c++ - 如何找到 Teechart 图和 Teechart Canvas 的顶部/左侧和顶部/右侧？

Question

我正在尝试找出客户端坐标中所有四个角的 Teechart 控件和图形 Canvas 。

有谁知道返回所有四个角的 Canvas 坐标的 Teechart API？

谢谢

Answer 1

要确定图表在窗体中的位置，您可以使用 .Left 和 .Top 图表属性。同理，可以使用ChartRect获取TChart Corners。请看下面的代码:

// CDraggingDlg message handlers

BOOL CDraggingDlg::OnInitDialog()
{
….
    CDialog::OnInitDialog();
    // Extra initialization
    m_ctrlChart.RemoveAllSeries();

    m_ctrlChart.GetAspect().SetView3D(false);
    m_ctrlChart.AddSeries(scLine);
    m_ctrlChart.Series(0).FillSampleValues(100); 
    return TRUE;
}

std::string text; 

void CDraggingDlg::OnAfterDrawTChart() 
{

    // Draw a white circle around the clicked pyramid...

    CTeeRect r = m_ctrlChart.GetGetChartRect();
    long recwidth, recheight, posLeft, posTop; 

    int BottomLCornerX,BottomLCornerY, BottomRCornerX, BottomRCornerY, TopLCornerX, TopLCornerY, TopRCornerX, TopRCornerY;
    std::string s1, s2, s3; 

    //Get Width
    recwidth = (r.GetRight()- r.GetLeft()); 
    recheight = (r.GetBottom()-r.GetTop()); 

    //GetPosition
    posLeft =   m_ctrlChart.GetLeft(); 
    posTop = m_ctrlChart.GetTop(); 

    //CalculateCorners
    BottomLCornerX = r.GetLeft();
    BottomLCornerY = r.GetBottom(); 
    BottomRCornerX = r.GetRight(); 
    BottomRCornerY = r.GetBottom(); 
    TopLCornerX = r.GetLeft(); 
    TopLCornerY = r.GetTop(); 
    TopRCornerX = r.GetRight; 
    TopRCornerY = r.GetTop(); 
    //Visualization Values
    s1 = "Position Chart :" + std::to_string(posLeft) + "," + std::to_string(posTop); 
    s2 = "Chart Rect Positons: Left " + std::to_string(r.GetLeft()) + " Top " + std::to_string(r.GetTop()) + " Right " + std::to_string(r.GetRight()) + " Bottom " + std::to_string(r.GetBottom());
    s3 = "Chart Rect Corners: BottomLeft  " + std::to_string(BottomLCornerX) + "," + std::to_string(BottomLCornerY) + " BottomRight " + std::to_string(BottomRCornerX) + "," +
    std::to_string(BottomRCornerY) + "\n TopLeft  " + std::to_string(TopLCornerX) + "," + std::to_string(TopLCornerY) + " TopRight " + std::to_string(TopRCornerX) + "," + std::to_string(TopRCornerY); 
    text = s1 + "\n" + s2 +"\n"+s3 ;
}
void CDraggingDlg::OnButton1()
{MessageBox(text.c_str()); }