TPickListCellEditor.KeyDown

Handles a key down message for the cell editor.

Declaration

Source position: grids.pas line 283

Arguments

Description

KeyDown is an overridden method in TPickListCellEditor. It extends the inherited method to ensure that specific key codes are applied to the grid or the editor control as needed.

KeyDown calls the inherited method on entry to handle Tab, Return, and Escape key code in the manner needed for the TCustomComboBox ancestor. It adds support for the following keys:

F2

Clears the selection length and moves the caret position to the end of the Text in the cell editor.

Return

Calls the EditorkeyDown method for the grid control, discards the key code, and closes the drop down in the editor control when it is expanded.

Delete

Discards the key code if the grid control or the editor cannot be modified.

Cursor Up, Cursor Down

Calls the KeyDown method for the grid control if the drop down is not expanded for the cell editor.

Cursor Left, Cursor Right

Handles cell navigation for the grid control, and caret position changes for the cell editor. Uses SelStart to determine the position for the selected text in the editor. Forwards the key to the grid control or its Editor control as needed for the current selection.

Home, End

Ignored in the key down handler.

Escape

Allows the grid control to handle the key. When not handled, the unedited value is restored to the cell and the EditorHide method for the grid is called to hide the editor control.

Other unhandled key codes are forwarded to the EditKeyDown method for the grid control.

See also