Skip to main content

beforeColumnDrag

fires before dragging of a column has started

beforeColumnDrag: (data: IDragInfo, events: MouseEvent) => void | boolean;

Parameters:

  • data: object - data object
  • events: MouseEvent - a native HTML event object

Returns:

Return false to prevent dragging a column; otherwise, true.

Example

grid.events.on("BeforeColumnDrag", function(data, events){    // your logic here    return false;});

Related sample: Setup drag column (Pro)

Pro version only

This functionality requires PRO version of the dhtmlxGrid (or DHTMLX suite) package.

The data object contains the following parameters:

start(string, number) the id of a column, from which the dragging process has started
source(array) an array with ids of dragged columns
target(string, number) the id of a potential target column

Change log:

  • added in v6.5
  • Before v7.0, the event took one parameter - the column id.
  • Starting from v7.0, the event takes two parameters: data and e.