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QML_ENGINE.md

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QML engine:

The QML engine enables nelson programs to display and manipulate graphical content using Qt's QML framework.

  qml_demos % for demonstrations

qml_demos screenshot

checkboxes screenshot

Interacting with Nelson

Interaction with Nelson happens through the following mechanisms:

  • Call Nelson functions from QML,
    Button {
        text: "Button"
        anchors.centerIn: parent
        onClicked: nelson.disp('button pressed.')
        objectName: "myButton"
    }
  • Read and set context properties from Nelson and QML.
>> h1 = errordlg()

h1 =

  1×1 handle [QObject]

	__maximumDimension: int 927
	className: WidgetMessageDialog_QMLTYPE_115
	clickedButton: int 0
	detailedText: QString
	height: int 0
	icon: int 0
	informativeText: QString
	isWindow: bool true
	modality: int 0
	objectName: QString
	standardButtons: int 1024
	standardIconSource: QUrl
	text: QString This is the default error string.
	title: QString Error Dialog
	visible: bool true
	width: int 0
	x: int 0
	y: int 0

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