cpen函数用法——菜鸟求救
void CCh4_CutOutView::ShowLineSeg(CPoint BPoint, CPoint EPoint)
{
CClientDC dc(this);
dc.SetROP2(R2_NOT);
CPen pen(PS_SOLID, 1, RGB(255,0,0));//1是笔的宽度, RGB是宏, 用于生成颜色
dc.SelectObject(&pen);
dc.MoveTo(BPoint);
dc.LineTo(EPoint);
}
用这个函数实现画线,不知道哪里错了