From 44a368ef0e12cc7d1cf69c842e7e4c0e5c751216 Mon Sep 17 00:00:00 2001
From: sfan5 <sfan5@live.de>
Date: Sun, 25 Feb 2024 22:01:20 +0100
Subject: [PATCH] Migrate public headers to `#pragma once`

---
 include/CMeshBuffer.h                   | 7 +------
 include/EAttributes.h                   | 5 +----
 include/ECullingTypes.h                 | 7 +------
 include/EDebugSceneTypes.h              | 7 +------
 include/EDeviceTypes.h                  | 6 +-----
 include/EDriverFeatures.h               | 7 +------
 include/EDriverTypes.h                  | 6 +-----
 include/EFocusFlags.h                   | 6 +-----
 include/EGUIAlignment.h                 | 5 +----
 include/EGUIElementTypes.h              | 9 +--------
 include/EHardwareBufferFlags.h          | 6 +-----
 include/EMaterialProps.h                | 7 +------
 include/EMaterialTypes.h                | 7 +------
 include/EMeshWriterEnums.h              | 7 +------
 include/EPrimitiveTypes.h               | 6 +-----
 include/EReadFileType.h                 | 6 +-----
 include/ESceneNodeTypes.h               | 7 +------
 include/EShaderTypes.h                  | 6 +-----
 include/EVertexAttributes.h             | 5 +----
 include/IAnimatedMesh.h                 | 6 +-----
 include/IAnimatedMeshSceneNode.h        | 6 +-----
 include/IAttributes.h                   | 5 +----
 include/IBillboardSceneNode.h           | 7 +------
 include/IBoneSceneNode.h                | 6 +-----
 include/ICameraSceneNode.h              | 6 +-----
 include/ICursorControl.h                | 6 +-----
 include/IDummyTransformationSceneNode.h | 7 +------
 include/IEventReceiver.h                | 6 +-----
 include/IFileArchive.h                  | 6 +-----
 include/IFileList.h                     | 7 +------
 include/IFileSystem.h                   | 6 +-----
 include/IGPUProgrammingServices.h       | 6 +-----
 include/IGUIButton.h                    | 6 +-----
 include/IGUICheckBox.h                  | 6 +-----
 include/IGUIComboBox.h                  | 6 +-----
 include/IGUIEditBox.h                   | 6 +-----
 include/IGUIElement.h                   | 6 +-----
 include/IGUIEnvironment.h               | 6 +-----
 include/IGUIFileOpenDialog.h            | 6 +-----
 include/IGUIFont.h                      | 6 +-----
 include/IGUIFontBitmap.h                | 6 +-----
 include/IGUIImage.h                     | 5 +----
 include/IGUIImageList.h                 | 6 +-----
 include/IGUIListBox.h                   | 6 +-----
 include/IGUIScrollBar.h                 | 6 +-----
 include/IGUISkin.h                      | 6 +-----
 include/IGUISpriteBank.h                | 6 +-----
 include/IGUIStaticText.h                | 6 +-----
 include/IGUITabControl.h                | 6 +-----
 include/IGUIToolbar.h                   | 6 +-----
 include/IImage.h                        | 6 +-----
 include/IImageLoader.h                  | 6 +-----
 include/IImageWriter.h                  | 6 +-----
 include/IIndexBuffer.h                  | 6 +-----
 include/ILogger.h                       | 6 +-----
 include/IMaterialRenderer.h             | 6 +-----
 include/IMaterialRendererServices.h     | 6 +-----
 include/IMemoryReadFile.h               | 6 +-----
 include/IMesh.h                         | 6 +-----
 include/IMeshBuffer.h                   | 5 +----
 include/IMeshCache.h                    | 6 +-----
 include/IMeshLoader.h                   | 5 +----
 include/IMeshManipulator.h              | 6 +-----
 include/IMeshSceneNode.h                | 7 +------
 include/IOSOperator.h                   | 5 +----
 include/IReadFile.h                     | 6 +-----
 include/IReferenceCounted.h             | 6 +-----
 include/IRenderTarget.h                 | 5 +----
 include/ISceneCollisionManager.h        | 5 +----
 include/ISceneManager.h                 | 6 +-----
 include/ISceneNode.h                    | 6 +-----
 include/IShaderConstantSetCallBack.h    | 6 +-----
 include/ISkinnedMesh.h                  | 6 +-----
 include/ITexture.h                      | 6 +-----
 include/ITimer.h                        | 5 +----
 include/IVertexBuffer.h                 | 6 +-----
 include/IWriteFile.h                    | 6 +-----
 include/IrrlichtDevice.h                | 6 +-----
 include/S3DVertex.h                     | 6 +-----
 include/SAnimatedMesh.h                 | 6 +-----
 include/SColor.h                        | 5 +----
 include/SExposedVideoData.h             | 7 +------
 include/SIrrCreationParameters.h        | 6 +-----
 include/SMaterial.h                     | 5 +----
 include/SMaterialLayer.h                | 5 +----
 include/SMesh.h                         | 6 +-----
 include/SOverrideMaterial.h             | 6 +-----
 include/SSkinMeshBuffer.h               | 6 +-----
 include/SVertexIndex.h                  | 6 +-----
 include/SVertexManipulator.h            | 6 +-----
 include/SViewFrustum.h                  | 6 +-----
 include/SceneParameters.h               | 6 +-----
 include/exampleHelper.h                 | 5 +----
 include/fast_atof.h                     | 6 +-----
 include/irrlicht.h                      | 6 +-----
 95 files changed, 95 insertions(+), 476 deletions(-)

diff --git a/include/CMeshBuffer.h b/include/CMeshBuffer.h
index 49573982..9004af71 100644
--- a/include/CMeshBuffer.h
+++ b/include/CMeshBuffer.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __T_MESH_BUFFER_H_INCLUDED__
-#define __T_MESH_BUFFER_H_INCLUDED__
+#pragma once
 
 #include "irrArray.h"
 #include "IMeshBuffer.h"
@@ -293,7 +292,3 @@ namespace scene
 	typedef CMeshBuffer<video::S3DVertexTangents> SMeshBufferTangents;
 } // end namespace scene
 } // end namespace irr
-
-#endif
-
-
diff --git a/include/EAttributes.h b/include/EAttributes.h
index a96141a1..54954ca4 100644
--- a/include/EAttributes.h
+++ b/include/EAttributes.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __E_ATTRIBUTES_H_INCLUDED__
-#define __E_ATTRIBUTES_H_INCLUDED__
+#pragma once
 
 namespace irr
 {
@@ -31,5 +30,3 @@ enum E_ATTRIBUTE_TYPE
 
 } // end namespace io
 } // end namespace irr
-
-#endif
diff --git a/include/ECullingTypes.h b/include/ECullingTypes.h
index 50a46bc9..e8d2b069 100644
--- a/include/ECullingTypes.h
+++ b/include/ECullingTypes.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __E_CULLING_TYPES_H_INCLUDED__
-#define __E_CULLING_TYPES_H_INCLUDED__
+#pragma once
 
