WM_CTLCOLOR在什么什么时候产生
WM_CTLCOLOR在什么什么时候产生

[解决办法]
用vs的spy++监控窗口消息看看
[解决办法]
The framework calls this member function when a child control is about to be drawn. Most controls send this message to their parent (usually a dialog box) to prepare the pDC for drawing the control using the correct colors.
[解决办法]
WM_CREAT之后产生