VC学习1

将MessageBox的用法结合用class wizard添加消息映射，多举些例子。

OnChar(UINT nChar, UINT nRepCnt, UINT nFlags)

{CClientDC dc(this);

dc.TextOut(10,10,"message");

...

}

int t=MessageBox()

MB_OK,MB_OKCANCEL,MB_YESNO...

MB_ICONSTOP,MB_ICONINFORMATION,MB_ICONEXCLAMATION...

if (t==IDOK,IDYES,IDCANCEL...)

{...}