I have created a Qt5 application with Visual Studio (2019). When I compile and launch the application, everything goes well but if I try to launch it by hand, in other words by double clicking on the .exe file and not by clicking on 'Local Windows Debugger', I get errors like:
error
For the translation: "Unable to execute the code, because QtWidgetsd.dll is not found. Reinstalling the program may fix this problem. problem". I get 3 messages each time with QtWidgetsd.dll, QtCored.dll, QtGuid.dll that are missing.
So I copied the .dll from Qt/5.15.2/msvc2019_64/bin But another error appears:
error2
I have been searching for a long time, reinstalling visual studio, changing the qt5 configuration in VS but nothing changes.

Thanks in advance for any help you can provide

CodePudding user response：

There are two possible solutions:

First solution

Use windeployqt to copy all the required dlls. But I don't like this solution.

Second solution

Use Cmake correctly to link the dlls you can do that by adding these lines to your CMakeLists.txt file:

find_package(Qt5 COMPONENTS Widgets REQUIRED) # Add all used qt packages
target_link_libraries(CMAKE_PROJECT_NAME PUBLIC Qt5::Widgets) # Add all used libraries.