[vtkusers] VTK and QT Projects (QVTKWidget.h)

Mon Aug 2 10:19:52 EDT 2010

Hello Alex,

Did you build your VTK with shared libs (BUILD_SHARED_LIBS) on? I had the
same problems like you and could only run my vtk-qt-program in debug or
release mode. If I want to switch between modes, I had to recompile VTK in
the according mode with an additional install run e.g. To run my program in
release mode è compilation in Release and run install; To run in debug mode
è compilation in Debug and run install. I resolved it by turn off the shared
libs option in CMake (a finally rebuilding of VTK is necessary).

Hope that helps,

Best regards, Rocco

Von: vtkusers-bounces at vtk.org [mailto:vtkusers-bounces at vtk.org] Im Auftrag
von Alex Southern
Gesendet: Montag, 2. August 2010 15:59
An: vtkusers at vtk.org
Betreff: Re: [vtkusers] VTK and QT Projects (QVTKWidget.h)

I solved my problem.... almost,

basically despite having a working application in VS 2008, I decided to use
my source files to build a new one using cmake. For future reference the
file is below, although a word of warning.....

I included the WIN32 option (in ADD_EXECUTABLE) in order to stop the console
window appearing in addition to my gui. Upon compilation this caused 2
linker errors, I stopped both of these by adding qtmain.lib to the linker's
additional dependencies. This solved the problem BUT I'm sure that Cmake
should be doing this for me, so the cmakelists file is probably missing
something.

Secondly, The project only runs in Release Mode !!, I did some digging and
this has something to do with QT dll conflicts. The output window shows that
it is loading both the release and debug versions of Qtcore4.dll Qtgui4.dll
(Qtcored4.dll Qtguid4.dll) as of yet I dont know how stop this....

Any ideas?

Cmake file below
---------------------------------------
cmake_minimum_required(VERSION 2.8)

PROJECT(WaveModellerVTK)

FIND_PACKAGE(VTK)
INCLUDE(${VTK_USE_FILE}) # include UseVTK.cmake

FIND_PACKAGE(Qt4 REQUIRED)
INCLUDE(${QT_USE_FILE})  # include UseQt4.cmake

# support for out-of-source build
INCLUDE_DIRECTORIES(
  ${CMAKE_CURRENT_BINARY_DIR}
  ${CMAKE_CURRENT_SOURCE_DIR}
)

# Set your files and resources here
SET(WMSrcs main.cpp wavemodeller.cpp nodfile.cpp newproject.cpp)
SET(WMUI wavemodeller.ui newproject.ui)
SET(WMqrc wavemodellericons.qrc)
SET(WMHeaders wavemodeller.h nodFile.h newproject.h)

QT4_WRAP_UI(UISrcs ${WMUI})
QT4_ADD_RESOURCES(UIico ${WMqrc})
QT4_WRAP_CPP(MOCSrcs ${WMHeaders} )

SOURCE_GROUP("Resources" FILES
  ${WMUI}

)

SOURCE_GROUP("Generated" FILES
  ${UISrcs}
  ${MOCSrcs}
#  ${RCS_SOURCES}
)

ADD_EXECUTABLE( WaveModellerVTK WIN32 ${WMSrcs} ${UIico} ${WMUI} ${MOCSrcs})
TARGET_LINK_LIBRARIES( WaveModellerVTK QVTK )

-------------------------------------------------------------

On 30.7.2010 23:08, Darshan Pai wrote: 

Hi Alex,

you should probably include the QVTKWidget.h that is present in your bin
folder rather than the source folder . The reason is that when you compile
VTK with GUISupport it generates a moc file for the widget which is saved in
the bin folder and will be needed for QT .

Regards
Darshan

On Fri, Jul 30, 2010 at 12:19 PM, Alex Southern <mrapsouthern at gmail.com>
wrote:

Hi,

QT has been working fine up until I try to compile a gui with a
vtkwidgetplugin in. However just in case it does matter, yes I beleive I
did.

In Project->Properties->C/C++->Additional Include Directories...
".\GeneratedFiles;"$(QTDIR)\include";".\GeneratedFiles\$(ConfigurationName)"
;"$(QTDIR)\include\qtmain";"$(QTDIR)\include\QtCore";"$(QTDIR)\include\QtGui
";.\

In Project->Properties->Linker->Additional Library Directories...
"$(QTDIR)\lib"

QTDIR has been set in the Environment Variables in My
Computer->Properties->Advanced etc

In Project->Properties->Linker->Additional Dependencies...
qtmaind.lib QtCored4.lib QtGuid4.lib $(NOINHERIT)

Although like I said the QT stuff works fine, If I remove the VTKwidget and
try to compile the app it works perfectly.

Cheers
Alex

On 30.7.2010 19:08, Bobby Ren wrote: 

did you add the qt include directory into your additional includes folders
list under the project settings? 

On Fri, Jul 30, 2010 at 11:59 AM, Alex Southern <mrapsouthern at gmail.com>
wrote:

Hi,

(Not sure if I should post this here, but I think its a VTK thing rather
than QT)

I'm sure this must be straight forward....

I have been using QT to make a project in VS 2008 Pro, Windows 7. All going
well and then I want to add in the VTK rendering window....

Note: Yes, I installed QT first and  waited a couple of hours for it to
build from source, then I installed VTK using cmake with the required,
VTK_USE_QT and VTK_GUISUPPORT, everything eventually installed fine, cmake
found the QT installation no problem and then QT demos in VTK examples work
fine.

I copy the QVTKwidgetplugin.dll compiled by VTK over to the
C:/QT/4.6.3/plugins/designer folder. The vtk widget shows up in the widgets
box in QT designer when running through Visual Studio and standalone.

I then return to my QT project, open QT designer and add the vtkwidget to my
desired Tab. Save All. Exit QT Designer.

Then I try to compile the project and I am presented with  "Cannot open
include file: 'QVTKWidget.h': No such file or directory".

Note: I should add that my VTK installation is fine, my VTK projects still
compile an run no problem.

The file exists in the VTK build folder C:\VTK\include\vtk-5.6

So Im sure this has something to do with the fact the project was never
setup for VTK usage and I need to include the path somehow. Although I have
had no luck so far.

Any suggestions please???

Thanks
Alex

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