[solved]QGraphicsPolygonItem vc2010(32bit) QT5.4 crash

mmkider

Hi
I am new guy
I try and run "diagram Scene Example" of qt demo, but I get a crash.
I guess what's wrong with this QGraphicsPolygonItem.

Use vc2010 and window 7 platform and Qt 5.4.

Package : Qt 5.4.0 for Windows 32-bit (VS 2010, OpenGL, 625 MB)

Thank you for your answer

mmkider

I try this package
Qt 5.4.0 for Android (Windows 32-bit, 935 MB) (info)

and choice mingw compiler

It is fine.

mmkider

Does anyone know what happened?
Thank you for responce

SGaist

Hi and welcome to devnet,

What does a run through the debugger tell you ?

mmkider

I only drag and drop Conditional button into main widget, and I get a error.

"Qt Creator Debug info Screenshot ":http://f.sync.hamicloud.net/_oops/@DOCVIEW?oops_id=mmkider&oops_link=qtc&download_key=d41d8cd98f00b204e9800998ecf8427e&name=QGraphicsPolygon_Crash.png

"Qt Creator Debug info Screenshot2":http://f.sync.hamicloud.net/_oops/@DOCVIEW?oops_id=mmkider&oops_link=hrq&download_key=d41d8cd98f00b204e9800998ecf8427e&name=QGraphicsPolygon_Crash2.png
Thank you :)

SGaist

Can you describe what you do exactly to trigger the crash ?

mmkider

Hi~

I trigger conditional button and click mouse in the main widget.
then I get the crash.

Thank you :)

SGaist

Looks like something windows specific, can't reproduce this on OS X. Do you have the latest OpenGL drivers installed for your machine ?

mmkider

Hi

I try the latest OpenGL drivers for NVIDIA GeForce GT630M.
Package: " 347.52-notebook-win8-win7-64bit-international-whql.exe.":http://www.nvidia.com/download/driverResults.aspx/81879/en-us

But I got the same.
"Qt Creator Debug info Screenshot3":http://f.sync.hamicloud.net/_oops/@DOCVIEW?oops_id=mmkider&oops_link=rf6&download_key=d41d8cd98f00b204e9800998ecf8427e&name=QGraphicsPolygon_Crash3.png

Thank you for response.

SGaist

Are you running a release build ?

mmkider

Hi
I try run release version,then got the same(crash).

"Qt Creator Debug info Screenshot4
":http://f.sync.hamicloud.net/_oops/@DOCVIEW?oops_id=mmkider&oops_link=elc&download_key=d41d8cd98f00b204e9800998ecf8427e&name=QGraphicsPolygon_Crash4.png

Thank you for response.

mmkider

Fixed this issue at the Qt 5.4.1
version：qt-opensource-windows-x86-msvc2010_opengl-5.4.1

:)

SGaist

Good but out of curiosity: were you also starting both the debug and release version from explorer ?

mmkider

Yes,
Release and debug version of "diagram Scene Example" work fine.

:>

SGaist

Starting an application from explorer requires the same deployment phase as you would need to distribute your application.

Qt Creator modifies the run environment so that you are sure to be using the correct Qt version when running an application you just built.

mmkider

[quote author="SGaist" date="1424942222"]Starting an application from explorer requires the same deployment phase as you would need to distribute your application.

Qt Creator modifies the run environment so that you are sure to be using the correct Qt version when running an application you just built.
[/quote]

Thank your recommend,I will use this suggest on future.
I just learning Qt now, so I remove old version(Qt 5.4), and install Qt 5.4.1。

:)