When you are using openGL, do you code like in C or C++?
I tried to compile an example that I retyped from the red book, and I changed the format to C++. So instead of:
void reshape (int w, int h)
I typed:
void reshape(int w, int h)
Now, should this change have any effect on actual preformance? I don’t know, so I compile it… Then I get these errors:
Compiling...
Main.cpp
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : error C2144: syntax error : 'void' should be preceded by ';'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : error C2501: 'WINGDIAPI' : missing storage-class or type specifiers
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : error C2146: syntax error : missing ';' before identifier 'glAccum'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : error C2182: 'APIENTRY' : illegal use of type 'void'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1136) : error C2144: syntax error : 'void' should be preceded by ';'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1136) : error C2501: 'WINGDIAPI' : missing storage-class or type specifiers
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1136) : error C2086: 'int WINGDIAPI' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'WINGDIAPI'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1136) : error C2146: syntax error : missing ';' before identifier 'glAlphaFunc'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1136) : error C2182: 'APIENTRY' : illegal use of type 'void'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1136) : error C2086: 'int APIENTRY' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'APIENTRY'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1137) : error C2146: syntax error : missing ';' before identifier 'GLboolean'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1137) : error C2501: 'WINGDIAPI' : missing storage-class or type specifiers
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1137) : error C2086: 'int WINGDIAPI' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'WINGDIAPI'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1137) : error C2146: syntax error : missing ';' before identifier 'glAreTexturesResident'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1137) : error C2371: 'APIENTRY' : redefinition; different basic types
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'APIENTRY'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1138) : error C2144: syntax error : 'void' should be preceded by ';'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1138) : error C2501: 'WINGDIAPI' : missing storage-class or type specifiers
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1138) : error C2086: 'int WINGDIAPI' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'WINGDIAPI'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1138) : error C2146: syntax error : missing ';' before identifier 'glArrayElement'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1138) : error C2182: 'APIENTRY' : illegal use of type 'void'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1138) : error C2086: 'int APIENTRY' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'APIENTRY'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1139) : error C2144: syntax error : 'void' should be preceded by ';'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1139) : error C2501: 'WINGDIAPI' : missing storage-class or type specifiers
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1139) : error C2086: 'int WINGDIAPI' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'WINGDIAPI'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1139) : error C2146: syntax error : missing ';' before identifier 'glBegin'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1139) : error C2182: 'APIENTRY' : illegal use of type 'void'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1139) : error C2086: 'int APIENTRY' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'APIENTRY'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1140) : error C2144: syntax error : 'void' should be preceded by ';'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1140) : error C2501: 'WINGDIAPI' : missing storage-class or type specifiers
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1140) : error C2086: 'int WINGDIAPI' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'WINGDIAPI'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1140) : error C2146: syntax error : missing ';' before identifier 'glBindTexture'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1140) : error C2182: 'APIENTRY' : illegal use of type 'void'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1140) : error C2086: 'int APIENTRY' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'APIENTRY'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1141) : error C2144: syntax error : 'void' should be preceded by ';'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1141) : error C2501: 'WINGDIAPI' : missing storage-class or type specifiers
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1141) : error C2086: 'int WINGDIAPI' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'WINGDIAPI'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1141) : error C2146: syntax error : missing ';' before identifier 'glBitmap'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1141) : error C2182: 'APIENTRY' : illegal use of type 'void'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1141) : error C2086: 'int APIENTRY' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'APIENTRY'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1142) : error C2144: syntax error : 'void' should be preceded by ';'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1142) : error C2501: 'WINGDIAPI' : missing storage-class or type specifiers
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1142) : error C2086: 'int WINGDIAPI' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'WINGDIAPI'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1142) : error C2146: syntax error : missing ';' before identifier 'glBlendFunc'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1142) : error C2182: 'APIENTRY' : illegal use of type 'void'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1142) : error C2086: 'int APIENTRY' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'APIENTRY'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1143) : error C2144: syntax error : 'void' should be preceded by ';'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1143) : error C2501: 'WINGDIAPI' : missing storage-class or type specifiers
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1143) : error C2086: 'int WINGDIAPI' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'WINGDIAPI'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1143) : error C2146: syntax error : missing ';' before identifier 'glCallList'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1143) : error C2182: 'APIENTRY' : illegal use of type 'void'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1143) : error C2086: 'int APIENTRY' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'APIENTRY'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1144) : error C2144: syntax error : 'void' should be preceded by ';'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1144) : error C2501: 'WINGDIAPI' : missing storage-class or type specifiers
