the qml file dialog caused the problem.couldnt find the reason.

nicker player

 FileDialog {
        id: fileDialog
        title: ""
        folder: shortcuts.home 
        selectExisting: true
        onAccepted: {
            console.log("You chose: " + fileDialog.fileUrl.toString(
                            )) 
            let t_filename_act = fileDialog.fileUrl.toString()

            let t_view_path = fileDialog.folder.toString()
            let t_view_path_t = t_view_path.substr(8, t_view_path.length - 8)
            let t_view_file = fileDialog.fileUrl.toString().split('/').pop(
                    ).toString()
            for (var i = 0; i < global_selected_files.length; i++) {

                console.log("t_view_pathi", global_selected_files[i])
                if (global_selected_files[i] === t_filename_act) {
                    return
                }
            }

            let t_linevalue = getShortFilepath(96, t_view_path_t, t_view_file)

            modelData.append({
                                 "linename": t_linevalue.toString(),
                                 "linevalue": t_filename_act.toString()
                             })
            global_selected_files.push(t_filename_act)
            let t_files_count = modelData.count

            labelTitle.text = global_title + " - " + t_files_count + " FILES"
            if (global_saved_file === "default_none"
                    || global_saved_file === undefined) {
                global_saved_file = t_linevalue.toString()
                labelTips.text = " Saved file into: " + global_saved_file.toString()
            }
        }
        onRejected: {
            console.log("Canceled") 
        }
        visible: false
    }

the modelData was used by the

ListView {
    model: ListModel {
            id: modelData
    }
}

file:///D:/program/qt/5.14.1/msvc2017/qml/QtQuick/Controls/Styles/Desktop/TableViewStyle.qml:109:13: Unable to assign QQmlListModel to QString
file:///D:/program/qt/5.14.1/msvc2017/qml/QtQuick/Controls/Styles/Desktop/TableViewStyle.qml:109:13: Unable to assign QQmlListModel to QString
file:///D:/program/qt/5.14.1/msvc2017/qml/QtQuick/Controls/Styles/Desktop/TableViewStyle.qml:109:13: Unable to assign QQmlListModel to QString
file:///D:/program/qt/5.14.1/msvc2017/qml/QtQuick/Controls/Styles/Desktop/TableViewStyle.qml:109:13: Unable to assign QQmlListModel to QString
file:///D:/program/qt/5.14.1/msvc2017/qml/QtQuick/Controls/Styles/Desktop/TableViewStyle.qml:109:13: Unable to assign QQmlListModel to QString
file:///D:/program/qt/5.14.1/msvc2017/qml/QtQuick/Controls/Styles/Desktop/TableViewStyle.qml:109:13: Unable to assign QQmlListModel to QString
file:///D:/program/qt/5.14.1/msvc2017/qml/QtQuick/Dialogs/DefaultFileDialog.qml:385:29: Unable to assign QQmlListModel to QString
file:///D:/program/qt/5.14.1/msvc2017/qml/QtQuick/Dialogs/DefaultFileDialog.qml:385:29: Unable to assign QQmlListModel to QString
file:///D:/program/qt/5.14.1/msvc2017/qml/QtQuick/Dialogs/DefaultFileDialog.qml:362:29: Unable to assign QQmlListModel to QString
file:///D:/program/qt/5.14.1/msvc2017/qml/QtQuick/Dialogs/DefaultFileDialog.qml:362:29: Unable to assign QQmlListModel to QString
file:///D:/program/qt/5.14.1/msvc2017/qml/QtQuick/Dialogs/DefaultFileDialog.qml:362:29: Unable to assign QQmlListModel to QString

jsulm

@nicker-player said in the qml file dialog caused the problem.couldnt find the reason.:

file:///D:/program/qt/5.14.1/msvc2017/qml/QtQuick/Controls/Styles/Desktop/TableViewStyle.qml:109:13

So what is in this line?

nicker player

@jsulm

property Component itemDelegate: Item {
       height: Math.max(16, label.implicitHeight)
       property int implicitWidth: label.implicitWidth + 16

       Text {
           id: label
           objectName: "label"
           width: parent.width
           font: __styleitem.font
           anchors.left: parent.left
           anchors.right: parent.right
           anchors.leftMargin: styleData.hasOwnProperty("depth") && styleData.column === 0 ? 0 :
                               horizontalAlignment === Text.AlignRight ? 1 : 8
           anchors.rightMargin: (styleData.hasOwnProperty("depth") && styleData.column === 0)
                                || horizontalAlignment !== Text.AlignRight ? 1 : 8
           horizontalAlignment: styleData.textAlignment
           anchors.verticalCenter: parent.verticalCenter
           elide: styleData.elideMode
           text: styleData.value !== undefined ? styleData.value : ""  // here it is !
           color: styleData.textColor
           renderType: Text.NativeRendering
       }
   }

JonB

@nicker-player
@jsulm asked you what line is:

file:///D:/program/qt/5.14.1/msvc2017/qml/QtQuick/Controls/Styles/Desktop/TableViewStyle.qml:109:13

So he is expecting you to tell him which is line #109. If you just paste the whole delegate how can we know which is line #109? Please think about providing the necessary information to help others help you.

nicker player

Ive just marked the line109

text: styleData.value !== undefined ? styleData.value : ""

nicker player

@nicker-player
by the way when i was used the icon from the qrc path it also give me a tip whats below

QPainter::begin: Paint device returned engine == 0, type: 2
QWidget::render: Cannot render with an inactive painter
QPainter::begin: Paint device returned engine == 0, type: 3
QPainter::setCompositionMode: Painter not active
QPainter::end: Painter not active, aborted
QPainter::begin: Paint device returned engine == 0, type: 3
ASSERT: "img.format() == QImage::Format_ARGB32_Premultiplied || img.format() == QImage::Format_RGB32 || img.format() == QImage::Format_Indexed8 || img.format() == QImage::Format_Grayscale8" in file effects\qpixmapfilter.cpp, line 705
QBackingStore::endPaint() called with active painter; did you forget to destroy it or call QPainter::end() on it?

JonB

@nicker-player
I see that now, I did not notice it (if it was there) when I posted originally.

I know nothing about QML, but

file:///D:/program/qt/5.14.1/msvc2017/qml/QtQuick/Controls/Styles/Desktop/TableViewStyle.qml:109:13: Unable to assign QQmlListModel to QString

looks to me like styleData.value is an actual QQmlListModel? Which obviously cannot be converted to a string. So, however you do it in QML, what it is the bound value (or its type) in whatever cell in your table?