 #include "irrTypes.h"
 
@@ -35,7 +34,3 @@ namespace scene
 
 } // end namespace scene
 } // end namespace irr
-
-
-#endif // __E_CULLING_TYPES_H_INCLUDED__
-
diff --git a/include/EDebugSceneTypes.h b/include/EDebugSceneTypes.h
index 86e52350..67721b8e 100644
--- a/include/EDebugSceneTypes.h
+++ b/include/EDebugSceneTypes.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __E_DEBUG_SCENE_TYPES_H_INCLUDED__
-#define __E_DEBUG_SCENE_TYPES_H_INCLUDED__
+#pragma once
 
 namespace irr
 {
@@ -41,7 +40,3 @@ namespace scene
 
 } // end namespace scene
 } // end namespace irr
-
-
-#endif // __E_DEBUG_SCENE_TYPES_H_INCLUDED__
-
diff --git a/include/EDeviceTypes.h b/include/EDeviceTypes.h
index 43f0c588..617168ca 100644
--- a/include/EDeviceTypes.h
+++ b/include/EDeviceTypes.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __E_DEVICE_TYPES_H_INCLUDED__
-#define __E_DEVICE_TYPES_H_INCLUDED__
+#pragma once
 
 namespace irr
 {
@@ -45,6 +44,3 @@ namespace irr
 	};
 
 } // end namespace irr
-
-#endif // __E_DEVICE_TYPES_H_INCLUDED__
-
diff --git a/include/EDriverFeatures.h b/include/EDriverFeatures.h
index d9e70df0..2a2ef5b0 100644
--- a/include/EDriverFeatures.h
+++ b/include/EDriverFeatures.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __E_DRIVER_FEATURES_H_INCLUDED__
-#define __E_DRIVER_FEATURES_H_INCLUDED__
+#pragma once
 
 namespace irr
 {
@@ -136,7 +135,3 @@ namespace video
 
 } // end namespace video
 } // end namespace irr
-
-
-#endif
-
diff --git a/include/EDriverTypes.h b/include/EDriverTypes.h
index c6e3bcc4..f41e42d6 100644
--- a/include/EDriverTypes.h
+++ b/include/EDriverTypes.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __E_DRIVER_TYPES_H_INCLUDED__
-#define __E_DRIVER_TYPES_H_INCLUDED__
+#pragma once
 
 #include "irrTypes.h"
 
@@ -43,6 +42,3 @@ namespace video
 
 } // end namespace video
 } // end namespace irr
-
-
-#endif
diff --git a/include/EFocusFlags.h b/include/EFocusFlags.h
index 7788844b..2c229472 100644
--- a/include/EFocusFlags.h
+++ b/include/EFocusFlags.h
@@ -1,8 +1,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef E_FOCUS_FLAGS_H_INCLUDED__
-#define E_FOCUS_FLAGS_H_INCLUDED__
+#pragma once
 
 namespace irr
 {
@@ -33,6 +32,3 @@ enum EFOCUS_FLAG
 
 } // namespace gui
 } // namespace irr
-
-#endif
-
diff --git a/include/EGUIAlignment.h b/include/EGUIAlignment.h
index fa59ad6d..4c3c44a0 100644
--- a/include/EGUIAlignment.h
+++ b/include/EGUIAlignment.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __E_GUI_ALIGNMENT_H_INCLUDED__
-#define __E_GUI_ALIGNMENT_H_INCLUDED__
+#pragma once
 
 #include "irrTypes.h"
 
@@ -35,5 +34,3 @@ const c8* const GUIAlignmentNames[] =
 
 } // namespace gui
 } // namespace irr
-
-#endif // __E_GUI_ALIGNMENT_H_INCLUDED__
diff --git a/include/EGUIElementTypes.h b/include/EGUIElementTypes.h
index 395ef602..aea49f47 100644
--- a/include/EGUIElementTypes.h
+++ b/include/EGUIElementTypes.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __E_GUI_ELEMENT_TYPES_H_INCLUDED__
-#define __E_GUI_ELEMENT_TYPES_H_INCLUDED__
+#pragma once
 
 #include "irrTypes.h"
 
@@ -133,9 +132,3 @@ const c8* const GUIElementTypeNames[] =
 
 } // end namespace gui
 } // end namespace irr
-
-#endif
-
-
-
-
diff --git a/include/EHardwareBufferFlags.h b/include/EHardwareBufferFlags.h
index 27d56104..e50d2cff 100644
--- a/include/EHardwareBufferFlags.h
+++ b/include/EHardwareBufferFlags.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __E_HARDWARE_BUFFER_FLAGS_INCLUDED__
-#define __E_HARDWARE_BUFFER_FLAGS_INCLUDED__
+#pragma once
 
 namespace irr
 {
@@ -39,6 +38,3 @@ namespace scene
 
 } // end namespace scene
 } // end namespace irr
-
-#endif
-
diff --git a/include/EMaterialProps.h b/include/EMaterialProps.h
index 6b68dc87..975cd604 100644
--- a/include/EMaterialProps.h
+++ b/include/EMaterialProps.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __E_MATERIAL_PROPS_H_INCLUDED__
-#define __E_MATERIAL_PROPS_H_INCLUDED__
+#pragma once
 
 namespace irr
 {
@@ -81,7 +80,3 @@ namespace video
 
 } // end namespace video
 } // end namespace irr
-
-
-#endif // __E_MATERIAL_PROPS_H_INCLUDED__
-
diff --git a/include/EMaterialTypes.h b/include/EMaterialTypes.h
index 90554917..7bfe3dc2 100644
--- a/include/EMaterialTypes.h
+++ b/include/EMaterialTypes.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __E_MATERIAL_TYPES_H_INCLUDED__
-#define __E_MATERIAL_TYPES_H_INCLUDED__
+#pragma once
 
 #include "irrTypes.h"
 
@@ -74,7 +73,3 @@ namespace video
 
 } // end namespace video
 } // end namespace irr
-
-
-#endif // __E_MATERIAL_TYPES_H_INCLUDED__
-
diff --git a/include/EMeshWriterEnums.h b/include/EMeshWriterEnums.h
index f3e2649f..d06e3416 100644
--- a/include/EMeshWriterEnums.h
+++ b/include/EMeshWriterEnums.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __E_MESH_WRITER_ENUMS_H_INCLUDED__
-#define __E_MESH_WRITER_ENUMS_H_INCLUDED__
+#pragma once
 
 #include "irrTypes.h"
 
@@ -59,7 +58,3 @@ namespace scene
 
 } // end namespace scene
 } // end namespace irr
-
-
-#endif // __E_MESH_WRITER_ENUMS_H_INCLUDED__
-
diff --git a/include/EPrimitiveTypes.h b/include/EPrimitiveTypes.h
index 870bbf98..c2830d07 100644
--- a/include/EPrimitiveTypes.h
+++ b/include/EPrimitiveTypes.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __E_PRIMITIVE_TYPES_H_INCLUDED__
-#define __E_PRIMITIVE_TYPES_H_INCLUDED__
+#pragma once
 
 namespace irr
 {
@@ -42,6 +41,3 @@ namespace scene
 
 } // end namespace scene
 } // end namespace irr
-
-#endif
-
diff --git a/include/EReadFileType.h b/include/EReadFileType.h
index 2a7fd0e5..0e00eaf4 100644
--- a/include/EReadFileType.h
+++ b/include/EReadFileType.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __E_READ_FILE_TYPES_H_INCLUDED__
-#define __E_READ_FILE_TYPES_H_INCLUDED__
+#pragma once
 
