Selection

• Sep 09, 2024

The RichEdit client API available using the selection property allows you to access and modify selections in a document.

The control keeps the following information about selection:

• the active sub document (activeSubDocument)
• the list of selected intervals (intervals)
• the start and end positions of the last selected interval (start, end, anchor, and active)

Example: in the image below, three intervals are selected. The last interval is selected from right to left. In this case, the properties return the following values.

Set Selection

Selection API allows you to set a cursor position (selection with zero length), select a document interval, multiple intervals, or the entire sub-document. The table below lists methods that allow you to set selection.

Selected element	Method	Example
Set the cursor position	setSelection(position)	richEdit.selection.setSelection(5);
Select an interval	setSelection(interval)	richEdit.selection.setSelection(new DevExpress.RichEdit.Interval(4, 10));
Select several intervals	setSelection(interval[])	richEdit.selection.setSelection([{start: 0, length: 3}, {start: 28, length: 9}]);
Select the entire sub-document	selectAll	richEdit.selection.selectAll();