SetWindowsHookEx后,对位于标题栏中的WM_LBUTTONDOWN事件仍然无法捕捉...

[dtwstm]

在屏幕上其他区域均能捕捉到WM_LBUTTONDOWN消息,但是对于任意窗口的标题栏点击时,却无法响应,请问这是怎么回事?

[dtwstm]

各位大虾帮帮我!

[dtwstm]

为什么其他地方能捕捉到，但是偏偏标题栏就捕捉不到呢。是不是标题栏能够先得到WM_LBUTTONDOWN消息，然后就从消息队列重清除而不继续传送呢。我试过对于WM_MOUSEMOVE
消息不存在这个问题。
我用的函数是SetWindowsHookEx(WH_MOUSE,MouseProc,m_Instance,0);

[dtwstm]

加分了，盼答复！

[azuo_lee]

标题栏上的消息不是WM_LBUTTONDOWN，而是WM_NCLBUTTONDOWN。

[dtwstm]

WM_NCLBUTTONDOWN
The WM_NCLBUTTONDOWN message is posted when the user presses the left mouse button while the cursor is within the nonclient area of a window. This message is posted to the window that contains the cursor. If a window has captured the mouse, this message is not posted.

WM_LBUTTONDOWN
The WM_LBUTTONDOWN message is posted when the user presses the left mouse button while the cursor is in the client area of a window. If the mouse is not captured, the message is posted to the window beneath the cursor. Otherwise, the message is posted to the window that has captured the mouse.

问题很快解决了，多谢azuo_lee!
以上是从msdn上copy过来的，供大家参考！

[dtwstm]

不好意思，我的基础知识不够...给分了。

[KissYou]

dtwstm：
怎么解决的？能否告诉我！
我的程序也存在这个问题！是不是把SetWindowsHookEx的第一个参数改成WH_MOUSE_LL?
请教？

[KissYou]

哦，我知道了！！