 #include "irrTypes.h"
 
@@ -29,6 +28,3 @@ namespace io
 	};
 } // end namespace io
 } // end namespace irr
-
-
-#endif
diff --git a/include/ESceneNodeTypes.h b/include/ESceneNodeTypes.h
index 6bf857f2..e1e6c76e 100644
--- a/include/ESceneNodeTypes.h
+++ b/include/ESceneNodeTypes.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __E_SCENE_NODE_TYPES_H_INCLUDED__
-#define __E_SCENE_NODE_TYPES_H_INCLUDED__
+#pragma once
 
 #include "irrTypes.h"
 
@@ -50,7 +49,3 @@ namespace scene
 
 } // end namespace scene
 } // end namespace irr
-
-
-#endif
-
diff --git a/include/EShaderTypes.h b/include/EShaderTypes.h
index 691930c9..f5f87a7a 100644
--- a/include/EShaderTypes.h
+++ b/include/EShaderTypes.h
@@ -1,5 +1,4 @@
-#ifndef __E_SHADER_TYPES_H_INCLUDED__
-#define __E_SHADER_TYPES_H_INCLUDED__
+#pragma once
 
 #include "irrTypes.h"
 
@@ -85,6 +84,3 @@ const c8* const GEOMETRY_SHADER_TYPE_NAMES[] = {
 
 } // end namespace video
 } // end namespace irr
-
-#endif // __E_SHADER_TYPES_H_INCLUDED__
-
diff --git a/include/EVertexAttributes.h b/include/EVertexAttributes.h
index d7dce51d..67461c4a 100644
--- a/include/EVertexAttributes.h
+++ b/include/EVertexAttributes.h
@@ -1,5 +1,4 @@
-#ifndef __E_VERTEX_ATTRIBUTES_H_INCLUDED__
-#define __E_VERTEX_ATTRIBUTES_H_INCLUDED__
+#pragma once
 
 namespace irr
 {
@@ -34,5 +33,3 @@ const char* const sBuiltInVertexAttributeNames[] =
 
 } // end namespace video
 } // end namespace irr
-
-#endif //__E_VERTEX_ATTRIBUTES_H_INCLUDED__
\ No newline at end of file
diff --git a/include/IAnimatedMesh.h b/include/IAnimatedMesh.h
index 228a4c15..f5ad6fe3 100644
--- a/include/IAnimatedMesh.h
+++ b/include/IAnimatedMesh.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_ANIMATED_MESH_H_INCLUDED__
-#define __I_ANIMATED_MESH_H_INCLUDED__
+#pragma once
 
 #include "aabbox3d.h"
 #include "IMesh.h"
@@ -69,6 +68,3 @@ namespace scene
 
 } // end namespace scene
 } // end namespace irr
-
-#endif
-
diff --git a/include/IAnimatedMeshSceneNode.h b/include/IAnimatedMeshSceneNode.h
index 4ec90d1f..c15caabf 100644
--- a/include/IAnimatedMeshSceneNode.h
+++ b/include/IAnimatedMeshSceneNode.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_ANIMATED_MESH_SCENE_NODE_H_INCLUDED__
-#define __I_ANIMATED_MESH_SCENE_NODE_H_INCLUDED__
+#pragma once
 
 #include "ISceneNode.h"
 #include "IBoneSceneNode.h"
@@ -172,6 +171,3 @@ namespace scene
 
 } // end namespace scene
 } // end namespace irr
-
-#endif
-
diff --git a/include/IAttributes.h b/include/IAttributes.h
index b96c1214..5b8b1ba9 100644
--- a/include/IAttributes.h
+++ b/include/IAttributes.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_ATTRIBUTES_H_INCLUDED__
-#define __I_ATTRIBUTES_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 #include "EAttributes.h"
@@ -128,5 +127,3 @@ public:
 
 } // end namespace io
 } // end namespace irr
-
-#endif
diff --git a/include/IBillboardSceneNode.h b/include/IBillboardSceneNode.h
index 66082b49..a05c949a 100644
--- a/include/IBillboardSceneNode.h
+++ b/include/IBillboardSceneNode.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_BILLBOARD_SCENE_NODE_H_INCLUDED__
-#define __I_BILLBOARD_SCENE_NODE_H_INCLUDED__
+#pragma once
 
 #include "ISceneNode.h"
 
@@ -90,7 +89,3 @@ public:
 
 } // end namespace scene
 } // end namespace irr
-
-
-#endif
-
diff --git a/include/IBoneSceneNode.h b/include/IBoneSceneNode.h
index 741aca26..f57b902c 100644
--- a/include/IBoneSceneNode.h
+++ b/include/IBoneSceneNode.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_BONE_SCENE_NODE_H_INCLUDED__
-#define __I_BONE_SCENE_NODE_H_INCLUDED__
+#pragma once
 
 #include "ISceneNode.h"
 
@@ -99,6 +98,3 @@ namespace scene
 
 } // end namespace scene
 } // end namespace irr
-
-#endif
-
diff --git a/include/ICameraSceneNode.h b/include/ICameraSceneNode.h
index 35f725da..acc7e5d2 100644
--- a/include/ICameraSceneNode.h
+++ b/include/ICameraSceneNode.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_CAMERA_SCENE_NODE_H_INCLUDED__
-#define __I_CAMERA_SCENE_NODE_H_INCLUDED__
+#pragma once
 
 #include "ISceneNode.h"
 #include "IEventReceiver.h"
@@ -184,6 +183,3 @@ namespace scene
 
 } // end namespace scene
 } // end namespace irr
-
-#endif
-
diff --git a/include/ICursorControl.h b/include/ICursorControl.h
index 27d4809c..2b7a4dca 100644
--- a/include/ICursorControl.h
+++ b/include/ICursorControl.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_CURSOR_CONTROL_H_INCLUDED__
-#define __I_CURSOR_CONTROL_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 #include "position2d.h"
@@ -197,6 +196,3 @@ namespace gui
 
 } // end namespace gui
 } // end namespace irr
-
-#endif
-
diff --git a/include/IDummyTransformationSceneNode.h b/include/IDummyTransformationSceneNode.h
index d5e7f005..fb823eae 100644
--- a/include/IDummyTransformationSceneNode.h
+++ b/include/IDummyTransformationSceneNode.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_DUMMY_TRANSFORMATION_SCENE_NODE_H_INCLUDED__
-#define __I_DUMMY_TRANSFORMATION_SCENE_NODE_H_INCLUDED__
+#pragma once
 
 #include "ISceneNode.h"
 
