MFC 鼠标拖动无边框窗口

在鼠标左键按下消息中添加以下代码：

PostMessage(WM_NCLBUTTONDOWN,   HTCAPTION,   MAKELPARAM(point.x,   point.y));  

比如：

void Dialog1::OnLButtonDown(UINT nFlags, CPoint point)
{
 // TODO: Add your message handler code here and/or call default
 PostMessage(WM_NCLBUTTONDOWN,   HTCAPTION,   MAKELPARAM(point.x,   point.y));  
 CDialog::OnLButtonDown(nFlags, point);
}

也可以在鼠标右键按下中添加