DestoyWindow Does Not Work In Release Mode

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I am destroying GraphView Window Created By Me On Clear Button,
Code Works Fine In Debug Mode But Crashes In Release Mode.
Please Help

C++

if(IsWindow(objTabCalibrationResult->m_pGraph->m_hWnd))
           objTabCalibrationResult->m_pGraph->DestroyWindow();

Posted 12-Feb-13 20:16pm

adityarao31

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Comments

Richard MacCutchan 13-Feb-13 4:51am

This needs a lot more detail; we cannot guess from the above what may be happening.

adityarao31 13-Feb-13 9:34am

If I remove these two line code works absolutely fine in release mode also

Richard MacCutchan 13-Feb-13 11:28am

Well, there's your solution.

adityarao31 13-Feb-13 13:03pm

But I require to clear graph

Richard MacCutchan 13-Feb-13 13:24pm

Well you need to provide a lot more details of what you are trying to do and what your code is doing. As it stands we cannot guess what is going on.

Binu MD 14-Feb-13 0:48am

Please give deatils like
1) clear button is placed on parent window or graph window.
2) Why are you try to destroy window instead of clearing.
3) What is your requirement clear window or destroy window.
etc..

adityarao31 14-Feb-13 2:22am

Clear button is placed on parent button in ehich above code is written.
Requirement of application is to remove total graphview on clear button.
Is there any function like clearwindow?

Binu MD 14-Feb-13 3:37am

You can use Invalidate() or FillRect() functions to clear the graph.

adityarao31 14-Feb-13 3:25am

Actually i got the problem.In my code some times I require to delete graph,but that tine graph is not existing so I kept condition OF IsWindow,but it seems is window crashes
I dont know how to fix problem? or I have to keep track by boolean variable like
IsGraphExist. Is there any other way I can know If graph view exist.

Binu MD 14-Feb-13 3:39am

One more thing

Confirm that IsWindow() is called from the thread, that created the GraphView.

adityarao31 14-Feb-13 3:45am

Thank you very much for your time and effort

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adityarao31 · Accepted Answer · 2013-02-13T21:45:00

Solution 1

My Problem got solved by using IsBadReadPtr Function.I thanks to every one who tried to solve the problem

C++

if(!::IsBadReadPtr(m_pGraph,1))
    if(IsWindow(m_pGraph->m_hWnd))
        m_pGraph->DestroyWindow();
}

Posted 13-Feb-13 21:45pm

adityarao31

Comments

CPallini 14-Feb-13 4:34am

You may find interesting this documentation page:
http://msdn.microsoft.com/en-us/library/windows/desktop/aa366713(v=vs.85).aspx

Richard MacCutchan 14-Feb-13 4:59am

If you just want to clear the client area of the Window, then you should set a flag, or clear all the data of the graph, then use InvalidateWindow(). Then in your paint function you should check if a graph exists and do nothing if there is no data. That will automatically clear the graph from the window.