VTK integration issue in QML at runtime on Windows

Winz 0

I don’t have any problems on linux, but on windows, when I instantiate a simple QQuickVTKItem item, it compiled well but I get the following error at runtime:

QQmlApplicationEngine failed to load component
qrc:/qt/qml/minVtkQml/Main.qml:10:5: Cannot assign object to list property “data”

Has anyone ever had the problem? ? I can’t find a way to debug

win10/msvc2019/ninja/Qt6.7.2 and Qt6.7.3 and VTK 9.3 compiled with -DVTK_GROUP_ENABLE_Qt:STRING=YES

main.cpp

#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include <QQuickVTKItem.h>

int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);
    qmlRegisterType<QQuickVTKItem>           ("Test", 1, 0, "Vtk");

    QQmlApplicationEngine engine;

    QObject::connect(
        &engine,
        &QQmlApplicationEngine::objectCreationFailed,
        &app,
        []() { QCoreApplication::exit(-1); },
        Qt::QueuedConnection);
    engine.loadFromModule("minVtkQml", "Main");

    return app.exec();
}

Main.qml

import QtQuick
import Test 1.0

Window {
    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World")

    Vtk{

    }
}

CMakeLists.txt

cmake_minimum_required(VERSION 3.16)

project(minVtkQml VERSION 0.1 LANGUAGES CXX)

set(CMAKE_CXX_STANDARD_REQUIRED ON)

find_package(Qt6 6.7 REQUIRED COMPONENTS Quick)

set(VTK_DIR "../VTK/bin/lib/cmake/vtk-9.3/")
find_package(VTK REQUIRED)

qt_standard_project_setup(REQUIRES 6.7)

qt_add_executable(appminVtkQml
    main.cpp
)

qt_add_qml_module(appminVtkQml
    URI minVtkQml
    VERSION 1.0
    QML_FILES        Main.qml
)

# Qt for iOS sets MACOSX_BUNDLE_GUI_IDENTIFIER automatically since Qt 6.1.
# If you are developing for iOS or macOS you should consider setting an
# explicit, fixed bundle identifier manually though.
set_target_properties(appminVtkQml PROPERTIES
#    MACOSX_BUNDLE_GUI_IDENTIFIER com.example.appminVtkQml
    MACOSX_BUNDLE_BUNDLE_VERSION ${PROJECT_VERSION}
    MACOSX_BUNDLE_SHORT_VERSION_STRING ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}
    MACOSX_BUNDLE TRUE
    WIN32_EXECUTABLE TRUE
)

target_link_libraries(appminVtkQml PRIVATE
    Qt${QT_VERSION_MAJOR}::Quick
    ${VTK_LIBRARIES}
)

vtk_module_autoinit( TARGETS appminVtkQml MODULES ${VTK_LIBRARIES} )

include(GNUInstallDirs)
install(TARGETS appminVtkQml
    BUNDLE DESTINATION .
    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
)

Winz 0

This error appears because I was running a Debug target with a Release version of VTK. No problem if you link a Debug app with a Debug VTK or Release app with a Release VTK.