MFC中自定义消息

1. 头文件

#define WM_MYMSG       WM_USER+1   // 范围在 WM_USER ~ 0x7fff  即  0x0400 ~ 0x7fff

afx_msg LRESULT OnMyMsg(WPARAM wParam, LPARAM lParam);

2. cpp文件中

BEGIN_MESSAGE_MAP(CMyWnd, CMyParentWndClass)
　　ON_MESSAGE(WM_MYMSG, OnMyMsg)
END_MESSAGE_MAP()

afx_msg LRESULT CMyWnd::OnMyMsg(WPARAM wParam, LPARAM lParam)
{
....
}

3. 在其他地方使用

CMyWnd* pWnd = ...;
pWnd->SendMessage(WM_MYMSG);