http://forum.codejock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Thu, 21 May 2026 05:35:59 +0000 Thu, 05 Jan 2012 12:16:59 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 forum.codejock.com/RSS_post_feed.asp?TID=19386 http://forum.codejock.com/forum_images/codejock-logo.gif http://forum.codejock.com/ http://forum.codejock.com/forum_posts.asp?TID=19386&PID=67337&title=constant-line-in-chart-control#67337 Author: maestro1914
Subject: 19386
Posted: 05 January 2012 at 12:16pm

I seem to be able to handle click events and recognize which Chart Control component I am clicking. But, when ever I click the ConstantLine component I don't seem to be able to recognize it. I am using the below code to as a proof of concept in order to test being able to register a click on different components:

void CLineView::OnChartClick(NMHDR* /*pNMHDR*/, LRESULT* /*pResult*/){
     CPoint cursorPoint;
     GetCursorPos(&cursorPoint);
     m_wndChartControl.ScreenToClient(&cursorPoint);

    CXTPChartElement* chartElement = m_wndChartControl.HitTest(cursorPoint);
    CXTPChartTitleCollection* titleCollection = m_wndChartControl.GetContent()->GetTitles();

    CString text = "Default Text";

    if (titleCollection->GetCount() == 0)
        titleCollection->Add(new CXTPChartTitle());

    if (DYNAMIC_DOWNCAST(CXTPChartSeries, chartElement)){
          CXTPChartSeries* series = (CXTPChartSeries*)chartElement;
        text = series->GetName();
     } else if (DYNAMIC_DOWNCAST(CXTPChartAxisConstantLine, chartElement)){
          CXTPChartAxisConstantLine* trackLine = (CXTPChartAxisConstantLine*)chartElement;
        text = "Success";
    } else if (DYNAMIC_DOWNCAST(CXTPChartLegend, chartElement)){
          CXTPChartLegend* trackLine = (CXTPChartLegend*)chartElement;
        text = "Legend";
    }

    titleCollection->GetAt(0)->SetText(text);
}

My ultimate goal is to be able to register a click on the constant line and then be able to drag it across a chart in order to get the x,y values of a series at the constant line.
]]> Thu, 05 Jan 2012 12:16:59 +0000 http://forum.codejock.com/forum_posts.asp?TID=19386&PID=67337&title=constant-line-in-chart-control#67337