void glutRemoveMenuItem( int item ) {}
void glutAttachMenu( int button ) {}
void glutDetachMenu( int button ) {}
+void glutSetMenuFont( int menuID, void* font ) {}
void glutBitmapCharacter( void* font, int character ) {}
int glutBitmapWidth( void* font, int character ) { return 0; }
void glutStrokeCharacter( void* font, int character ) {}
int glutStrokeWidth( void* font, int character ) { return 0; }
+GLfloat glutStrokeWidthf( void* font, int character ) { return 0.0f; }
int glutBitmapLength( void* font, const unsigned char* string ) { return 0; }
int glutStrokeLength( void* font, const unsigned char* string ) { return 0; }
+GLfloat glutStrokeLengthf( void* font, const unsigned char *string ) { return 0.0f; }
void *glutGetMenuData( void ) { return NULL; }
void glutSetMenuData(void* data) {}