| [Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] |
Passes key events for the specified type to the handlers added to the control.
Source position: controls.pp line 1557
protected procedure TControl.DoCallKeyEventHandler( |
HandlerType: TControlHandlerType; |
var Key: Word; |
Shift: TShiftState |
); |
HandlerType |
|
Type for the handler, like OnKeyDown. |
Key |
|
Key code for the key event notification. |
Shift |
|
Shift, Ctrl, or Alt modifier for the key event notification. |
DoCallKeyEventHandler iterates over the handler routines using the type specified in HandlerType. The routines are cast to the TKeyEvent type used to implement the handler and receives the arguments specified in Key and Shift. The current class instance is used as the Sender for the event notification.
DoCallKeyEventHandler is called from the KeyDown method in descendent classes like TWinControl.
|
Signals OnKeyDown event handlers (when assigned). |
|
|
Notification handler types. |
|
|
Defines an event handler for key events. |
|
| Version 3.2 | Generated 2024-02-25 | Home |