API:FMX.TreeView.TCustomTreeView.KeyUp
Delphi
procedure KeyUp(var Key: Word; var KeyChar: System.WideChar; Shift: TShiftState); override;
C++
virtual void __fastcall KeyUp(System::Word &Key, System::WideChar &KeyChar, System::Classes::TShiftState Shift);
Properties
Type | Visibility | Source | Unit | Parent |
---|---|---|---|---|
procedure function |
protected | FMX.TreeView.pas FMX.TreeView.hpp |
FMX.TreeView | TCustomTreeView |
Description
OnKeyUp event dispatcher.
FMX.TreeView.TCustomTreeView.KeyUp inherits from FMX.Controls.TControl.KeyUp. All content below this line refers to FMX.Controls.TControl.KeyUp.
OnKeyUp event dispatcher.
KeyUp provides a response when a key is released while the control has keyboard focus. KeyUp calls the OnKeyUp event handler if one is assigned.
A control calls KeyUp in response to any key-up messages, decoding the message parameters into the key code, character code, and shift state. The control passes them in the Key
, KeyChar
, and Shift
parameters, respectively:
Key
is the scan code of the released keyboard key.KeyChar
is the character code of the released key.Shift
indicates which shift keys--SHIFT, CTRL, ALT, and CMD (only for Mac)--were down when you release the previously pressed key with the control in focus.
Override the protected KeyUp method to provide other responses when a key is released while the control has keyboard input focus.