@@ -36,7 +35,3 @@ public:
 
 } // end namespace scene
 } // end namespace irr
-
-
-#endif
-
diff --git a/include/IEventReceiver.h b/include/IEventReceiver.h
index c56add96..8cea6e38 100644
--- a/include/IEventReceiver.h
+++ b/include/IEventReceiver.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_EVENT_RECEIVER_H_INCLUDED__
-#define __I_EVENT_RECEIVER_H_INCLUDED__
+#pragma once
 
 #include "ILogger.h"
 #include "Keycodes.h"
@@ -637,6 +636,3 @@ struct SJoystickInfo
 
 
 } // end namespace irr
-
-#endif
-
diff --git a/include/IFileArchive.h b/include/IFileArchive.h
index 8952aca7..2294a675 100644
--- a/include/IFileArchive.h
+++ b/include/IFileArchive.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_FILE_ARCHIVE_H_INCLUDED__
-#define __I_FILE_ARCHIVE_H_INCLUDED__
+#pragma once
 
 #include "IReadFile.h"
 #include "IFileList.h"
@@ -143,6 +142,3 @@ public:
 
 } // end namespace io
 } // end namespace irr
-
-#endif
-
diff --git a/include/IFileList.h b/include/IFileList.h
index dd40bd31..cdef3e67 100644
--- a/include/IFileList.h
+++ b/include/IFileList.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_FILE_LIST_H_INCLUDED__
-#define __I_FILE_LIST_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 #include "path.h"
@@ -88,7 +87,3 @@ public:
 
 } // end namespace irr
 } // end namespace io
-
-
-#endif
-
diff --git a/include/IFileSystem.h b/include/IFileSystem.h
index 47edadec..635c7975 100644
--- a/include/IFileSystem.h
+++ b/include/IFileSystem.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_FILE_SYSTEM_H_INCLUDED__
-#define __I_FILE_SYSTEM_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 #include "IFileArchive.h"
@@ -268,6 +267,3 @@ public:
 
 } // end namespace io
 } // end namespace irr
-
-#endif
-
diff --git a/include/IGPUProgrammingServices.h b/include/IGPUProgrammingServices.h
index f172314f..470e26af 100644
--- a/include/IGPUProgrammingServices.h
+++ b/include/IGPUProgrammingServices.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_GPU_PROGRAMMING_SERVICES_H_INCLUDED__
-#define __I_GPU_PROGRAMMING_SERVICES_H_INCLUDED__
+#pragma once
 
 #include "EShaderTypes.h"
 #include "EMaterialTypes.h"
@@ -370,6 +369,3 @@ public:
 
 } // end namespace video
 } // end namespace irr
-
-#endif
-
diff --git a/include/IGUIButton.h b/include/IGUIButton.h
index d498c570..a146e728 100644
--- a/include/IGUIButton.h
+++ b/include/IGUIButton.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_GUI_BUTTON_H_INCLUDED__
-#define __I_GUI_BUTTON_H_INCLUDED__
+#pragma once
 
 #include "IGUIElement.h"
 
@@ -263,6 +262,3 @@ namespace gui
 
 } // end namespace gui
 } // end namespace irr
-
-#endif
-
diff --git a/include/IGUICheckBox.h b/include/IGUICheckBox.h
index bf9099d1..d3a0f3a2 100644
--- a/include/IGUICheckBox.h
+++ b/include/IGUICheckBox.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_GUI_CHECKBOX_H_INCLUDED__
-#define __I_GUI_CHECKBOX_H_INCLUDED__
+#pragma once
 
 #include "IGUIElement.h"
 
@@ -48,6 +47,3 @@ namespace gui
 
 } // end namespace gui
 } // end namespace irr
-
-#endif
-
diff --git a/include/IGUIComboBox.h b/include/IGUIComboBox.h
index 3bc0acf3..e63fee82 100644
--- a/include/IGUIComboBox.h
+++ b/include/IGUIComboBox.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_GUI_COMBO_BOX_H_INCLUDED__
-#define __I_GUI_COMBO_BOX_H_INCLUDED__
+#pragma once
 
 #include "IGUIElement.h"
 
@@ -73,6 +72,3 @@ namespace gui
 
 } // end namespace gui
 } // end namespace irr
-
-#endif
-
diff --git a/include/IGUIEditBox.h b/include/IGUIEditBox.h
index 9be55630..67ca5a1e 100644
--- a/include/IGUIEditBox.h
+++ b/include/IGUIEditBox.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_GUI_EDIT_BOX_H_INCLUDED__
-#define __I_GUI_EDIT_BOX_H_INCLUDED__
+#pragma once
 
 #include "IGUIElement.h"
 #include "SColor.h"
@@ -152,6 +151,3 @@ namespace gui
 
 } // end namespace gui
 } // end namespace irr
-
-#endif
-
diff --git a/include/IGUIElement.h b/include/IGUIElement.h
index b8c9c180..552ccf15 100644
--- a/include/IGUIElement.h
+++ b/include/IGUIElement.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_GUI_ELEMENT_H_INCLUDED__
-#define __I_GUI_ELEMENT_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 #include "rect.h"
@@ -1031,6 +1030,3 @@ protected:
 
 } // end namespace gui
 } // end namespace irr
-
-#endif
-
diff --git a/include/IGUIEnvironment.h b/include/IGUIEnvironment.h
index 653a199d..833d00ff 100644
--- a/include/IGUIEnvironment.h
+++ b/include/IGUIEnvironment.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_GUI_ENVIRONMENT_H_INCLUDED__
-#define __I_GUI_ENVIRONMENT_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 #include "IGUISkin.h"
@@ -416,6 +415,3 @@ public:
 
 } // end namespace gui
 } // end namespace irr
-
-#endif
-
diff --git a/include/IGUIFileOpenDialog.h b/include/IGUIFileOpenDialog.h
index d018120f..ec8e1a6c 100644
--- a/include/IGUIFileOpenDialog.h
+++ b/include/IGUIFileOpenDialog.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_GUI_FILE_OPEN_DIALOG_H_INCLUDED__
-#define __I_GUI_FILE_OPEN_DIALOG_H_INCLUDED__
+#pragma once
 
 #include "IGUIElement.h"
 #include "path.h"
@@ -45,6 +44,3 @@ namespace gui
 
 } // end namespace gui
 } // end namespace irr
-
-#endif
-
diff --git a/include/IGUIFont.h b/include/IGUIFont.h
index 2e97c821..49641ec3 100644
--- a/include/IGUIFont.h
+++ b/include/IGUIFont.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_GUI_FONT_H_INCLUDED__
-#define __I_GUI_FONT_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 #include "SColor.h"
@@ -99,6 +98,3 @@ public:
 
 } // end namespace gui
 } // end namespace irr
-
-#endif
-
diff --git a/include/IGUIFontBitmap.h b/include/IGUIFontBitmap.h
index 4e84ca06..029ca11d 100644
--- a/include/IGUIFontBitmap.h
+++ b/include/IGUIFontBitmap.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_GUI_FONT_BITMAP_H_INCLUDED__
-#define __I_GUI_FONT_BITMAP_H_INCLUDED__
+#pragma once
 
