//创建绘制正旋曲线的pen并将其选入设备上下文 CPen pen(PS_SOLID,1,RGB(255,0,0)); HGDIOBJ oldObject = dc.SelectObject(pen.GetSafeHandle()); … //创建绘制x轴的pen并将其选入设备上下文 CPen penx(PS_SOLID,1,RGB(0,0,255)); dc.SelectObject(penx.GetSafeHandle()); … //恢复原先的pen dc.SelectObject(oldObject); |
Pen myPen(Color::Red); myPen.SetWidth(1); … graphics.DrawLine(&myPen,i,100*sin(2*(i/(rect.right/5.0))*PI), i+1,100*sin(2*((i+1)/(rect.right/5.0))*PI)); … graphics.DrawLine(&myPen,0,0,rect.right,0); |
//绘制正旋曲线 dc.MoveTo(0,0) ; for(int i=0;i<rect.right;i++) { dc.LineTo(i,100*sin(2*(i/(rect.right/5.0))*PI)); } |
graphics.DrawLine(&myPen,0,0,rect.right,0); |
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