windows - Windows XP 中的纯消息窗口未收到 WM_POWERBROADCAST

Question

我试图找出广播消息是否会发送到仅消息窗口，即创建为:

hWnd = CreateWindow(MAKEINTATOM(RegisterClass(&wnd)), NULL, 0, 0, 0, 0, 0, 0, HWND_MESSAGE, hInstance, 0);

问题是我没有收到任何广播消息到那个窗口...;)

Answer 1

你的怀疑是正确的。仅消息窗口(通过为 CreateWindowEx 函数的 hwndParent 参数指定 HWND_MESSAGE 创建的窗口)不接收广播通知:

A message-only window enables you to send and receive messages. It is not visible, has no z-order, cannot be enumerated, and does not receive broadcast messages. The window simply dispatches messages.

引用:MSDN