在OnPaint函数中:
CWnd* pWnd=this->GetDlgItem(IDC_STATIC1); //要画图的Picture的IDCDC* pDC=pWnd->GetDC();pWnd->Invalidate();pWnd->UpdateWindow();pOldPen=pDC->SelectObject(&pen);pDC->MoveTo(0,0);pDC->LineTo(200,200);
