I'm building a DLL which creates an FBO from a QT window, I have the dll outputting error logs to a file and I keep getting this: Invalid property assignment: color expected on the following QML: import QtQuick 2.15 Item { Rectangle { id: rectangle x: 0 y: 0 width: 614 height: 376 color: "#00aa00" Text { id: text1 text: qsTr("Text") } Image { id: image x: 16 y: 56 width: 100 height: 100 source: "qrc:/qtquickplugin/images/template_image.png" fillMode: Image.PreserveAspectFit } } } This displays as expected in QT creator, but brings up error in my DLL. If I remove the line "color: "#00aa00" everything works correctly. Any idea on what I could possibly be doing wrong here?

@ Lord-Bytor said in Invalid property assignment error in DLL but not QT creator : used DLL's "LibEGL, QICore, etc..." from qt\5.15.2\msvc2019_64\bin Did you use windeployqt ? See also https://wiki.qt.io/Deploy_an_Application_on_Windows

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Invalid property assignment error in DLL but not QT creator

Moved Unsolved QML and Qt Quick

21 Posts 3 Posters 3.7k Views 2 Watching

J JKSH

@Lord-Bytor said in Invalid property assignment error in DLL but not QT creator:

maybe in how Unity takes in DLLs

I just remembered: You Unity app's working directory is probably different from your DLL's location, so Qt can't find the QML modules. If you want to check, record the results of QDir::currentPath() from your DLL and from your small window example app.

Anyway, call QQmlEngine::addImportPath() to tell Qt where to find the QML modules: https://stackoverflow.com/questions/35352930/qt5-qml-module-is-not-installed/49326965#49326965
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Lord Bytor

wrote on last edited by Lord Bytor

#21

@JKSH Well, progress in that I'm getting a new error "Cannot load library D:\Dev\UnityProjects\QT experiment\Assets\Plugins\QtQuick.2\qtquick2plugin.dll: The specified module could not be found" that dll is present at that exact location though

Edit: Dependency walker shows it needs QT5Quick.dll, QT5Core etc... but those are all in its parent folder as produced by windeployqt
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