Chart Control - GetRange crash

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GetRange crash

Printed From: Codejock Forums
Category: Codejock Products
Forum Name: Chart Control
Forum Description: Topics Related to Codejock Chart Control
URL: http://forum.codejock.com/forum_posts.asp?TID=24114
Printed Date: 29 April 2024 at 9:09am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: GetRange crash

Posted By: yangyanhui
Subject: GetRange crash
Date Posted: 08 December 2020 at 12:55am

CXTPChartContent* pContent = GetContent();

CXTPChartSeriesCollection* pCollection = pContent->GetSeries();

CXTPChartDiagram2D* pDiagram = DYNAMIC_DOWNCAST(CXTPChartDiagram2D, pCollection->GetAt(0)->GetDiagram());

double internalValueX = ((CXTPChartDiagram2DAxisView*)pDiagram->GetAxisX()->GetAxisView())->PointToValue(pt.x);

I use these code in mousemove event. It crashes after I move my mouse several times. What may cause it?

thanks

Replies:

Posted By: yangyanhui
Date Posted: 08 December 2020 at 9:48pm

I can confirm that the coordinate is in the area of the chartctrl. PointToValue crashes.

Posted By: yangyanhui
Date Posted: 08 December 2020 at 11:36pm

when I move slowly.It works well,when I move the mouse fast,it will crash which is very strange

Posted By: yangyanhui
Date Posted: 09 December 2020 at 3:03am

I add sleep(50) after PointToValue. It works but there is a track shows where the mouse moved as it is not validated in time.

Posted By: yangyanhui
Date Posted: 17 December 2020 at 2:02am

I find the reason. It is because I execute pDiagram->GetAxisX()->GetRange()->GetViewMaxValue(); when I move the mouse. I now need to disable onmousemove when I zoom the range because I need to exeute PointToValue in mousemove event.How can i realize it,mutex does not work