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void CLi3_1View::OnDraw(CDC* pDC)
{
CLi3_1Doc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
CPen *PenOld,PenNew;
CBrush *BrushOld,BrushNew;
PenOld=(CPen *)pDC->SelectStockObject(BLACK_PEN);
BrushOld =(CBrush *)pDC->SelectStockObject(LTGRAY_BRUSH);
pDC->Rectangle(100,100,300,300);
PenNew.CreateStockObject(WHITE_PEN);
pDC->SelectObject(&PenNew);
pDC->MoveTo(100,100);
pDC->LineTo(300,300);
pDC->MoveTo(100,300);
pDC->LineTo(300,100);
pDC->SelectObject(PenOld);
pDC->SelectObject(BrushOld);
if (!pDoc)
return;
// TODO: 在此处为本机数据添加绘制代码
}