服务程序中为何全局鼠标钩子失效?(参见代码,分不够再加)
LRESULT WINAPI MouseProc(int nCode,WPARAM wparam,LPARAM lparam);
void _ServiceMain( void* )
{
SelectDesktop("default");//切换到default桌面
MouseglhHook=SetWindowsHookEx(WH_MOUSE,(HOOKPROC)MouseProc,
AfxGetInstanceHandle(),GetCurrentThreadId());
if(MouseglhHook)
MessageBeep(1);/// 为了调试服务程序
// Waiting for stop the service
while( WaitForSingleObject( hStopServiceEvent, 10 ) != WAIT_OBJECT_0 )
{
}
UnhookWindowsHookEx(MouseglhHook);
// Let's delete itself, after the service stopped
DeleteSvc();
CloseHandle( hStopServiceEvent );
}
LRESULT WINAPI MouseProc(int nCode,WPARAM wparam,LPARAM lparam)
{
MessageBeep(1);/// 为了调试服务程序
LPMOUSEHOOKSTRUCT pMouseHook=(MOUSEHOOKSTRUCT FAR *) lparam;
if (wparam==513)
{
///Do something
}
return CallNextHookEx(MouseglhHook,nCode,wparam,lparam);
//继续传递消息
}
问题:调用SetWindowsHookEx时成功,但钩不到鼠标信息,也就是MouseProc(int nCode,WPARAM wparam,LPARAM lparam)没有跟踪到消息,请问是为什么?