QtQuickControls version
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Hi there!!,
I'm developing a ground station in Qt, using both C++ and QML files. I use the QML files to implement a map. The problem is that, following the Map Viewer example, when dynamically creating menu items and connecting the "Triggered" signals with other functions, the latest versions of QtQuickControls give runtime errors, while older version run without errors. As an example, the following lines:
Menu { .... function update() { clear() addItem(qsTr("Add Marker")).triggered.connect(function(){itemClicked("addMarker")}) .... } }With QtQuickControls 2.12 the errors are:
ReferenceError: clear is not defined TypeError: Cannot read property 'triggered' of undefinedUsing QtQuickControls 1.4 I get no errors. Can someone help me understand the reason?
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@DavidPL Hi,
QtQuickControls 1.x and 2.x are two different API. Most of time you cannot switch between these versions without modifying your code.
If you see documentation of Menu from QtQuickControls 2.x you will see that indeed
clear()doesn't exist. -
Can you loop?:
for(var item in menuId){ menuId.removeItem(item) }I cannot find clear() method in Menu (QtQuick.Controls 1.4) documentation. So I am not sure exactly what clear does.
Edit:
I also don't know if its safe to modify a list I am looping through in javascript. Is it? -
@fcarney said in QtQuickControls version:
for(var item in menuId){
menuId.removeItem(item)
}Don't do this. It does a lot more than I expected. I did this:
for(var item in menu1){ console.log(item) menu1.removeItem(item) }The output is kinda scary:
qml: objectName qml: x qml: y qml: z qml: width qml: height qml: implicitWidth qml: implicitHeight qml: contentWidth qml: contentHeight qml: availableWidth qml: availableHeight qml: margins qml: topMargin qml: leftMargin qml: rightMargin qml: bottomMargin qml: padding qml: topPadding qml: leftPadding qml: rightPadding qml: bottomPadding qml: locale qml: font qml: parent qml: background qml: contentItem qml: contentData qml: contentChildren qml: clip qml: focus qml: activeFocus qml: modal qml: dim qml: visible qml: opacity qml: scale qml: closePolicy qml: transformOrigin qml: enter qml: exit qml: spacing qml: opened qml: mirrored qml: enabled qml: palette qml: horizontalPadding qml: verticalPadding qml: anchors qml: implicitContentWidth qml: implicitContentHeight qml: implicitBackgroundWidth qml: implicitBackgroundHeight qml: topInset qml: leftInset qml: rightInset qml: bottomInset qml: contentModel qml: contentData qml: title qml: count qml: cascade qml: overlap qml: delegate qml: currentIndex qml: objectNameChanged qml: opened qml: closed qml: aboutToShow qml: aboutToHide qml: xChanged qml: yChanged qml: zChanged qml: widthChanged qml: heightChanged qml: implicitWidthChanged qml: implicitHeightChanged qml: contentWidthChanged qml: contentHeightChanged qml: availableWidthChanged qml: availableHeightChanged qml: marginsChanged qml: topMarginChanged qml: leftMarginChanged qml: rightMarginChanged qml: bottomMarginChanged qml: paddingChanged qml: topPaddingChanged qml: leftPaddingChanged qml: rightPaddingChanged qml: bottomPaddingChanged qml: fontChanged qml: localeChanged qml: parentChanged qml: backgroundChanged qml: contentItemChanged qml: contentChildrenChanged qml: clipChanged qml: focusChanged qml: activeFocusChanged qml: modalChanged qml: dimChanged qml: visibleChanged qml: opacityChanged qml: scaleChanged qml: closePolicyChanged qml: enterChanged qml: exitChanged qml: windowChanged qml: spacingChanged qml: openedChanged qml: mirroredChanged qml: enabledChanged qml: paletteChanged qml: horizontalPaddingChanged qml: verticalPaddingChanged qml: implicitContentWidthChanged qml: implicitContentHeightChanged qml: implicitBackgroundWidthChanged qml: implicitBackgroundHeightChanged qml: topInsetChanged qml: leftInsetChanged qml: rightInsetChanged qml: bottomInsetChanged qml: open qml: close qml: forceActiveFocus qml: forceActiveFocus qml: titleChanged qml: countChanged qml: cascadeChanged qml: overlapChanged qml: delegateChanged qml: currentIndexChanged qml: itemAt qml: addItem qml: insertItem qml: moveItem qml: removeItem qml: takeItem qml: menuAt qml: addMenu qml: insertMenu qml: removeMenu qml: takeMenu qml: actionAt qml: addAction qml: insertAction qml: removeAction qml: takeAction qml: popup qml: dismissSo, yeah, don't do that.
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@Gojir4 said in QtQuickControls version:
for(var item in menu1.contentData){
That one removes every other item on first pass. I had tried that one.
menu1.contentData = []
Doesn't seem to do anything.
This works:
while(menu1.count){ menu1.removeItem(0) }
