The WM_LBUTTONUP message is posted when the user releases 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.WM_LBUTTONUP又不会发送到父窗口去,你是需要在ComboBox中处理WM_LBUTTONUP消息吗?你可以派生CComboBox类,在里面处理WM_LBUTTONUP消息即可
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