RegisterWindowMessage自定义消息
UINT WINAPI RegisterWindowMessage( __in LPCTSTR lpString );
Window API 写道
Parameters
lpString [in]
Type: LPCTSTR
The message to be registered.
Return value
Type:
Type: UINT
If the message is successfully registered, the return value is a message identifier in the range 0xC000 through 0xFFFF.
If the function fails, the return value is zero. To get extended error information, call GetLastError .
lpString [in]
Type: LPCTSTR
The message to be registered.
Return value
Type:
Type: UINT
If the message is successfully registered, the return value is a message identifier in the range 0xC000 through 0xFFFF.
If the function fails, the return value is zero. To get extended error information, call GetLastError .
使用方法：
1.注册自定义消息
const UINT WM_MSG_ONLOAD = ::RegisterWindowMessage(_T("IPC_MSG_ONLOAD"));
2. 编写消息处理函数
LRESULT OnLoad(WPARAM wParam,LPARAM lParam)
3.捕获消息（关联消息和处理函数）
在BEGIN_MESSAGE_MAP和END_MESSAGE_MAP中添加：
ON_REGISTERED_MESSAGE(WM_MSG_ONLOAD, OnLoad)
4.发送消息
::PostMessage(HWND_BROADCAST,WM_MSG_OnLoad,(WPARAM)hWnd,0);
注：
消息是系统全局的，所以，IPC_MSG_ONLOAD可以用UUID。