The application is running in the background but the screen does not appear

[jsulm]

@serkan_tr You still do not say whether you deployed your app or not. Simply copying the executable to a computer without Qt will not work...

[J.Hilk]

@serkan_tr @jsulm is probably on the correct path.

can you post the command you used for the windeployqt program ?

and/or can you post a screenshot of the folder containing your "deployed" executable ?

[serkan_tr]

@J-Hilk
windeployqt --qmldir qml C:\ems\build-Rovercopter-UKB-Desktop_Qt_5_15_2_MSVC2019_64bit-Release

image of the compiled file

[serkan_tr]

@jsulm
I created it with the windeployqt command

[serkan_tr]

@serkan_tr build folder running on old computer

[J.Hilk]

@serkan_tr ok first of, thank you! Quick and detailed answer

You have tons of unneeded files int hat folder. I would suggest copying the executable and only the executable in a folder and using that clean folder for the deployment tool.

also since you're using MSVC, execute the qtenv2.bat in the command line terminal prior the windeployqt tool.

it will kick you out of the dev folder so make sure to provide full paths to the target executable and the qml folder of the project

I'm seeing vcruntime140.dll in your folder. that is 100% not from the tool but manually copied ;)

don't do that! Install vc c++ distributable on the target pc separately.
https://aka.ms/vs/17/release/vc_redist.x64.exe

[serkan_tr]

@J-Hilk @jsulm Thanks for your help. The app is huge and complex so it's a bit difficult to do things exactly. I will try to do what you say.
"I'm seeing vcruntime140.dll in your folder. that is 100% not from the tool but manually copied ;)" I want it to copy some files in cmake can it be copying parts
main cmake code :

install(
    TARGETS QGroundControl
    DESTINATION ${CMAKE_BINARY_DIR}
)
install(
    DIRECTORY ${CMAKE_SOURCE_DIR}/resources/
    DESTINATION ${CMAKE_BINARY_DIR}/qgroundcontrol
)
install(
    FILES ${CMAKE_SOURCE_DIR}/deploy/org.mavlink.qgroundcontrol.desktop
    DESTINATION ${CMAKE_BINARY_DIR}/applications
)
install(
    FILES ${CMAKE_SOURCE_DIR}/resources/icons/qgroundcontrol.png
    DESTINATION ${CMAKE_BINARY_DIR}/icons/hicolor/128x128/apps/
    RENAME org.mavlink.qgroundcontrol.png
)
install(
    FILES ${CMAKE_SOURCE_DIR}/deploy/org.mavlink.qgroundcontrol.metainfo.xml
    DESTINATION ${CMAKE_BINARY_DIR}/metainfo/
)
install(
    DIRECTORY C:/Qt/5.15.2/msvc2019_64/qml
    DESTINATION ${CMAKE_BINARY_DIR}/
)


install(
    FILES C:/Qt/5.15.2/msvc2019_64/bin/Qt5QuickControls2.dll
        DESTINATION ${CMAKE_BINARY_DIR}/
)
install(
    FILES C:/Qt/5.15.2/msvc2019_64/bin/Qt5MultimediaQuick.dll
        DESTINATION ${CMAKE_BINARY_DIR}/
)
install(
    FILES C:/Qt/5.15.2/msvc2019_64/bin/Qt5QuickControls2.dll
        DESTINATION ${CMAKE_BINARY_DIR}/
)

install(
    FILES C:/Qt/5.15.2/msvc2019_64/bin/Qt5QuickShapes.dll
        DESTINATION ${CMAKE_BINARY_DIR}/
)
install(
    FILES C:/Qt/5.15.2/msvc2019_64/bin/Qt5QmlWorkerScript.dll
        DESTINATION ${CMAKE_BINARY_DIR}/
)
install(
    FILES C:/Qt/5.15.2/msvc2019_64/bin/Qt5RemoteObjects.dll
        DESTINATION ${CMAKE_BINARY_DIR}/
)

install(
    FILES C:/Qt/5.15.2/msvc2019_64/bin/Qt5QmlWorkerScript.dll
        DESTINATION ${CMAKE_BINARY_DIR}/
)

