Question

MFC 自绘按钮 出错

请教如何创建一个椭圆形按钮
添加ModifyStyle(0, BS_OWNERDRAW);后就会报错
---------------------------
Microsoft Visual C++ Debug Library
---------------------------
Debug Assertion Failed!

Program: C:\Documents and Settings\My\桌面\tt\Debug\tt.exe
File: winctrl1.cpp
Line: 72

For information on how your program can cause an assertion
failure, see the Visual C++ documentation on asserts.

(Press Retry to debug the application)
---------------------------
终止(A) 重试(R) 忽略(I)
---------------------------

Answer 1

必须重载DrawItem函数，否则会报错。

Answer 2

ModifyStyle(0, BS_OWNERDRAW, SWP_FRAMECHANGED);试一下这个。
SWP_FRAMECHANGED);

ModifyStyle(0, BS_OWNERDRAW, SWP_FRAMECHANGED);

Answer 3

你指定了自绘属性，就必须重载DrawItem函数。