TCustomDBComboBox.KeyDown procedure
Performs actions needed to apply the key down event.
Declaration
procedure KeyDown(var Key: Word; Shift: TShiftState); overrideArguments
Key | Virtual key code handled in the method. |
Shift | Key modifier handled in the method. |
Description
KeyDown is an overridden method in
TCustomDBComboBox,
and calls the inherited method on entry. It ensures that a virtual key which
affects the datasource state is applied to the control. KeyDown handles the
following virtual key codes:
- VK_ESCAPE
- Editing is cancelled. Calls the Cancel method in the linked dataset when the datasource is in an edit state. Calls the Reset method for the data link if the datasource is not being edited. Calls SelectAll to re-select content in the control. Sets Key to VK_UNKNOWN after applying the original virtual key code.
See also
An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.