if I don't install this part " qrc:/qml/MainRootWindow.qml:14:1: module "QtQuick.Window" is not installed
qrc:/qml/MainRootWindow.qml:13:1: module "QtQuick.Layouts" is not installed
qrc:/qml/MainRootWindow.qml:12:1: module "QtQuick.Dialogs" is not installed
qrc:/qml/MainRootWindow.qml:11:1: module "QtQuick.Controls" is not installed
qrc:/qml/MainRootWindow.qml:14:1: module "QtQuick.Window" is not installed
qrc:/qml/MainRootWindow.qml:13:1: module "QtQuick.Layouts" is not installed
qrc:/qml/MainRootWindow.qml:12:1: module "QtQuick.Dialogs" is not installed
qrc:/qml/MainRootWindow.qml:11:1: module "QtQuick.Controls" is not installed
qrc:/qml/MainRootWindow.qml:14:1: module "QtQuick.Window" is not installed
qrc:/qml/MainRootWindow.qml:13:1: module "QtQuick.Layouts" is not installed
qrc:/qml/MainRootWindow.qml:12:1: module "QtQuick.Dialogs" is not installed
qrc:/qml/MainRootWindow.qml:11:1: module "QtQuick.Controls" is not installed
qrc:/qml/MainRootWindow.qml:14:1: module "QtQuick.Window" is not installed
qrc:/qml/MainRootWindow.qml:13:1: module "QtQuick.Layouts" is not installed
qrc:/qml/MainRootWindow.qml:12:1: module "QtQuick.Dialogs" is not installed
qrc:/qml/MainRootWindow.qml:11:1: module "QtQuick.Controls" is not installed" errors

(QGroundControl.exe:10656): GStreamer-WARNING **: 16:45:20.352: Failed to load plugin 'C:\gstreamer\1.0\msvc_x86_64\lib\gstreamer-1.0\gstassrender.dll': The specified module could not be found.
This usually means Windows was unable to find a DLL dependency of the plugin. Please check that PATH is correct.
You can run 'dumpbin -dependents' (provided by the Visual Studio developer prompt) to list the DLL deps of any DLL.
There are also some third-party GUIs to list and debug DLL dependencies recursively.

[SimonSchroeder]

@serkan_tr said in The application is running in the background but the screen does not appear:

The settings and versions I made on the old computer are all the same, the only difference is that I was using qt creator 9.0.1 on the old computer and I was using qt creator 10.0.1 on the new computer.

Are you making sure to use the same compiler version of MSVC on both computers? Is the same Windows Kit version used on both systems?

[Christian Ehrlicher]

@serkan_tr said in The application is running in the background but the screen does not appear:

C:\gstreamer\1.0\msvc_x86_64\lib\gstreamer-1.0\gstassrender.dll': The specified module could not be found.
This usually means Windows was unable to find a DLL dependency of the plugin. Please check that PATH is correct.

I mean this message is obvoius enough. You're missing some dependencies for this dll on your target machine. Use Depency Walker or Dependencies Gui to see what's missing.

[J.Hilk]

@serkan_tr said in The application is running in the background but the screen does not appear:

I want it to copy some files in cmake can it be copying parts

In general, I'm sure cmake offers post/pre processing options to copy files around. But I'm no cmake expert and can't help you here.

---

The AI gave this answer:
You can use the add_custom_command function in CMake to copy files after the compilation is done. Here is an example of how to copy the contents of a directory into the build directory after make with CMake:

add_custom_command(TARGET ${PROJECT_NAME} POST_BUILD COMMAND ${CMAKE_COMMAND} -E copy_directory ${CMAKE_SOURCE_DIR}/config $<TARGET_FILE_DIR:${PROJECT_NAME}>/config)

This command will copy the contents of ${CMAKE_SOURCE_DIR}/config into ${PROJECT_NAME}'s build directory. If you want to copy the directory itself instead of the contents, you can add /${FOLDER_NAME} to the end of the second parameter.

Here is another example that shows how to copy or move libs after build with CMake:

add_subdirectory(gtest-1.6.0)
add_custom_command(TARGET gtest_main POST_BUILD COMMAND ${CMAKE_COMMAND} -E copy ${SRC_LIB_DIR}/*.a ${DST_LIB_DIR})

This command will copy all .a files from ${SRC_LIB_DIR} into ${DST_LIB_DIR}.

You can find more information about custom commands in CMake in this link.

Quelle: Unterhaltung mit Bing, 26.5.2023
(1) How to copy contents of a directory into build directory after make .... https://stackoverflow.com/questions/13429656/how-to-copy-contents-of-a-directory-into-build-directory-after-make-with-cmake.
(2) Copy or move libs after build with cmake - Stack Overflow. https://stackoverflow.com/questions/15405600/copy-or-move-libs-after-build-with-cmake.
(3) Custom Commands — Mastering CMake. https://cmake.org/cmake/help/book/mastering-cmake/chapter/Custom Commands.html.

[serkan_tr]

@SimonSchroeder yes, all versions are the same on both computers.
i guess i solved the problem