 #include "IGUIFont.h"
 
@@ -41,6 +40,3 @@ public:
 
 } // end namespace gui
 } // end namespace irr
-
-#endif
-
diff --git a/include/IGUIImage.h b/include/IGUIImage.h
index d9319cae..77aca5c4 100644
--- a/include/IGUIImage.h
+++ b/include/IGUIImage.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_GUI_IMAGE_H_INCLUDED__
-#define __I_GUI_IMAGE_H_INCLUDED__
+#pragma once
 
 #include "IGUIElement.h"
 
@@ -83,5 +82,3 @@ namespace gui
 
 } // end namespace gui
 } // end namespace irr
-
-#endif
diff --git a/include/IGUIImageList.h b/include/IGUIImageList.h
index a283824d..fd34296e 100644
--- a/include/IGUIImageList.h
+++ b/include/IGUIImageList.h
@@ -1,8 +1,7 @@
 // This file is part of the "Irrlicht Engine".
 // written by Reinhard Ostermeier, reinhard@nospam.r-ostermeier.de
 
-#ifndef __I_GUI_IMAGE_LIST_H_INCLUDED__
-#define __I_GUI_IMAGE_LIST_H_INCLUDED__
+#pragma once
 
 #include "IGUIElement.h"
 #include "rect.h"
@@ -40,6 +39,3 @@ public:
 
 } // end namespace gui
 } // end namespace irr
-
-#endif
-
diff --git a/include/IGUIListBox.h b/include/IGUIListBox.h
index 8c7749d7..fe16f088 100644
--- a/include/IGUIListBox.h
+++ b/include/IGUIListBox.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_GUI_LIST_BOX_H_INCLUDED__
-#define __I_GUI_LIST_BOX_H_INCLUDED__
+#pragma once
 
 #include "IGUIElement.h"
 #include "SColor.h"
@@ -137,6 +136,3 @@ namespace gui
 
 } // end namespace gui
 } // end namespace irr
-
-#endif
-
diff --git a/include/IGUIScrollBar.h b/include/IGUIScrollBar.h
index 4064ef93..c8855625 100644
--- a/include/IGUIScrollBar.h
+++ b/include/IGUIScrollBar.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_GUI_SCROLL_BAR_H_INCLUDED__
-#define __I_GUI_SCROLL_BAR_H_INCLUDED__
+#pragma once
 
 #include "IGUIElement.h"
 
@@ -60,6 +59,3 @@ namespace gui
 
 } // end namespace gui
 } // end namespace irr
-
-#endif
-
diff --git a/include/IGUISkin.h b/include/IGUISkin.h
index 0c5200ab..595f4251 100644
--- a/include/IGUISkin.h
+++ b/include/IGUISkin.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_GUI_SKIN_H_INCLUDED__
-#define __I_GUI_SKIN_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 #include "EGUIAlignment.h"
@@ -575,6 +574,3 @@ namespace gui
 
 } // end namespace gui
 } // end namespace irr
-
-#endif
-
diff --git a/include/IGUISpriteBank.h b/include/IGUISpriteBank.h
index 48d05933..0242e1b1 100644
--- a/include/IGUISpriteBank.h
+++ b/include/IGUISpriteBank.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_GUI_SPRITE_BANK_H_INCLUDED__
-#define __I_GUI_SPRITE_BANK_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 #include "irrArray.h"
@@ -137,6 +136,3 @@ public:
 
 } // end namespace gui
 } // end namespace irr
-
-#endif // __I_GUI_SPRITE_BANK_H_INCLUDED__
-
diff --git a/include/IGUIStaticText.h b/include/IGUIStaticText.h
index 88b37957..be72171c 100644
--- a/include/IGUIStaticText.h
+++ b/include/IGUIStaticText.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_GUI_STATIC_TEXT_H_INCLUDED__
-#define __I_GUI_STATIC_TEXT_H_INCLUDED__
+#pragma once
 
 #include "IGUIElement.h"
 #include "SColor.h"
@@ -134,6 +133,3 @@ namespace gui
 
 } // end namespace gui
 } // end namespace irr
-
-#endif
-
diff --git a/include/IGUITabControl.h b/include/IGUITabControl.h
index 928bf82b..5b042d27 100644
--- a/include/IGUITabControl.h
+++ b/include/IGUITabControl.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_GUI_TAB_CONTROL_H_INCLUDED__
-#define __I_GUI_TAB_CONTROL_H_INCLUDED__
+#pragma once
 
 #include "IGUIElement.h"
 #include "SColor.h"
@@ -150,6 +149,3 @@ namespace gui
 
 } // end namespace gui
 } // end namespace irr
-
-#endif
-
diff --git a/include/IGUIToolbar.h b/include/IGUIToolbar.h
index 08519fcd..75736855 100644
--- a/include/IGUIToolbar.h
+++ b/include/IGUIToolbar.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_GUI_TOOL_BAR_H_INCLUDED__
-#define __I_GUI_TOOL_BAR_H_INCLUDED__
+#pragma once
 
 #include "IGUIElement.h"
 
@@ -35,6 +34,3 @@ namespace gui
 
 } // end namespace gui
 } // end namespace irr
-
-#endif
-
diff --git a/include/IImage.h b/include/IImage.h
index 738d1e02..7675959a 100644
--- a/include/IImage.h
+++ b/include/IImage.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_IMAGE_H_INCLUDED__
-#define __I_IMAGE_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 #include "position2d.h"
@@ -465,6 +464,3 @@ protected:
 
 } // end namespace video
 } // end namespace irr
-
-#endif
-
diff --git a/include/IImageLoader.h b/include/IImageLoader.h
index 5a7c3f8b..12623c69 100644
--- a/include/IImageLoader.h
+++ b/include/IImageLoader.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_SURFACE_LOADER_H_INCLUDED__
-#define __I_SURFACE_LOADER_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 #include "IImage.h"
@@ -50,6 +49,3 @@ public:
 
 } // end namespace video
 } // end namespace irr
-
-#endif
-
diff --git a/include/IImageWriter.h b/include/IImageWriter.h
index fd00793b..632d8b5d 100644
--- a/include/IImageWriter.h
+++ b/include/IImageWriter.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef _I_IMAGE_WRITER_H_INCLUDED__
-#define _I_IMAGE_WRITER_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 #include "irrString.h"
@@ -40,6 +39,3 @@ public:
 
 } // namespace video
 } // namespace irr
-
-#endif // _I_IMAGE_WRITER_H_INCLUDED__
-
diff --git a/include/IIndexBuffer.h b/include/IIndexBuffer.h
index 0fe0d62a..c1a35f52 100644
--- a/include/IIndexBuffer.h
+++ b/include/IIndexBuffer.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_INDEX_BUFFER_H_INCLUDED__
-#define __I_INDEX_BUFFER_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 #include "irrArray.h"
@@ -60,6 +59,3 @@ namespace scene
 
