如果你以前建一个新的CPen时,你总是
CPen* pOldPen,newpen;
newpen.Create(....);
pOldPen=pDC->SelectObject(&newpen);
pDC->Draw....
pDC->SelectObject(pOldPen);
如用RestoreDC可以:
CPen newpen;
newpen.Create(....);
pDC->SaveDC..
pDC->SelectObject(&newpen);
pDC->Draw....
pDC->RestoreDC..;
CPen* pOldPen,newpen;
newpen.Create(....);
pOldPen=pDC->SelectObject(&newpen);
pDC->Draw....
pDC->SelectObject(pOldPen);
如用RestoreDC可以:
CPen newpen;
newpen.Create(....);
pDC->SaveDC..
pDC->SelectObject(&newpen);
pDC->Draw....
pDC->RestoreDC..;
解决方案 »
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