这样的代码为何会导致死机??
这样的代码为何会导致死机??
void CMainFrame::OnPaint()
{
CRect rc;
CDC dc;
dc.m_hDC=::GetDC(this->m_hWndMDIClient);
CBrush br(RGB(120,200,120));
dc.SelectObject(&br);
GetClientRect(&rc);
dc.PatBlt(rc.left,rc.top,rc.Width(),rc.Height(),PATCOPY);
ReleaseDC(&dc);
}