 } // end namespace scene
 } // end namespace irr
-
-#endif
-
diff --git a/include/ILogger.h b/include/ILogger.h
index 335c59b8..48dfc5f4 100644
--- a/include/ILogger.h
+++ b/include/ILogger.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_LOGGER_H_INCLUDED__
-#define __I_LOGGER_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 
@@ -76,6 +75,3 @@ public:
 };
 
 } // end namespace
-
-#endif
-
diff --git a/include/IMaterialRenderer.h b/include/IMaterialRenderer.h
index d325bb11..b959a493 100644
--- a/include/IMaterialRenderer.h
+++ b/include/IMaterialRenderer.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_MATERIAL_RENDERER_H_INCLUDED__
-#define __I_MATERIAL_RENDERER_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 #include "SMaterial.h"
@@ -102,6 +101,3 @@ public:
 
 } // end namespace video
 } // end namespace irr
-
-#endif
-
diff --git a/include/IMaterialRendererServices.h b/include/IMaterialRendererServices.h
index 94251f0f..2eb13a77 100644
--- a/include/IMaterialRendererServices.h
+++ b/include/IMaterialRendererServices.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_MATERIAL_RENDERER_SERVICES_H_INCLUDED__
-#define __I_MATERIAL_RENDERER_SERVICES_H_INCLUDED__
+#pragma once
 
 #include "SMaterial.h"
 #include "S3DVertex.h"
@@ -81,6 +80,3 @@ public:
 
 } // end namespace video
 } // end namespace irr
-
-#endif
-
diff --git a/include/IMemoryReadFile.h b/include/IMemoryReadFile.h
index 7589b9d0..7b18d53c 100644
--- a/include/IMemoryReadFile.h
+++ b/include/IMemoryReadFile.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_MEMORY_READ_FILE_H_INCLUDED__
-#define __I_MEMORY_READ_FILE_H_INCLUDED__
+#pragma once
 
 #include "IReadFile.h"
 
@@ -26,6 +25,3 @@ namespace io
 	};
 } // end namespace io
 } // end namespace irr
-
-#endif
-
diff --git a/include/IMesh.h b/include/IMesh.h
index b00f22f2..2884d74a 100644
--- a/include/IMesh.h
+++ b/include/IMesh.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_MESH_H_INCLUDED__
-#define __I_MESH_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 #include "SMaterial.h"
@@ -124,6 +123,3 @@ namespace scene
 
 } // end namespace scene
 } // end namespace irr
-
-#endif
-
diff --git a/include/IMeshBuffer.h b/include/IMeshBuffer.h
index a96b1a89..8b32ac12 100644
--- a/include/IMeshBuffer.h
+++ b/include/IMeshBuffer.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_MESH_BUFFER_H_INCLUDED__
-#define __I_MESH_BUFFER_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 #include "SMaterial.h"
@@ -176,5 +175,3 @@ namespace scene
 
 } // end namespace scene
 } // end namespace irr
-
-#endif
diff --git a/include/IMeshCache.h b/include/IMeshCache.h
index 506fc322..1c2782b8 100644
--- a/include/IMeshCache.h
+++ b/include/IMeshCache.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_MESH_CACHE_H_INCLUDED__
-#define __I_MESH_CACHE_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 #include "path.h"
@@ -132,6 +131,3 @@ namespace scene
 
 } // end namespace scene
 } // end namespace irr
-
-#endif
-
diff --git a/include/IMeshLoader.h b/include/IMeshLoader.h
index 6472ca8a..6162fb46 100644
--- a/include/IMeshLoader.h
+++ b/include/IMeshLoader.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_MESH_LOADER_H_INCLUDED__
-#define __I_MESH_LOADER_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 #include "path.h"
@@ -51,5 +50,3 @@ public:
 
 } // end namespace scene
 } // end namespace irr
-
-#endif
diff --git a/include/IMeshManipulator.h b/include/IMeshManipulator.h
index 517ac4fe..fe0d8e90 100644
--- a/include/IMeshManipulator.h
+++ b/include/IMeshManipulator.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_MESH_MANIPULATOR_H_INCLUDED__
-#define __I_MESH_MANIPULATOR_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 #include "vector3d.h"
@@ -182,6 +181,3 @@ protected:
 
 } // end namespace scene
 } // end namespace irr
-
-
-#endif
diff --git a/include/IMeshSceneNode.h b/include/IMeshSceneNode.h
index e842128a..f31b4238 100644
--- a/include/IMeshSceneNode.h
+++ b/include/IMeshSceneNode.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_MESH_SCENE_NODE_H_INCLUDED__
-#define __I_MESH_SCENE_NODE_H_INCLUDED__
+#pragma once
 
 #include "ISceneNode.h"
 
@@ -51,7 +50,3 @@ public:
 
 } // end namespace scene
 } // end namespace irr
-
-
-#endif
-
diff --git a/include/IOSOperator.h b/include/IOSOperator.h
index 05949e4d..9f7d09b5 100644
--- a/include/IOSOperator.h
+++ b/include/IOSOperator.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_OS_OPERATOR_H_INCLUDED__
-#define __I_OS_OPERATOR_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 #include "irrString.h"
@@ -45,5 +44,3 @@ public:
 };
 
 } // end namespace
-
-#endif
diff --git a/include/IReadFile.h b/include/IReadFile.h
index 5be0d061..3dab3b87 100644
--- a/include/IReadFile.h
+++ b/include/IReadFile.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_READ_FILE_H_INCLUDED__
-#define __I_READ_FILE_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 #include "coreutil.h"
@@ -56,6 +55,3 @@ namespace io
 
 } // end namespace io
 } // end namespace irr
-
-#endif
-
diff --git a/include/IReferenceCounted.h b/include/IReferenceCounted.h
index 0eb23a5c..3de94fa1 100644
--- a/include/IReferenceCounted.h
+++ b/include/IReferenceCounted.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_IREFERENCE_COUNTED_H_INCLUDED__
-#define __I_IREFERENCE_COUNTED_H_INCLUDED__
+#pragma once
 
 #include "irrTypes.h"
 
@@ -165,6 +164,3 @@ namespace irr
 	};
 
 } // end namespace irr
-
-#endif
-
diff --git a/include/IRenderTarget.h b/include/IRenderTarget.h
index 7320e2c4..c0fb1bbe 100644
--- a/include/IRenderTarget.h
+++ b/include/IRenderTarget.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_RENDER_TARGET_H_INCLUDED__
-#define __I_RENDER_TARGET_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 #include "EDriverTypes.h"
@@ -125,5 +124,3 @@ namespace video
 
 }
 }
-
-#endif
diff --git a/include/ISceneCollisionManager.h b/include/ISceneCollisionManager.h
index 601200b3..200e8c08 100644
--- a/include/ISceneCollisionManager.h
+++ b/include/ISceneCollisionManager.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_SCENE_COLLISION_MANAGER_H_INCLUDED__
-#define __I_SCENE_COLLISION_MANAGER_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 #include "position2d.h"
@@ -34,5 +33,3 @@ namespace scene
 
