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<tr><td><p align="center"><font color="#FF0000">如何访问预定义的GDI对象</font></td></tr>
<tr><td><p>
</Br>
可以通过调用CDC:: SlectStockObject使用Windows的几个预定义的对象，诸如刷子、笔以及字体。下例使用了Windows预定义的笔和刷子GDI对象在视窗中画一个椭圆。<Br>
//Draw ellipse using stock black pen and gray brush.<Br>
void CSampleView:: OnDraw (CDC* pDC)<Br>
{<Br>
//Determine size of view.<Br>
CRect rcView<Br>
GetClientRect (rcView)<Br>
</Br>
//Use stock black pen and stock gray brush to draw ellipse.<Br>
pDC->SelectStockObject (BLACK_PEN)<Br>
pDC->SelectStockObject (GRAY_BRUSH)<Br>
//Draw the ellipse.<Br>
pDC->Ellipse (reView)<Br>
}<Br>
</Br>
也可以调用新的SDK函数GetSysColorBrush获取一个系统颜色刷子，下例用背景色在视窗中画一个椭圆：<Br>
void CsampleView:: OnDraw (CDC* pDC)<Br>
{<Br>
//Determine size of view.<Br>
CRect rcView<Br>
GetClientRect (rcView)<Br>
</Br>
//Use background color for tooltips brush.<Br>
CBrush * pOrgBrush=pDC->SelectObject ( CBrush ::FromHandle( ::GetSysColorBrush (COLOR_INFOBK)))<Br>
</Br>
//Draw the ellipse.<Br>
pDC->Ellipse (rcView)<Br>
</Br>
//Restore original brush.<Br>
pDC->SelectObject (pOrgBrush)<Br>
}<Br>
</Br>
</p></td></tr>
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