# EventQtSlotConnectDriver

VTKExamples/Cxx/Qt/EventQtSlotConnectDriver

### Code

EventQtSlotConnectDriver.cxx

    #include <QApplication>
    #include <QSurfaceFormat>
    #include "EventQtSlotConnect.h"

    int main(int argc, char** argv)
    {
      // needed to ensure appropriate OpenGL context is created for VTK rendering.
      QSurfaceFormat::setDefaultFormat(QVTKOpenGLWidget::defaultFormat());

      QApplication app(argc, argv);

      EventQtSlotConnect eventQtSlotConnect;
      eventQtSlotConnect.show();

      return app.exec();
    }

### CMakeLists.txt

    cmake_minimum_required(VERSION 2.8)

    if(POLICY CMP0020)
      cmake_policy(SET CMP0020 NEW)
    endif()

    PROJECT(EventQtSlotConnectDriver)

    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(EventQtSlotConnectDriver MACOSX_BUNDLE
        ${CXX_FILES} ${UISrcs} ${QT_WRAP})
      qt5_use_modules(EventQtSlotConnectDriver Core Gui)
      target_link_libraries(EventQtSlotConnectDriver ${VTK_LIBRARIES})
    else()
      QT4_WRAP_UI(UISrcs ${UI_FILES})
      QT4_WRAP_CPP(MOCSrcs ${QT_WRAP})
      add_executable(EventQtSlotConnectDriver MACOSX_BUNDLE ${CXX_FILES} ${UISrcs} ${MOCSrcs})
      target_link_libraries(EventQtSlotConnectDriver ${VTK_LIBRARIES})
    endif()

### Download and Build EventQtSlotConnectDriver

Click here to download EventQtSlotConnectDriver and its CMakeLists.txt file. Once the tarball EventQtSlotConnectDriver.tar has been downloaded and extracted,

     cd EventQtSlotConnectDriver/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:

    ./EventQtSlotConnectDriver

WINDOWS USERS

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.