qtqtquick2qt-quickqtquickcontrolsqtquickcontrols2

import QtQuick.Controls 2.0 not working - QQmlApplicationEngine failed to load component

I have an app that its project generated using CMake in Qt5.7, so when import QtQuick.Controls 2.0 application failed to load with the following error:

plugin cannot be loaded for module "QtQuick.Controls": Cannot load library C:\Qt\Qt5.7.0\5.7\msvc2015\qml\QtQuick\Controls.2\qtquickcontrols2plugind.dll: The specified module could not be found.

CMakeLists.txt

set(CMAKE_PREFIX_PATH "C:\\Qt\\Qt5.7.0\\5.7\\msvc2015")
set(CMAKE_AUTOMOC ON) 
set(CMAKE_AUTORCC ON) 
set(CMAKE_AUTOUIC ON)
set(CMAKE_INCLUDE_CURRENT_DIR ON)

find_package(Qt5Core REQUIRED)
find_package(Qt5Qml) 
find_package(Qt5Quick) 
find_package(Qt5QuickControls2)

...

add_executable(MyApp ${SRC} ${HEADER} ${RESOURCES})

target_link_libraries(MyApp
Qt5::WinMain    
Qt5::Core   
Qt5::Qml    
Qt5::Quick  
Qt5::QuickControls2     
)

The DLL file loaded in visual studio output:

'MyApp.exe' (Win32): Loaded 'C:\Qt\Qt5.7.0\5.7\msvc2015\qml\QtQuick.2\qtquick2plugind.dll'. Symbols loaded.
'MyApp.exe' (Win32): Loaded 'C:\Qt\Qt5.7.0\5.7\msvc2015\qml\QtQuick\Controls.2\qtquickcontrols2plugind.dll'. Symbols loaded.
'MyApp.exe' (Win32): Unloaded 'C:\Qt\Qt5.7.0\5.7\msvc2015\qml\QtQuick\Controls.2\qtquickcontrols2plugind.dll'
Solution

  • I found the solution, The problem is QtQuick.Controls 2.0 depends on QtQuick.Templates 2.0 module so I have copied its dll to output directory and it runs successfully.

    required DLLs (for Debug version):

    Qt5QuickTemplates2d.dll
Qt5QuickControls2d.dll

    required DLLs (for Release version):

    Qt5QuickTemplates2.dll
Qt5QuickControls2.dll