 } // end namespace scene
 } // end namespace irr
-
-#endif
diff --git a/include/ISceneManager.h b/include/ISceneManager.h
index 50869e38..26357fd8 100644
--- a/include/ISceneManager.h
+++ b/include/ISceneManager.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_SCENE_MANAGER_H_INCLUDED__
-#define __I_SCENE_MANAGER_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 #include "irrArray.h"
@@ -640,6 +639,3 @@ namespace scene
 
 } // end namespace scene
 } // end namespace irr
-
-#endif
-
diff --git a/include/ISceneNode.h b/include/ISceneNode.h
index ab1a0fce..9cc38f9d 100644
--- a/include/ISceneNode.h
+++ b/include/ISceneNode.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_SCENE_NODE_H_INCLUDED__
-#define __I_SCENE_NODE_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 #include "ESceneNodeTypes.h"
@@ -638,6 +637,3 @@ namespace scene
 
 } // end namespace scene
 } // end namespace irr
-
-#endif
-
diff --git a/include/IShaderConstantSetCallBack.h b/include/IShaderConstantSetCallBack.h
index f88393fb..1bc7e4ae 100644
--- a/include/IShaderConstantSetCallBack.h
+++ b/include/IShaderConstantSetCallBack.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_SHADER_CONSTANT_SET_CALLBACT_H_INCLUDED__
-#define __I_SHADER_CONSTANT_SET_CALLBACT_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 
@@ -80,6 +79,3 @@ public:
 
 } // end namespace video
 } // end namespace irr
-
-#endif
-
diff --git a/include/ISkinnedMesh.h b/include/ISkinnedMesh.h
index 77821855..a8bc2625 100644
--- a/include/ISkinnedMesh.h
+++ b/include/ISkinnedMesh.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_SKINNED_MESH_H_INCLUDED__
-#define __I_SKINNED_MESH_H_INCLUDED__
+#pragma once
 
 #include "irrArray.h"
 #include "IBoneSceneNode.h"
@@ -222,6 +221,3 @@ namespace scene
 
 } // end namespace scene
 } // end namespace irr
-
-#endif
-
diff --git a/include/ITexture.h b/include/ITexture.h
index baae29b6..8724e209 100644
--- a/include/ITexture.h
+++ b/include/ITexture.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_TEXTURE_H_INCLUDED__
-#define __I_TEXTURE_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 #include "IImage.h"
@@ -340,6 +339,3 @@ protected:
 
 } // end namespace video
 } // end namespace irr
-
-#endif
-
diff --git a/include/ITimer.h b/include/ITimer.h
index 2faee80f..22c79f60 100644
--- a/include/ITimer.h
+++ b/include/ITimer.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_TIMER_H_INCLUDED__
-#define __I_TIMER_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 
@@ -64,5 +63,3 @@ public:
 };
 
 } // end namespace irr
-
-#endif
diff --git a/include/IVertexBuffer.h b/include/IVertexBuffer.h
index 8f25a734..883cae58 100644
--- a/include/IVertexBuffer.h
+++ b/include/IVertexBuffer.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_VERTEX_BUFFER_H_INCLUDED__
-#define __I_VERTEX_BUFFER_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 #include "irrArray.h"
@@ -48,6 +47,3 @@ namespace scene
 
 } // end namespace scene
 } // end namespace irr
-
-#endif
-
diff --git a/include/IWriteFile.h b/include/IWriteFile.h
index eba505c0..c07c540a 100644
--- a/include/IWriteFile.h
+++ b/include/IWriteFile.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_WRITE_FILE_H_INCLUDED__
-#define __I_WRITE_FILE_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 #include "path.h"
@@ -46,6 +45,3 @@ namespace io
 
 } // end namespace io
 } // end namespace irr
-
-#endif
-
diff --git a/include/IrrlichtDevice.h b/include/IrrlichtDevice.h
index 048bc94b..bdaa102c 100644
--- a/include/IrrlichtDevice.h
+++ b/include/IrrlichtDevice.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_IRRLICHT_DEVICE_H_INCLUDED__
-#define __I_IRRLICHT_DEVICE_H_INCLUDED__
+#pragma once
 
 #include "IReferenceCounted.h"
 #include "dimension2d.h"
@@ -337,6 +336,3 @@ namespace irr
 	};
 
 } // end namespace irr
-
-#endif
-
diff --git a/include/S3DVertex.h b/include/S3DVertex.h
index f0ad1510..1b7ad966 100644
--- a/include/S3DVertex.h
+++ b/include/S3DVertex.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __S_3D_VERTEX_H_INCLUDED__
-#define __S_3D_VERTEX_H_INCLUDED__
+#pragma once
 
 #include "vector3d.h"
 #include "vector2d.h"
@@ -279,6 +278,3 @@ inline u32 getVertexPitchFromType(E_VERTEX_TYPE vertexType)
 
 } // end namespace video
 } // end namespace irr
-
-#endif
-
diff --git a/include/SAnimatedMesh.h b/include/SAnimatedMesh.h
index 5b5f9a43..5c5934dc 100644
--- a/include/SAnimatedMesh.h
+++ b/include/SAnimatedMesh.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __S_ANIMATED_MESH_H_INCLUDED__
-#define __S_ANIMATED_MESH_H_INCLUDED__
+#pragma once
 
 #include "IAnimatedMesh.h"
 #include "IMesh.h"
@@ -177,6 +176,3 @@ namespace scene
 
 } // end namespace scene
 } // end namespace irr
-
-#endif
-
diff --git a/include/SColor.h b/include/SColor.h
index 710421c9..bdb8f2c4 100644
--- a/include/SColor.h
+++ b/include/SColor.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __COLOR_H_INCLUDED__
-#define __COLOR_H_INCLUDED__
+#pragma once
 
 #include "irrTypes.h"
 #include "irrMath.h"
@@ -750,5 +749,3 @@ namespace video
 
 } // end namespace video
 } // end namespace irr
-
-#endif
diff --git a/include/SExposedVideoData.h b/include/SExposedVideoData.h
index 4aa22df8..f630dc91 100644
--- a/include/SExposedVideoData.h
+++ b/include/SExposedVideoData.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __S_EXPOSED_VIDEO_DATA_H_INCLUDED__
-#define __S_EXPOSED_VIDEO_DATA_H_INCLUDED__
+#pragma once
 
 namespace irr
 {
@@ -78,7 +77,3 @@ struct SExposedVideoData
 
 } // end namespace video
 } // end namespace irr
-
-
-#endif
-
diff --git a/include/SIrrCreationParameters.h b/include/SIrrCreationParameters.h
index 5e374597..61819cc1 100644
--- a/include/SIrrCreationParameters.h
+++ b/include/SIrrCreationParameters.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_IRRLICHT_CREATION_PARAMETERS_H_INCLUDED__
-#define __I_IRRLICHT_CREATION_PARAMETERS_H_INCLUDED__
+#pragma once
 
 #include "EDriverTypes.h"
 #include "EDeviceTypes.h"
@@ -291,6 +290,3 @@ namespace irr
 
