Solved QCustomPlot saveJpg not working on all computers
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Hello all
I use QCustomPlot for diagrams and I am really happy with it. On my developing machines the export of Jpg does work fine. But on the PCs of my colleagues, it produces a 0byte file (but with correct name)
Has anyone met such a problem too?
Thomas
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Hi,
Did you deploy the application on your colleague's machine ?
If so how did you do it ?
Did you check that you have also the image formats plugins deployed ? -
Hi thanks for such a quick response.
I have deployed the software by InnoSetup, including all the libraries. Are there special libraries needed for qcustomplot that I can include?
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Did you use windeployqt to prepare the files before making the installer with InnoSetup ?
Jpeg support has nothing to with QCustomPlot unless they wrote their own version.
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I never heard of or used windeployqt.
That is new o me - I will try. Any tipps on how to make it easy fo a newbie?
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I used it and it created some .ddl files. are those the ones I need to include in InnoSetup?
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If you put your executable in an empty folder and call
windeplyoqt
in it, it should give you a functional application with all dependencies needed that you can pack with InnoSetup. -
That's what I did, but the saveJpeg still does not work.
windeployqt generated a lot of files which I completely included into the InnoSetup process and they all are installed.
Included are files like qjpeg.dll or qico.dll which I assume as the libraries that were missing.Is there a chance to rtreive an error message when QCustomPlot can't export correctly because of a missing dll?
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Do the imageformats/*.dll have to be in exactly that folder or in the system folder of windows?
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Don't put anything in the system folder, that's very bad practice.
The layout of the folders besides your application is described in the documentation I linked before.
windeployqt
should be doing the right job in that regard.