怎样画出有颜色的线条?

Question

怎样画出有颜色的线条?

Answer 1

CBrush *pOldBrush,NewBrush;
NewBrush.Create()
pOldBrush = pDC->SelectObject(&NewBrush);
///////////////////////////
// paint the color line
/////////////////////
pDC->SelectObject(pOldBrush);

Answer 2

在OnPaint()函数中
CPen m_pen;
m_pen.CreatePen(PS_SOLID,2,RGB(255,0,0));
CPen *pOldPen=dc.SelectObject（m_pen）;
//画线条
dc.MoveTo(your position1);
dc.LineTo(your position2);
dc.SelectObject(pOldPen);

Answer 3

在OnPaint(CDC *dc)函数中
CPen *m_pen;
CPoint first,second;
m_pen.CreatePen(PS_SOLID,2,RGB(255,0,0));
CPen *pOldPen=dc.SelectObject（m_pen）;//画线条
dc.MoveTo(first);
dc.LineTo(second);
dc.SelectObject(pOldPen);
delete m_pen;

Answer 4

CPen NewPen, *pOldPen;
NewPen.CreatePen(PS_SOLID, m_pWidth, m_pColor);
pOldPen = pDC->SelectObject(&NewPen);
pDC->MoveTo(m_pStart);
pDC->LineTo(m_pEnd);
pDC->SelectObject(pOldPen);通过设置m_pColor变量就可以画不同颜色的线了
m_pColor的类型是COLORREF