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GetRange crash

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yangyanhui View Drop Down
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    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
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yangyanhui View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote yangyanhui Quote  Post ReplyReply Direct Link To This Post Posted: 08 December 2020 at 9:48pm
I can confirm that the coordinate is in the area of the chartctrl. PointToValue crashes.
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yangyanhui View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote yangyanhui Quote  Post ReplyReply Direct Link To This Post 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
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Post Options Post Options   Thanks (0) Thanks(0)   Quote yangyanhui Quote  Post ReplyReply Direct Link To This Post 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.
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yangyanhui View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote yangyanhui Quote  Post ReplyReply Direct Link To This Post 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
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