Drag and Drop

Overview

ChartObject supports full Motif drag and drop functionality (Note: drag and drop is not supported under X11R4/Motif1.1). One can drag and drop cells from a table widget into a chart object, data from a chart object into another chart object, etc. It is also possible to establish links using drag and drop between a table and a chart object or between two chart objects.

EditObject action MotifStartDrag controls the drag operation. It is connected using the following translation:

    <Btn2Down>: MotifStartDrag()

There is no specific action defined for dropping objects. The drop operation is activated automatically on a button release.

Drag and Drop operations can be disabled by setting EditObject resources XmNallowDrag and XmNallowDrop to False. Also, callback XmNdragDropCallback is invoked on both drag and drop operations and can be used to selectively enable or disable either drag or drop operations.

Summary

The following table summarizes the default behavior for drag and drop. Note: if there is a key sequence in the translation, it is important that the keys remain pressed until the drag and drop operation has been completed and the button has been released.

Key Sequence Drag Source Drop Site Description
<Btn2Down>: Chart object EditObject Moves the chart to the specified location.
Ctrl <Btn2Down>: Chart object EditObject Copies the chart to the specified location.
Ctrl Shift <Btn2Down> Chart object EditObject Copies the chart to the specified location and makes a link between the two.
<Btn2Down> Chart object Chart object Moves the data from the source chart to the destination chart.
Ctrl <Btn2Down> Chart object Chart object Copies the data from the source chart object into the destination chart object.
Ctrl Shift <Btn2Down> Chart object Chart object Copies the data from the source data object into the destination chart object. Establish a link between the two charts.
<Btn2Down> Chart object EditTable The data contained in the chart is moved to the table at the location specified by the pointer.
Ctrl <Btn2Down> Chart object EditTable The data contained in the chart is copied to the table at the location specified by the pointer.
Ctrl Shift <Btn2Down> Chart object EditTable The data contained in the chart is copied to the table at the location specified by the pointer. A link is established between the chart and the table.
<Btn2Down> Motif Text EditObject Creates a text object containing the text.
<Btn2Down> Motif Text Chart object Set the Chart title to be the string contained in the text widget.
<Btn2Down> Motif Text EditTable Content of the Text widget is copied into the specified table cell.
<Btn2Down> EditTable Chart object The data contained in the selected cells is copied into the chart object (move option is disabled for the EditTable widget).
Ctrl <Btn2Down> EditTable Chart object The data contained in the selected cells is copied into the chart object.
Ctrl Shift <Btn2Down> EditTable Chart object The data contained in the selected cells is copied into the chart object and a link is made between the table and the chart.
<Btn2Down> Graphic object EditObject Moves the object to the location specified by the pointer.
Ctrl <Btn2Down> Graphic object EditObject Copies the object to the location specified by the pointer.

Key Sequence	Drag Source	Drop Site	Description
<Btn2Down>:	Chart object	EditObject	Moves the chart to the specified location.
Ctrl <Btn2Down>:	Chart object	EditObject	Copies the chart to the specified location.
Ctrl Shift <Btn2Down>	Chart object	EditObject	Copies the chart to the specified location and makes a link between the two.
<Btn2Down>	Chart object	Chart object	Moves the data from the source chart to the destination chart.
Ctrl <Btn2Down>	Chart object	Chart object	Copies the data from the source chart object into the destination chart object.
Ctrl Shift <Btn2Down>	Chart object	Chart object	Copies the data from the source data object into the destination chart object. Establish a link between the two charts.
<Btn2Down>	Chart object	EditTable	The data contained in the chart is moved to the table at the location specified by the pointer.
Ctrl <Btn2Down>	Chart object	EditTable	The data contained in the chart is copied to the table at the location specified by the pointer.
Ctrl Shift <Btn2Down>	Chart object	EditTable	The data contained in the chart is copied to the table at the location specified by the pointer. A link is established between the chart and the table.
<Btn2Down>	Motif Text	EditObject	Creates a text object containing the text.
<Btn2Down>	Motif Text	Chart object	Set the Chart title to be the string contained in the text widget.
<Btn2Down>	Motif Text	EditTable	Content of the Text widget is copied into the specified table cell.
<Btn2Down>	EditTable	Chart object	The data contained in the selected cells is copied into the chart object (move option is disabled for the EditTable widget).
Ctrl <Btn2Down>	EditTable	Chart object	The data contained in the selected cells is copied into the chart object.
Ctrl Shift <Btn2Down>	EditTable	Chart object	The data contained in the selected cells is copied into the chart object and a link is made between the table and the chart.
<Btn2Down>	Graphic object	EditObject	Moves the object to the location specified by the pointer.
Ctrl <Btn2Down>	Graphic object	EditObject	Copies the object to the location specified by the pointer.