[vtk-developers] QVTKWidgetPlugin debug/release versions on Windows

[Andrew Maclean]

I tried out the "d"postfix, and it sems to work Ok, but does not fix my problem!

This is probably me but there is something I don't understand.

1) I have copied the release version of QVTKWidgetPlugin.dll to
%QT_PATH%\plugins\designer and it appears Ok in designer. Note that
the debug build of this dll will not even register in designer.

2) I take SimpleView in the VTK/EXamples/QT and it builds OK - no
problems. I am building it in Visual Studio 9. CMake finds everything,
no errors, no warnings.

When I run the release version in Visual Studio or from a command
prompt, it runs Ok.
However when I run the debug version either from Visual Studio or from
a command prompt, the instantiation fails at the line:
    vtkWidget = new QVTKWidget(centralWidget);
ui_uiSimpleView4.h
With a message: "QWidget: Must construct a QApplication before a QPaintDevice"

Why isn't QVTKWidget able to be used when building debug versions of
the executable?
Why won't the debug version of QVTKWidgetPlugin.dll register in designer?

I am using QT-4.3.4. Vista, Visual Studio Version 9.

Andrew



On Tue, Aug 5, 2008 at 2:11 PM, Clinton Stimpson <clinton at elemtech.com> wrote:
>
> Probably no one else has tried to do that.  They either copy the plugin into
> the Qt designer plugin directory, or don't use a debug version of the Qt
> designer.
>
> Adding a "d" postfix is fine with me.
>
> Clint
>
> On Aug 4, 2008, at 9:51 PM, Andrew Maclean wrote:
>
>> When using Windows, how do developers handle the problem of debug and
>> release versions of QVTKWidgetPlugin.dll?
>> The issue I have is that I have release versions of the library in my
>> path and consequently when I set QT_PLUGIN_PATH="C:\Program
>> Files\VTK\plugins" of course, it only picks up one version, namely the
>> release version.
>>
>> Does anyone see any problems modifing:
>> IF(NOT VTK_NO_LIBRARY_VERSION)
>>  SET(VTK_LIBRARY_PROPERTIES ${VTK_LIBRARY_PROPERTIES}
>>    VERSION "${VTK_VERSION}"
>>    SOVERSION "${VTK_MAJOR_VERSION}.${VTK_MINOR_VERSION}"
>>    )
>> ENDIF(NOT VTK_NO_LIBRARY_VERSION)
>>
>> to
>> IF(NOT VTK_NO_LIBRARY_VERSION)
>>  SET(VTK_LIBRARY_PROPERTIES ${VTK_LIBRARY_PROPERTIES}
>>    VERSION "${VTK_VERSION}"
>>    SOVERSION "${VTK_MAJOR_VERSION}.${VTK_MINOR_VERSION}"
>>    DEBUG_POSTFIX "d"
>>    )
>> ENDIF(NOT VTK_NO_LIBRARY_VERSION)
>>
>> Which will add a "d" postfix to the debug versions of the libraries?
>>
>> Thanks in advance for any comments
>>
>> Andrew.
>>
>> --
>> ___________________________________________
>> Andrew J. P. Maclean
>> Centre for Autonomous Systems
>> The Rose Street Building J04
>> The University of Sydney 2006 NSW
>> AUSTRALIA
>> Ph: +61 2 9351 3283
>> Fax: +61 2 9351 7474
>> URL: http://www.acfr.usyd.edu.au/
>> ___________________________________________
>> _______________________________________________
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>
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-- 
___________________________________________
Andrew J. P. Maclean
Centre for Autonomous Systems
The Rose Street Building J04
The University of Sydney 2006 NSW
AUSTRALIA
Ph: +61 2 9351 3283
Fax: +61 2 9351 7474
URL: http://www.acfr.usyd.edu.au/
___________________________________________