挖空窗口某个区域

virtual LRESULT DefWindowProc(UINT message, WPARAM wParam, LPARAM lParam);

挖空窗口某个区域函数
LRESULT *****::DefWindowProc( UINT message, WPARAM wParam, LPARAM lParam )

{

// TODO: 在此添加专用代码和/或调用基类

LRESULT lrst = CDialog::DefWindowProc(message, wParam, lParam);

if (!::IsWindow(m_hWnd))

{

return lrst;

}

//窗口的移动、重绘、非客户区重绘、非客户激活

if (message==WM_MOVE||message==WM_PAINT||message==WM_NCPAINT||message==WM_NCACTIVATE/* ||message == WM_NOTIFY*/)  

{  

CDC* pWinDC = GetWindowDC();

CRect rctBtn;

CRect rctWnd;

GetWindowRect(&rctWnd);

pWinDC->ExcludeClipRect(rctWnd.Width()-26,5,rctWnd.Width()-26+22,27);

if (pWinDC)  

DrawTitleBar(pWinDC); //边框重绘函数 

ReleaseDC(pWinDC);  

}

return lrst; 

//return CDialog::DefWindowProc(message, wParam, lParam);

}