Question

我有一个项目，我首先使用gcc构建gl3w.c，然后使用g ++构建自己的OGLGraphics.cpp文件。 Gcc成功编译gl3w.c但是当g ++尝试编译包含gl3w.h的文件时，我收到了以下错误：

In file included from /mnt/hgfs/grace/src/grace-output/graphics/OGLGraphics.cpp:22:0:
/mnt/hgfs/grace/src/grace-output/include/GL3/gl3w.h:69:8: error: ‘PFNGLDRAWARRAYSPROC’ does not name a type
/mnt/hgfs/grace/src/grace-output/include/GL3/gl3w.h:70:8: error: ‘PFNGLDRAWELEMENTSPROC’ does not name a type
/mnt/hgfs/grace/src/grace-output/include/GL3/gl3w.h:71:8: error: ‘PFNGLGETPOINTERVPROC’ does not name a type
/mnt/hgfs/grace/src/grace-output/include/GL3/gl3w.h:72:8: error: ‘PFNGLPOLYGONOFFSETPROC’ does not name a type
/mnt/hgfs/grace/src/grace-output/include/GL3/gl3w.h:73:8: error: ‘PFNGLCOPYTEXIMAGE1DPROC’ does not name a type
/mnt/hgfs/grace/src/grace-output/include/GL3/gl3w.h:74:8: error: ‘PFNGLCOPYTEXIMAGE2DPROC’ does not name a type
/mnt/hgfs/grace/src/grace-output/include/GL3/gl3w.h:75:8: error: ‘PFNGLCOPYTEXSUBIMAGE1DPROC’ does not name a type
/mnt/hgfs/grace/src/grace-output/include/GL3/gl3w.h:76:8: error: ‘PFNGLCOPYTEXSUBIMAGE2DPROC’ does not name a type
/mnt/hgfs/grace/src/grace-output/include/GL3/gl3w.h:77:8: error: ‘PFNGLTEXSUBIMAGE1DPROC’ does not name a type
/mnt/hgfs/grace/src/grace-output/include/GL3/gl3w.h:78:8: error: ‘PFNGLTEXSUBIMAGE2DPROC’ does not name a type
/mnt/hgfs/grace/src/grace-output/include/GL3/gl3w.h:79:8: error: ‘PFNGLBINDTEXTUREPROC’ does not name a type
/mnt/hgfs/grace/src/grace-output/include/GL3/gl3w.h:80:8: error: ‘PFNGLDELETETEXTURESPROC’ does not name a type
/mnt/hgfs/grace/src/grace-output/include/GL3/gl3w.h:81:8: error: ‘PFNGLGENTEXTURESPROC’ does not name a type
/mnt/hgfs/grace/src/grace-output/include/GL3/gl3w.h:82:8: error: ‘PFNGLISTEXTUREPROC’ does not name a type

我不知道为什么它适用于C文件但不适用于C ++？

Answer 1

您是否遵循了GL3W自述文件中列出的程序？具体来说，在任何OpenGL文件之前，包括gl3w.h 首先的部分。

哦，在window.h之前，可以包括gl.h。

Answer 2

extern PFNGLDRAWARRAYSPROC gl3wDrawArrays;  <—— unknown type name PFNGLDRAWARRAYSPROC

此错误是由代码中包含#include <OpenGL/gl.h>引起的，例如GLTriangleBatch.h。如果用#include“GL / gl3w.h”代替，这是OpenGL 3/4调用，那么这将删除错误。我认为不同版本的OpenGL调用之间存在冲突，这会导致未知类型错误当我试图将SuperBible 5代码移植到SB6中时，我自己遇到了同样的问题。

来自c ++文件的gl3w错误

2 个答案: