Reordering tabs with the AllowDragReorder property

The next release of OpenInsight includes a new TABCONTROL property called ALLOWDRAGREORDER, which allows you to drag a tab to a new position within the control. It’s a simple boolean property, and when set to True tabs may be dragged and reordered with the mouse – an image of the tab is moved with the cursor, and a pair of arrows are displayed to mark the potential insertion point.

Here’s an example of a tab being dragged in the IDE:

Shows a image of the IDE with a tab being dragged by a cursor, along with the drag0image and the insertion marker arrows.

Bonus trivia

  • The tabs may be scrolled while dragging by hovering outside either edge of the control.
  • This property is not supported for:
    • MultiLine tab controls
    • Vertically-aligned tab controls
  • The LISTBOX control also supports this property for reordering its items – see the “Order Tabs” dialog in the Form Designer for an example, or the list of types in the IDE’s “Open Entity” dialog.

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