NCMsg_Test

UINT CNCMsgDlg::OnNcHitTest(CPoint point) {UINT nTest;RECT rect;GetWindowRect(&rect);//如果鼠标指针处于窗体边界5像素以内，可以拖动改变窗体大小。//如果鼠标指针处于窗体上部20像素以内，可以像标题栏那样移动窗体。if(point.x >= rect.left && point.x < rect.left + 4)//鼠标X坐标在窗体左边界{if(point.y >= rect.top && point.y <= rect.top + 4)nTest = HTTOPLEFT;//鼠标在窗体左上角else if(point.y >= rect.bottom-4 && point.y <= rect.bottom)nTest = HTBOTTOMLEFT;//鼠标在窗体左下角elsenTest = HTLEFT;//鼠标在窗体左边界其它位置}else if(point.x <= rect.right && point.x >= rect.right - 4)//鼠标X坐标在窗体右边界{if(point.y >= rect.top && point.y <= rect.top + 4)nTest = HTTOPRIGHT;//鼠标在窗体右上角else if(point.y >= rect.bottom-4 && point.y <= rect.bottom)nTest = HTBOTTOMRIGHT;//鼠标在窗体右下角elsenTest = HTRIGHT;//鼠标在窗体右边界其它位置}else if(point.y >= rect.top && point.y <= rect.top + 4){nTest = HTTOP;//鼠标在窗体上边界}else if(point.y >= rect.bottom - 4 && point.y < rect.bottom){nTest = HTBOTTOM;//鼠标}else if(point.y < rect.top + 20){nTest = HTCAPTION;//鼠标处于“标题栏”}else{nTest = HTCLIENT;//默认情况，无特殊处理}return nTest;}