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1144) : error C2086: 'int WINGDIAPI' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'WINGDIAPI'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1144) : error C2146: syntax error : missing ';' before identifier 'glCallLists'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1144) : error C2182: 'APIENTRY' : illegal use of type 'void'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1144) : error C2086: 'int APIENTRY' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'APIENTRY'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1145) : error C2144: syntax error : 'void' should be preceded by ';'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1145) : error C2501: 'WINGDIAPI' : missing storage-class or type specifiers
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1145) : error C2086: 'int WINGDIAPI' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'WINGDIAPI'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1145) : error C2146: syntax error : missing ';' before identifier 'glClear'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1145) : error C2182: 'APIENTRY' : illegal use of type 'void'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1145) : error C2086: 'int APIENTRY' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'APIENTRY'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1146) : error C2144: syntax error : 'void' should be preceded by ';'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1146) : error C2501: 'WINGDIAPI' : missing storage-class or type specifiers
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1146) : error C2086: 'int WINGDIAPI' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'WINGDIAPI'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1146) : error C2146: syntax error : missing ';' before identifier 'glClearAccum'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1146) : error C2182: 'APIENTRY' : illegal use of type 'void'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1146) : error C2086: 'int APIENTRY' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'APIENTRY'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1147) : error C2144: syntax error : 'void' should be preceded by ';'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1147) : error C2501: 'WINGDIAPI' : missing storage-class or type specifiers
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1147) : error C2086: 'int WINGDIAPI' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'WINGDIAPI'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1147) : error C2146: syntax error : missing ';' before identifier 'glClearColor'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1147) : error C2182: 'APIENTRY' : illegal use of type 'void'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1147) : error C2086: 'int APIENTRY' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'APIENTRY'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1148) : error C2144: syntax error : 'void' should be preceded by ';'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1148) : error C2501: 'WINGDIAPI' : missing storage-class or type specifiers
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1148) : error C2086: 'int WINGDIAPI' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'WINGDIAPI'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1148) : error C2146: syntax error : missing ';' before identifier 'glClearDepth'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1148) : error C2182: 'APIENTRY' : illegal use of type 'void'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1148) : error C2086: 'int APIENTRY' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'APIENTRY'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1149) : error C2144: syntax error : 'void' should be preceded by ';'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1149) : error C2501: 'WINGDIAPI' : missing storage-class or type specifiers
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1149) : error C2086: 'int WINGDIAPI' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'WINGDIAPI'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1149) : error C2146: syntax error : missing ';' before identifier 'glClearIndex'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1149) : error C2182: 'APIENTRY' : illegal use of type 'void'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1149) : error C2086: 'int APIENTRY' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'APIENTRY'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1150) : error C2144: syntax error : 'void' should be preceded by ';'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1150) : error C2501: 'WINGDIAPI' : missing storage-class or type specifiers
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1150) : error C2086: 'int WINGDIAPI' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'WINGDIAPI'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1150) : error C2146: syntax error : missing ';' before identifier 'glClearStencil'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1150) : error C2182: 'APIENTRY' : illegal use of type 'void'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1150) : error C2086: 'int APIENTRY' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'APIENTRY'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1151) : error C2144: syntax error : 'void' should be preceded by ';'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1151) : error C2501: 'WINGDIAPI' : missing storage-class or type specifiers
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1151) : error C2086: 'int WINGDIAPI' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'WINGDIAPI'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1151) : error C2146: syntax error : missing ';' before identifier 'glClipPlane'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1151) : error C2182: 'APIENTRY' : illegal use of type 'void'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1151) : error C2086: 'int APIENTRY' : redefinition
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1135) : see declaration of 'APIENTRY'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1152) : error C2144: syntax error : 'void' should be preceded by ';'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1152) : error C2501: 'WINGDIAPI' : missing storage-class or type specifiers
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\GL\gl.h(1152) : fatal error C1003: error count exceeds 100; stopping compilation
Now, did I do anything to the code? No, I simply typed word for word, letter for letter (except the changes to the style) as it was showed in the redbook.
How do I fix this?