MFC自定义消息实例

1、新建一个SHOW名称的对话框文件

2、在SHOWDlg.h中添加代码

#define WM_Display (WM_USER+100)afx_msg LRESULT OnDisplay(WPARAM wParam, LPARAM lParam);

3、在SHOWDlg.cpp中添加代码

BEGIN_MESSAGE_MAP(CSHOWDlg, CDialog)...ON_MESSAGE(WM_Display, OnDisplay)
END_MESSAGE_MAP()BOOL CSHOWDlg::OnInitDialog()
{CDialog::OnInitDialog();::PostMessage(GetSafeHwnd(),WM_Display,0,0);...	return TRUE;  // return TRUE  unless you set the focus to a control
}LRESULT CSHOWDlg::OnDisplay(WPARAM wParam, LPARAM lParam)
{//MessageBox("recv msg success");//添加自己的消息处理MessageBox("WM_USER_message");return 0;  
}

3、运行程序