 
 } // end namespace irr
-
-#endif
-
diff --git a/include/SMaterial.h b/include/SMaterial.h
index 8d29ef68..05024c0f 100644
--- a/include/SMaterial.h
+++ b/include/SMaterial.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __S_MATERIAL_H_INCLUDED__
-#define __S_MATERIAL_H_INCLUDED__
+#pragma once
 
 #include "SColor.h"
 #include "matrix4.h"
@@ -571,5 +570,3 @@ namespace video
 	IRRLICHT_API extern SMaterial IdentityMaterial;
 } // end namespace video
 } // end namespace irr
-
-#endif
diff --git a/include/SMaterialLayer.h b/include/SMaterialLayer.h
index 47a29976..33e45448 100644
--- a/include/SMaterialLayer.h
+++ b/include/SMaterialLayer.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __S_MATERIAL_LAYER_H_INCLUDED__
-#define __S_MATERIAL_LAYER_H_INCLUDED__
+#pragma once
 
 #include "matrix4.h"
 
@@ -243,5 +242,3 @@ namespace video
 
 } // end namespace video
 } // end namespace irr
-
-#endif // __S_MATERIAL_LAYER_H_INCLUDED__
diff --git a/include/SMesh.h b/include/SMesh.h
index 94e4f207..314882bf 100644
--- a/include/SMesh.h
+++ b/include/SMesh.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __S_MESH_H_INCLUDED__
-#define __S_MESH_H_INCLUDED__
+#pragma once
 
 #include "IMesh.h"
 #include "IMeshBuffer.h"
@@ -141,6 +140,3 @@ namespace scene
 
 } // end namespace scene
 } // end namespace irr
-
-#endif
-
diff --git a/include/SOverrideMaterial.h b/include/SOverrideMaterial.h
index dc03de0b..6b95c66a 100644
--- a/include/SOverrideMaterial.h
+++ b/include/SOverrideMaterial.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __S_OVERRIDE_MATERIAL_H_INCLUDED__
-#define __S_OVERRIDE_MATERIAL_H_INCLUDED__
+#pragma once
 
 #include "SMaterial.h"
 
@@ -175,6 +174,3 @@ namespace video
 
 } // end namespace video
 } // end namespace irr
-
-#endif // __S_OVERRIDE_MATERIAL_H_INCLUDED__
-
diff --git a/include/SSkinMeshBuffer.h b/include/SSkinMeshBuffer.h
index dbc54611..f31115f5 100644
--- a/include/SSkinMeshBuffer.h
+++ b/include/SSkinMeshBuffer.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_SKIN_MESH_BUFFER_H_INCLUDED__
-#define __I_SKIN_MESH_BUFFER_H_INCLUDED__
+#pragma once
 
 #include "IMeshBuffer.h"
 #include "S3DVertex.h"
@@ -424,6 +423,3 @@ struct SSkinMeshBuffer : public IMeshBuffer
 
 } // end namespace scene
 } // end namespace irr
-
-#endif
-
diff --git a/include/SVertexIndex.h b/include/SVertexIndex.h
index 2a53932e..10150093 100644
--- a/include/SVertexIndex.h
+++ b/include/SVertexIndex.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __S_VERTEX_INDEX_H_INCLUDED__
-#define __S_VERTEX_INDEX_H_INCLUDED__
+#pragma once
 
 #include "irrTypes.h"
 
@@ -21,6 +20,3 @@ enum E_INDEX_TYPE
 
 } // end namespace video
 } // end namespace irr
-
-#endif
-
diff --git a/include/SVertexManipulator.h b/include/SVertexManipulator.h
index 36a61143..93645ead 100644
--- a/include/SVertexManipulator.h
+++ b/include/SVertexManipulator.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __S_VERTEX_MANIPULATOR_H_INCLUDED__
-#define __S_VERTEX_MANIPULATOR_H_INCLUDED__
+#pragma once
 
 #include "matrix4.h"
 #include "S3DVertex.h"
@@ -41,6 +40,3 @@ namespace scene
 
 } // end namespace scene
 } // end namespace irr
-
-
-#endif
diff --git a/include/SViewFrustum.h b/include/SViewFrustum.h
index c75ebb98..15154482 100644
--- a/include/SViewFrustum.h
+++ b/include/SViewFrustum.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __S_VIEW_FRUSTUM_H_INCLUDED__
-#define __S_VIEW_FRUSTUM_H_INCLUDED__
+#pragma once
 
 #include "plane3d.h"
 #include "vector3d.h"
@@ -457,6 +456,3 @@ namespace scene
 
 } // end namespace scene
 } // end namespace irr
-
-#endif
-
diff --git a/include/SceneParameters.h b/include/SceneParameters.h
index b5c5fc1c..73921fe8 100644
--- a/include/SceneParameters.h
+++ b/include/SceneParameters.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __I_SCENE_PARAMETERS_H_INCLUDED__
-#define __I_SCENE_PARAMETERS_H_INCLUDED__
+#pragma once
 
 #include "irrTypes.h"
 
@@ -50,6 +49,3 @@ namespace scene
 
 } // end namespace scene
 } // end namespace irr
-
-#endif
-
diff --git a/include/exampleHelper.h b/include/exampleHelper.h
index 6d1628f0..698430cb 100755
--- a/include/exampleHelper.h
+++ b/include/exampleHelper.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __EXAMPLE_HELPER_H_INCLUDED__
-#define __EXAMPLE_HELPER_H_INCLUDED__
+#pragma once
 
 #include "path.h"
 
@@ -20,5 +19,3 @@ static io::path getExampleMediaPath()
 }
 
 } // end namespace irr
-
-#endif
diff --git a/include/fast_atof.h b/include/fast_atof.h
index 73f43328..85fcd77a 100644
--- a/include/fast_atof.h
+++ b/include/fast_atof.h
@@ -2,8 +2,7 @@
 // This file is part of the "Irrlicht Engine" and the "irrXML" project.
 // For conditions of distribution and use, see copyright notice in irrlicht.h and irrXML.h
 
-#ifndef __FAST_ATOF_H_INCLUDED__
-#define __FAST_ATOF_H_INCLUDED__
+#pragma once
 
 #include "irrMath.h"
 #include "irrString.h"
@@ -365,6 +364,3 @@ inline float fast_atof(const char* floatAsString, const char** out=0)
 
 } // end namespace core
 } // end namespace irr
-
-#endif
-
diff --git a/include/irrlicht.h b/include/irrlicht.h
index d7aba073..ea888afb 100644
--- a/include/irrlicht.h
+++ b/include/irrlicht.h
@@ -26,8 +26,7 @@
   in the jpeglib, the zlib and libPng for further information.
 */
 
-#ifndef __IRRLICHT_H_INCLUDED__
-#define __IRRLICHT_H_INCLUDED__
+#pragma once
 
 #include "aabbox3d.h"
 #include "CMeshBuffer.h"
@@ -321,6 +320,3 @@ namespace irr
 /*! \file irrlicht.h
 	\brief Main header file of the irrlicht, the only file needed to include.
 */
-
-#endif
-