VTK/Examples/Cxx/Qt/RenderWindowNoUiFile

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Description

This is a very basic example that shows how to create a Qt window. Typically, one would want to design a form in the QtDesigner (this is shown in RenderWindowUi)

Qt-RenderWindowNoUiFile.png

RenderWindowNoUiFile.cxx

#include <QApplication>
 
#include <vtkSmartPointer.h>
#include <vtkSphereSource.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
 
#include <QVTKWidget.h>
 
int main(int argc, char** argv)
{
  QApplication app(argc, argv);
 
  QVTKWidget widget;
  widget.resize( 256, 256 );
 
  vtkSmartPointer<vtkSphereSource> sphereSource =
      vtkSmartPointer<vtkSphereSource>::New();
 
  vtkSmartPointer<vtkPolyDataMapper> sphereMapper =
      vtkSmartPointer<vtkPolyDataMapper>::New();
  sphereMapper->SetInputConnection( sphereSource->GetOutputPort() );
 
  vtkSmartPointer<vtkActor> sphereActor =
      vtkSmartPointer<vtkActor>::New();
  sphereActor->SetMapper( sphereMapper );
 
  vtkSmartPointer<vtkRenderer> renderer =
      vtkSmartPointer<vtkRenderer>::New();
  renderer->AddActor( sphereActor );
 
  widget.GetRenderWindow()->AddRenderer( renderer );
  widget.show();
 
  app.exec();
 
  return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 2.8)
 
if(POLICY CMP0020)
  cmake_policy(SET CMP0020 NEW)
endif()
 
PROJECT(RenderWindowNoUiFile)
 
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
 
if(${VTK_VERSION} VERSION_GREATER "6" AND VTK_QT_VERSION VERSION_GREATER "4")
  # Instruct CMake to run moc automatically when needed.
  set(CMAKE_AUTOMOC ON)
  find_package(Qt5Widgets REQUIRED QUIET)
else()
  find_package(Qt4 REQUIRED)
  include(${QT_USE_FILE})
endif()
 
include_directories(${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR})
 
file(GLOB UI_FILES *.ui)
file(GLOB QT_WRAP *.h)
file(GLOB CXX_FILES *.cxx)
 
if(${VTK_VERSION} VERSION_GREATER "6" AND VTK_QT_VERSION VERSION_GREATER "4")
  qt5_wrap_ui(UISrcs ${UI_FILES} )
  # CMAKE_AUTOMOC in ON so the MOC headers will be automatically wrapped.
  add_executable(RenderWindowNoUiFile MACOSX_BUNDLE
    ${CXX_FILES} ${UISrcs} ${QT_WRAP})
  qt5_use_modules(RenderWindowNoUiFile Core Gui)
  target_link_libraries(RenderWindowNoUiFile ${VTK_LIBRARIES})
else()
  QT4_WRAP_UI(UISrcs ${UI_FILES})
  QT4_WRAP_CPP(MOCSrcs ${QT_WRAP})
  add_executable(RenderWindowNoUiFile MACOSX_BUNDLE ${CXX_FILES} ${UISrcs} ${MOCSrcs})
 
  if(VTK_LIBRARIES)
    if(${VTK_VERSION} VERSION_LESS "6")
      target_link_libraries(RenderWindowNoUiFile ${VTK_LIBRARIES} QVTK)
    else()
      target_link_libraries(RenderWindowNoUiFile ${VTK_LIBRARIES})
    endif()
  else()
    target_link_libraries(RenderWindowNoUiFile vtkHybrid QVTK vtkViews ${QT_LIBRARIES})
  endif()
endif()

Download and Build RenderWindowNoUiFile

Click here to download RenderWindowNoUiFile. and its CMakeLists.txt file.

Once the tarball RenderWindowNoUiFile.tar has been downloaded and extracted,

cd RenderWindowNoUiFile/build

This example requires Qt and VTK.

  • If VTK and Qt are installed:
cmake ..
  • If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:
cmake -DVTK_DIR:PATH=/home/me/vtk_build ..
  • If Qt is not found on your system, you will need to tell CMake where to find qmake:
cmake -DQT_QMAKE_EXECUTABLE:FILEPATH=/usr/something/qmake  ..

Build the project:

make

and run it:

./RenderWindowNoUiFile

WINDOWS USERS PLEASE NOTE: Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time. You may also need to add a Qt related path.