CPoint问题，等效的表述，画图不一样不知道为什么？

[qq_35088622]

int i=0;
CPoint m_pt=0;
void CMmkView::OnTimer(UINT nIDEvent) 
{
// TODO: Add your message handler code here and/or call default
CView::OnTimer(nIDEvent);
CClientDC dc(this);
 if(i<3600)
{
dc.MoveTo(m_pt);
dc.LineTo(i/5,i/5);
m_pt=(i/5,i/5);
i+=5;
}
}
画完图为什么和下面不一样？
int i=0;
CPoint m_pt=0;
void CMmkView::OnTimer(UINT nIDEvent) 
{
// TODO: Add your message handler code here and/or call default
CView::OnTimer(nIDEvent);
CClientDC dc(this);
 if(i<3600)
{
dc.MoveTo(m_pt);
dc.LineTo(i/5,i/5);
m_pt.x=i/6;
m_pt.y=i/6;
i+=5;
}

[大漠飞狐]

CPoint 不支持浮点，要用浮点，只能用 .net 来画图。 如果坚持要用CPOINT，也可以把浮点转换成整数来画

[chen_JADE]

m_pt=(i/5,i/5); 和 m_pt.x=i/6; m_pt.y=i/6; 结果不一样。

[schlafenhamster]

/5 /6 是整数 除 ，用 浮点 i/6.0

[shen_wei]

BOOL LineTo(
   int x,
   int y 
);
BOOL LineTo(
   POINT point 
);

[Eleven]

你绘图的代码最好还是放到OnPaint/OnDraw() 函数中去做~

[阳光110]

CPoint ptUndefined; CPoint ptTopLeft(0,0); // works from a POINT, too POINT ptHere; ptHere.x = 35; ptHere.y = 95; CPoint ptMFCHere(ptHere); // works from A SIZE SIZE sHowBig; sHowBig.cx = 300; sHowBig.cy = 10; CPoint ptMFCBig(sHowBig); // or from a DWORD DWORD dwSize; dwSize = MAKELONG(35, 95); CPoint ptFromDouble(dwSize); ASSERT(ptFromDouble == ptMFCHere);

[阳光110]

m_pt = CPoint(i/5,i/5); m_pt.x = i/5; m_pt.y = i/5;

[jacksonfan]

i/5， i/6当然不一样