int CMcdCtrl::Mcd(int a, int b)
{
if(b==0){
return a;
}
return Mcd(b,a%b);
}
void CMcdCtrl::OnDraw(
CDC* pdc, const CRect& rcBounds, const CRect& rcInvalid)
{
// TODO: Replace the following code with your own drawing code.
/*
pdc->FillRect(rcBounds, CBrush::FromHandle((HBRUSH)GetStockObject(WHITE_BRUSH)));
pdc->Ellipse(rcBounds);
*/
//设置控件的背景颜色
CBrush brush(RGB(255,255,0));
pdc->FillRect(&rcBounds,&brush);
//设置圆的背景色黑色
CBrush brush2(RGB(0,200,0));
CBrush* pOldBursh=pdc->SelectObject(&brush2);
//设置圆心位置
POINT p1 = {30,120};
POINT p2 = {200,p1.y};
POINT p3 = { (p1.x+p2.x)/2 , m_direction?(p1.y+60):p1.y-60 };
// 开始画圆
pdc->Ellipse(p1.x-15,p1.y-15,p1.x+15,p1.y+15);
pdc->Ellipse(p2.x-15,p2.y-15,p2.x+15,p2.y+15);
pdc->Ellipse(p3.x-15,p3.y-15,p3.x+15,p3.y+15);
//划线
pdc->MoveTo(p1);
pdc->LineTo(p3);
pdc->LineTo(p2);
//写入数字
pdc->SetBkMode(TRANSPARENT);
pdc->SetTextAlign(TA_CENTER);
pdc->SetTextColor(RGB(255,255,255));
CString strInfo;
strInfo.Format("%d",m_a);
pdc->TextOut(p1.x,p1.y-10,strInfo);
strInfo.Format("%d",m_b);
pdc->TextOut(p2.x,p2.y-10,strInfo);
strInfo.Format("%d",Mcd(m_a,m_b));
pdc->TextOut(p3.x,p3.y-10,strInfo);
}
void CMcdCtrl::OnDraw(
CDC* pdc, const CRect& rcBounds, const CRect& rcInvalid)
{
//1 设置控件的背景色
CBrush brush(RGB(255,255,0));
pdc->FillRect(&rcBounds,&brush);
//2 设置圆的背景色
CBrush brush2(RGB(0,0,0));
CBrush *pOldBrush=pdc->SelectObject(&brush2);
//3 设置圆心位置
POINT p1={30,120};
POINT p2={190,p1.y};
POINT p3={(p1.x+p2.x)/2,
m_direction?p1.y-60:p1.y+60};
int r=15;//半径
//4 画圆
pdc->Ellipse(p1.x-r,p1.y-r,p1.x+r,p1.y+r);
pdc->Ellipse(p2.x-r,p2.y-r,p2.x+r,p2.y+r);
pdc->Ellipse(p3.x-r,p3.y-r,p3.x+r,p3.y+r);
//5 画圆的连接线
pdc->MoveTo(p1);
pdc->LineTo(p3);
pdc->LineTo(p2);
//6 设置文本的对齐方式，颜色和背景颜色
pdc->SetTextAlign(TA_CENTER);
pdc->SetTextColor(RGB(255,255,255));
pdc->SetBkMode(TRANSPARENT);
//7 输出数值
CString strInfo;
strInfo.Format("%d",m_a);
pdc->TextOut(p1.x,p1.y-9,strInfo);
strInfo.Format("%d",m_b);
pdc->TextOut(p2.x,p2.y-9,strInfo);
strInfo.Format("%d",Mcd(m_a,m_b));
pdc->TextOut(p3.x,p3.y-9,strInfo);
}
