subject_24004.htm

一些关于vc的问答

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序号：24004 发表者：硬撅撅 发表日期：2002-12-08 19:59:13
<br>主题：对话框的OnCtlColor()和OnEraseBkgnd()对应什么消息？
<br>内容：干吗用的
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<font color=red>答案被接受</font><br>回复者：tjhe 回复日期：2002-12-08 20:29:56
<br>内容：WM_CTLCOLOR\WM_ERASEBKGND.<BR><BR>In MSDN:<BR><BR>WM_CTLCOLOR 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<BR><BR><BR>WM_ERASEBKGND The framework calls this member function when the CWnd object background needs erasing (for example, when resized). It is called to prepare an invalidated region for painting.<BR><BR><BR>2002-12-8 20:30:29