How to deploy QML Application with QtCharts module by using windeployqt

LCVitality

I wanna package my application by using windeployqt, however, the charts components didnt show up.
I already tried to copy QtCharts folder and Qt6Charts.dll manully like what I did with Qt5, but it didnt work.
The Qt version is 6.2.0, anybody can help?

FeRDNYC

@LCVitality QtCharts is a Qt add-on, and as such doesn't appear to be directly supported by windeployqt. (I'm basing that on the fact that it isn't listed as an "available library" by winqtdeploy --help, even when it's installed in the Qt build being deployed:

After installing Qt 6.2.1, both MSVC and MinGW, using the online installer...

C:\> cd Qt\6.2.1\msvc2019_64\bin
C:\Qt\6.2.1\msvc2019_64\bin>set PATH=%cd%:%PATH%
C:\Qt\6.2.1\msvc2019_64\bin>windeployqt.exe --help
# [...]
Qt libraries can be added by passing their name (-xml) or removed by passing
the name prepended by --no- (--no-xml). Available libraries:
bluetooth concurrent core declarative designer designercomponents gamepad gui
qthelp multimedia multimediawidgets multimediaquick network nfc opengl
openglwidgets positioning printsupport qml qmltooling quick quickparticles
quickwidgets script scripttools sensors serialport sql svg svgwidgets test
websockets widgets winextras xml webenginecore webengine webenginewidgets 3dcore
3drenderer 3dquick 3dquickrenderer 3dinput 3danimation 3dextras geoservices
webchannel texttospeech serialbus webview shadertools

Meanwhile, in a MinGW64 bash shell...

$ cd /C/Qt/6.2.1/mingw81_64/bin
$ export PATH=$(pwd):$PATH
$ ./windeployqt.exe --help
# [...]
Qt libraries can be added by passing their name (-xml) or removed by passing
the name prepended by --no- (--no-xml). Available libraries:
bluetooth concurrent core declarative designer designercomponents gamepad gui
qthelp multimedia multimediawidgets multimediaquick network nfc opengl
openglwidgets positioning printsupport qml qmltooling quick quickparticles
quickwidgets script scripttools sensors serialport sql svg svgwidgets test
websockets widgets winextras xml webenginecore webengine webenginewidgets 3dcore
3drenderer 3dquick 3dquickrenderer 3dinput 3danimation 3dextras geoservices
webchannel texttospeech serialbus webview shadertools

(...I have no idea why webengine, webenginecore, and webenginewidgets are listed there — it would've been a major coup if they were available in MinGW Qt6, but I triple-checked and they are, in fact, not. Which must mean that the windeployqt library list is hardcoded, not actually generated to reflect the installed components as I'd hoped/assumed. Laaaaame.)

Still, no Charts listed on its disappointingly-hardcoded list of supported libraries.

LCVitality

@FeRDNYC Thanks for reply.
I understand QtCharts is not supported by windeployqt.
In Qt5, after

windeployqt path/to/executable.exe --qmldir path/to/qml

I need to copy QtCharts folder and Qt5Charts.dll to the directory of the executable.exe, then run the executable, QtCharts works well.
I did the same thing in Qt6, but it didnt work.
I wanna know is there any approch works for Qt6?
Thanks again.

anitsch

I have the same problem...
Were you able to resolve the problem?
I'm on Qt 6.2.4, QtCharts is installed with the MaintenanceTool, but

windeployqt.exe does not recognise QtCharts as a dependency
It can't be added manually with -qtcharts or - charts
Manually copying the .dll and the Folder from the qml folder does not work

xyzwei

I solved it,but I am not sure if Qt engineer upgraded windeployqt.exe.
I'm on Qt 6.3.1,msvc2019_64.
The windeployqt.exe can create QtCharts libraries directly (QtCharts folder ,Qt6Charts.dll and Qt6ChartsQml.dll).
And copy folder and dll still doesn't work.

I guess, many people use windeployqt.exe incorrectly.
If you can run your qml program with Qtcharts module in VS or Qcreater, it could create library by windeployqt.exe.

windeployqt path/to/executable.exe --qmldir path/to/qml

The qmldir path should be your progarm‘s qml’s folder instead of qt‘s or qtcreator’s folder.
My folder include main.qml, such as

windeployqt D:\C++\test\x64\Release\test.exe --qmldir D:\C++\test\test\

instead of

windeployqt D:\C++\test\x64\Release\test.exe --qmldir D:Qt\Qt6.3.1\msvc2019_64\qml

Developer123

@xyzwei Wow, indeed this seems to work.

It's amazing how poorly documented everything in QT is .. even the forums give mostly wrong/partial answers and you need to waste hours just to find the ones that work.

By the way, the final command that worked for me, in case anyone needs, is:

windeployqt --release --qmldir C:\path\to\project executable.exe

QSaker

@xyzwei Nice!!!!!!!!!!!!!!!!

Vlogo11

@Developer123 hi! im using qt with a .pro file and mingw. i dont have a qml file. what can i do? i have the same problem

FeRDNYC

@Vlogo11 What do you mean you "have the same problem"? What problem do you have? Have you even built your application yet?

(Because, the fact that you're using a .pro file should be irrelevant, windeployqt is run on the .exe file that results from building your application. Whether you're using CMake or qmake, you need to generate a build system and compile your application before you can do anything with windeployqt.)

Once you have an application executable, just run windeployqt myapplication.exe on the compiled program. If you don't have any QML then you don't even need to worry about --qmldir at all.