I want to use FreeImage and CEGUI together. So I include the headers like

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0

Editorial Team

Asked: May 29, 20262026-05-29T07:45:06+00:00 2026-05-29T07:45:06+00:00

I want to use FreeImage and CEGUI together. So I include the headers like

0

I want to use FreeImage and CEGUI together.

So I include the headers like this:

#include <RendererModules/OpenGL/CEGUIOpenGL.h>
#include <RendererModules/OpenGL/CEGUIOpenGLGeometryBuffer.h>
#include <RendererModules/OpenGL/CEGUIOpenGLRenderer.h>
#include <RendererModules/OpenGL/CEGUIOpenGLRenderTarget.h>
#include <RendererModules/OpenGL/CEGUIOpenGLTexture.h>
#include <RendererModules/OpenGL/CEGUIOpenGLTextureTarget.h>
#include <RendererModules/OpenGL/CEGUIOpenGLViewportTarget.h>
#nclude  <FreeImage>

But the problem is that when I compile, I get the following errors:

Error   10  error C2144: syntax error : 'void' should be preceded by ';'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1152
Error   11  error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1152
Error   12  error C2146: syntax error : missing ';' before identifier 'glAccum' c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1152
Error   13  error C2182: 'APIENTRY' : illegal use of type 'void'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1152
Error   14  error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1152
Error   15  error C2144: syntax error : 'void' should be preceded by ';'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1153
Error   16  error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1153
Error   17  error C2086: 'int WINGDIAPI' : redefinition c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1153
Error   18  error C2146: syntax error : missing ';' before identifier 'glAlphaFunc' c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1153
Error   19  error C2182: 'APIENTRY' : illegal use of type 'void'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1153
Error   20  error C2086: 'int APIENTRY' : redefinition  c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1153
Error   21  error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1153
Error   22  error C2146: syntax error : missing ';' before identifier 'GLboolean'   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1154
Error   23  error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1154
Error   24  error C2086: 'int WINGDIAPI' : redefinition c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1154
Error   25  error C2146: syntax error : missing ';' before identifier 'glAreTexturesResident'   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1154
Error   26  error C2371: 'APIENTRY' : redefinition; different basic types   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1154
Error   27  error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1154
Error   28  error C2144: syntax error : 'void' should be preceded by ';'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1155
Error   29  error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1155
Error   30  error C2086: 'int WINGDIAPI' : redefinition c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1155
Error   31  error C2146: syntax error : missing ';' before identifier 'glArrayElement'  c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1155
Error   32  error C2182: 'APIENTRY' : illegal use of type 'void'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1155
Error   33  error C2086: 'int APIENTRY' : redefinition  c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1155
Error   34  error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1155
Error   35  error C2144: syntax error : 'void' should be preceded by ';'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1156
Error   36  error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1156
Error   37  error C2086: 'int WINGDIAPI' : redefinition c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1156
Error   38  error C2146: syntax error : missing ';' before identifier 'glBegin' c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1156
Error   39  error C2182: 'APIENTRY' : illegal use of type 'void'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1156
Error   40  error C2086: 'int APIENTRY' : redefinition  c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1156
Error   41  error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1156
Error   42  error C2144: syntax error : 'void' should be preceded by ';'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1157
Error   43  error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1157
Error   44  error C2086: 'int WINGDIAPI' : redefinition c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1157
Error   45  error C2146: syntax error : missing ';' before identifier 'glBindTexture'   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1157
Error   46  error C2182: 'APIENTRY' : illegal use of type 'void'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1157
Error   47  error C2086: 'int APIENTRY' : redefinition  c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1157
Error   48  error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1157
Error   49  error C2144: syntax error : 'void' should be preceded by ';'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1158
Error   50  error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1158
Error   51  error C2086: 'int WINGDIAPI' : redefinition c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1158
Error   52  error C2146: syntax error : missing ';' before identifier 'glBitmap'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1158
Error   53  error C2182: 'APIENTRY' : illegal use of type 'void'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1158
Error   54  error C2086: 'int APIENTRY' : redefinition  c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1158
Error   55  error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1158
Error   56  error C2144: syntax error : 'void' should be preceded by ';'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1159
Error   57  error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1159
Error   58  error C2086: 'int WINGDIAPI' : redefinition c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1159
Error   59  error C2146: syntax error : missing ';' before identifier 'glBlendFunc' c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1159
Error   60  error C2182: 'APIENTRY' : illegal use of type 'void'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1159
Error   61  error C2086: 'int APIENTRY' : redefinition  c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1159
Error   62  error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1159
Error   63  error C2144: syntax error : 'void' should be preceded by ';'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1160
Error   64  error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1160
Error   65  error C2086: 'int WINGDIAPI' : redefinition c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1160
Error   66  error C2146: syntax error : missing ';' before identifier 'glCallList'  c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1160
Error   67  error C2182: 'APIENTRY' : illegal use of type 'void'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1160
Error   68  error C2086: 'int APIENTRY' : redefinition  c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1160
Error   69  error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1160
Error   70  error C2144: syntax error : 'void' should be preceded by ';'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1161
Error   71  error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1161
Error   72  error C2086: 'int WINGDIAPI' : redefinition c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1161
Error   73  error C2146: syntax error : missing ';' before identifier 'glCallLists' c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1161
Error   74  error C2182: 'APIENTRY' : illegal use of type 'void'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1161
Error   75  error C2086: 'int APIENTRY' : redefinition  c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1161
Error   76  error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1161
Error   77  error C2144: syntax error : 'void' should be preceded by ';'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1162
Error   78  error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1162
Error   79  error C2086: 'int WINGDIAPI' : redefinition c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1162
Error   80  error C2146: syntax error : missing ';' before identifier 'glClear' c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1162
