VC中利用MFC设计绘图程序初步(3)
//画带边线的扇型 void CDrawView::OnMouseMove(UINT nFlags, CPoint point) { if ( m_bDraw ) { CClientDC dc(this) ; CPen pen( PS_SOLID , 1 , RGB(255,128,128) ); CPen *pOldPen = dc.SelectObject(pen);
//画带边线的扇型
void CDrawView::OnMouseMove(UINT nFlags, CPoint point)
{
if ( m_bDraw )
{
CClientDC dc(this) ;
CPen pen( PS_SOLID , 1 , RGB(255,128,128) );
CPen *pOldPen = dc.SelectObject(&pen);
dc.MoveTo(m_ptOrigin);
dc.LineTo(m_ptOld);
dc.MoveTo(m_ptOrigin);
dc.LineTo(point);
dc.MoveTo(m_ptOld);
dc.LineTo(point);
m_ptOld = point ;
dc.SelectObject(pOldPen);
}
CView::OnMouseMove(nFlags, point);
}
void CDrawView::OnMouseMove(UINT nFlags, CPoint point)
{
if ( m_bDraw )
{
CClientDC dc(this) ;
CPen pen( PS_SOLID , 1 , RGB(255,128,128) );
CPen *pOldPen = dc.SelectObject(&pen);
dc.MoveTo(m_ptOrigin);
dc.LineTo(m_ptOld);
dc.MoveTo(m_ptOrigin);
dc.LineTo(point);
dc.MoveTo(m_ptOld);
dc.LineTo(point);
m_ptOld = point ;
dc.SelectObject(pOldPen);
}
CView::OnMouseMove(nFlags, point);
}
//看看绘图的模式设置方法
void CDrawView::OnMouseMove(UINT nFlags, CPoint point)
{
if ( m_bDraw )
{
CClientDC dc(this) ;
dc.SetROP2(R2_BLACK); //绘图的模式设置,始终绘制黑色图形
CPen pen( PS_SOLID , 1 , RGB(255,128,128) );
CPen *pOldPen = dc.SelectObject(&pen);
dc.MoveTo(m_ptOrigin);
dc.LineTo(m_ptOld);
dc.MoveTo(m_ptOrigin);
dc.LineTo(point);
dc.MoveTo(m_ptOld);
dc.LineTo(point);
m_ptOld = point ;
dc.SelectObject(pOldPen);
}
CView::OnMouseMove(nFlags, point);
}
到此，我们知道了一般地绘图方法了。
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