MFC常用的绘图操作
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CPen pen;//画笔
pen.CreatePen(PS_SOLID, 1, m_coForeColor);
CPen * pOldPen = theMemDC.SelectObject(&pen);
LOGBRUSH logBrush;
logBrush.lbStyle = BS_SOLID;
logBrush.lbColor = m_coForeColor;
CBrush brush;
brush.CreateBrushIndirect(&logBrush);
CBrush * pOldBrush = theMemDC.SelectObject(&brush);
CPoint pt[] = { CPoint(9,9),CPoint(25,17),CPoint(9,28) };
theMemDC.Polygon(pt, 3);//画三角形
//标题文字
CRect rt2(30, 9, 250, 27);
theMemDC.SetBkMode(0);
theMemDC.SetTextColor(m_coForeColor);
theMemDC.SetBkColor(RGB(255, 0, 0));
CFont font;
font.CreatePointFont(99, _T("微软雅黑"), &theMemDC);
CFont * pOldFont = theMemDC.SelectObject(&font);
theMemDC.DrawText(m_sTime, rt2, DT_SINGLELINE | DT_LEFT);
m_bmpBlueToothOpenDC.BitTrans(610, 7, m_bmpBlueToothOpenDC.Width(),
m_bmpBlueToothOpenDC.Height(), &theMemDC, 0, 0, RGB(43, 157, 229));
pDC->BitBlt(0,0,m_nWidth,m_nHeight,&theMemDC,0,0,SRCCOPY);
theMemDC.SelectObject(pOldPen);
theMemDC.SelectObject(pOldFont);
theMemDC.SelectObject(pOldBrush);
MemDC.DeleteDC();以上是关于MFC常用的绘图操作的主要内容，如果未能解决你的问题，请参考以下文章
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