一个简单问题

[javacb]

error C2504: 'CFrameWnd' : base class undefined
error C2143: syntax error : missing ';' before 'public'
error C2143: syntax error : missing ';' before '}'
error C2440: '=' : cannot convert from 'class canvasFrame *' to 'class CWnd *'
Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
Error executing cl.exe.

为什么说我的caframewnd 未定义？？？我使用的是mfc！

[collide]

假如头文件，MainFrm.h

[akiko]

#include <afxwin.h>