Error   81  error C2182: 'APIENTRY' : illegal use of type 'void'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1162
Error   82  error C2086: 'int APIENTRY' : redefinition  c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1162
Error   83  error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1162
Error   84  error C2144: syntax error : 'void' should be preceded by ';'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1163
Error   85  error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1163
Error   86  error C2086: 'int WINGDIAPI' : redefinition c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1163
Error   87  error C2146: syntax error : missing ';' before identifier 'glClearAccum'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1163
Error   88  error C2182: 'APIENTRY' : illegal use of type 'void'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1163
Error   89  error C2086: 'int APIENTRY' : redefinition  c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1163
Error   90  error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1163
Error   91  error C2144: syntax error : 'void' should be preceded by ';'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1164
Error   92  error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1164
Error   93  error C2086: 'int WINGDIAPI' : redefinition c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1164
Error   94  error C2146: syntax error : missing ';' before identifier 'glClearColor'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1164
Error   95  error C2182: 'APIENTRY' : illegal use of type 'void'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1164
Error   96  error C2086: 'int APIENTRY' : redefinition  c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1164
Error   97  error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1164
Error   98  error C2144: syntax error : 'void' should be preceded by ';'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1165
Error   99  error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1165
Error   100 error C2086: 'int WINGDIAPI' : redefinition c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1165
Error   101 error C2146: syntax error : missing ';' before identifier 'glClearDepth'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1165
Error   102 error C2182: 'APIENTRY' : illegal use of type 'void'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1165
Error   103 error C2086: 'int APIENTRY' : redefinition  c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1165
Error   104 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1165
Error   105 error C2144: syntax error : 'void' should be preceded by ';'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1166
Error   106 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1166
Error   107 error C2086: 'int WINGDIAPI' : redefinition c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1166
Error   108 error C2146: syntax error : missing ';' before identifier 'glClearIndex'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1166
Error   109 error C2182: 'APIENTRY' : illegal use of type 'void'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1166
Error   110 error C2086: 'int APIENTRY' : redefinition  c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1166
Error   111 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1166
Error   112 error C2144: syntax error : 'void' should be preceded by ';'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1167
Error   113 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1167
Error   114 error C2086: 'int WINGDIAPI' : redefinition c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1167
Error   115 error C2146: syntax error : missing ';' before identifier 'glClearStencil'  c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1167
Error   116 error C2182: 'APIENTRY' : illegal use of type 'void'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1167
Error   117 error C2086: 'int APIENTRY' : redefinition  c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1167
Error   118 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1167
Error   119 error C2144: syntax error : 'void' should be preceded by ';'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1168
Error   120 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1168
Error   121 error C2086: 'int WINGDIAPI' : redefinition c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1168
Error   122 error C2146: syntax error : missing ';' before identifier 'glClipPlane' c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1168
Error   123 error C2182: 'APIENTRY' : illegal use of type 'void'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1168
Error   124 error C2086: 'int APIENTRY' : redefinition  c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1168
Error   125 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1168
Error   126 error C2144: syntax error : 'void' should be preceded by ';'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1169
Error   127 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1169
Error   128 error C2086: 'int WINGDIAPI' : redefinition c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1169
Error   129 error C2146: syntax error : missing ';' before identifier 'glColor3b'   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1169
Error   130 error C2182: 'APIENTRY' : illegal use of type 'void'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1169
Error   131 error C2086: 'int APIENTRY' : redefinition  c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1169
Error   132 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1169
Error   133 error C2144: syntax error : 'void' should be preceded by ';'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1170
Error   134 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1170
Error   135 error C2086: 'int WINGDIAPI' : redefinition c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1170
Error   136 error C2146: syntax error : missing ';' before identifier 'glColor3bv'  c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1170
Error   137 error C2182: 'APIENTRY' : illegal use of type 'void'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1170
Error   138 error C2086: 'int APIENTRY' : redefinition  c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1170
Error   139 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1170
Error   140 error C2144: syntax error : 'void' should be preceded by ';'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1171
Error   141 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1171
Error   142 error C2086: 'int WINGDIAPI' : redefinition c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1171
Error   143 error C2146: syntax error : missing ';' before identifier 'glColor3d'   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1171
Error   144 error C2182: 'APIENTRY' : illegal use of type 'void'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1171
Error   145 error C2086: 'int APIENTRY' : redefinition  c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1171
Error   146 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1171
Error   147 error C2144: syntax error : 'void' should be preceded by ';'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1172
Error   148 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1172
Error   149 error C2086: 'int WINGDIAPI' : redefinition c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1172
Error   150 error C2146: syntax error : missing ';' before identifier 'glColor3dv'  c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1172
Error   151 error C2182: 'APIENTRY' : illegal use of type 'void'    c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1172
Error   152 error C1003: error count exceeds 100; stopping compilation  c:\program files (x86)\microsoft sdks\windows\v7.0a\include\gl\gl.h 1172

Note that when I use CEGUI without using FreeImage, it compiles without any problems. And the same goes for FreeImage without CEGUI. But the problem is coming when I want to use both libraries together ( FreeImage and CEGUI ).

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1 Answer

Editorial Team · Answer 1 · 2026-05-29T07:45:07+00:00

Editorial Team

2026-05-29T07:45:07+00:00Added an answer on May 29, 2026 at 7:45 am

These errors usually appear in Windows when windows.h has been included after gl.h.

Make sure that you include windows.h before including gl.h, or any other file which may indirectly include gl.h.

As stated on MSDN, this is necessary for OpenGL to work.

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I want to use FreeImage and CEGUI together. So I include the headers like

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