unable to show pixmap using qrc file

yav12

I have added an image to a qrc file, and want to show it instead of using the absolute path, but it doesnt seem to want to work no matter what I try. Using the absolute path works fine but trying to reference the qrc doesnt work at all.
the project file structure is like this:

└── zzz-optimizer/
    ├── window.h
    ├── window.ui
    ├── main.cpp
    ├── assets.qrc
    ├── window.cpp
    ├── CMakeLists.txt
    └── assets/
        └── discs/
            └── DawnsBloom.png

The qrc looks like this:

<RCC>
    <qresource prefix="/discs">
        <file alias="DawnsBloom.png">assets/discs/DawnsBloom.png</file>
    </qresource>
</RCC>

In qt designer, it shows up just fine, but the actual application shows nothing (designer vs build):

how can i make this work?

SGaist

Hi,

You either need to add set(CMAKE_AUTORCC ON) or use qt_add_resources.

See here

Christian Ehrlicher

Do you add the qrc to your executable? Also which path do you use for the image? It's :/discs/DawnsBloom.png

yav12

i did, the qrc is referenced in the cmakelists.txt, and it is using that path:

Christian Ehrlicher

@yav12 said in unable to show pixmap using qrc file:

he qrc is referenced in the cmakelists.txt

Please show the CMakeLists.txt
Also look what's really inside your qrc during runtime with

QDirIterator it(":", QDirIterator::Subdirectories);
while (it.hasNext())
    qDebug() << it.next();

yav12

my cmakelists.txt looks like this:

cmake_minimum_required(VERSION 3.19)
project(zzz-optimizer LANGUAGES CXX)

find_package(Qt6 6.5 REQUIRED COMPONENTS Core Widgets)

qt_standard_project_setup()

qt_add_executable(zzz-optimizer
   WIN32 MACOSX_BUNDLE
   main.cpp
   window.cpp
   window.h
   window.ui
   assets.qrc
)

target_link_libraries(zzz-optimizer
   PRIVATE
       Qt::Core
       Qt::Widgets
)

include(GNUInstallDirs)

install(TARGETS zzz-optimizer
   BUNDLE  DESTINATION .
   RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
   LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
)

qt_generate_deploy_app_script(
   TARGET zzz-optimizer
   OUTPUT_SCRIPT deploy_script
   NO_UNSUPPORTED_PLATFORM_ERROR
)
install(SCRIPT ${deploy_script})

Also look what's really inside your qrc

i placed this code in, and a LOT of files showed up (it took a couple minutes to finish printing everything) but not my file in the qrc

SGaist

Hi,

You either need to add set(CMAKE_AUTORCC ON) or use qt_add_resources.

See here

yav12

ohhhh i see. I added it to the CMakeLists.txt and now it works as expected.
Thank you :D