Vcl.ComCtrls.TCustomUpDown.OnChangingEx

• Up to Parent: TCustomUpDown

Delphi

property OnChangingEx: TUDChangingEventEx read FOnChangingEx write FOnChangingEx;

C++

__property TUDChangingEventEx OnChangingEx = {read=FOnChangingEx, write=FOnChangingEx};

Properties

Type	Visibility	Source	Unit	Parent
event	protected	Vcl.ComCtrls.pas Vcl.ComCtrls.hpp	Vcl.ComCtrls	TCustomUpDown

Description

Occurs when the position of an up-down control is about to change.

Write an OnChangingEx event handler (type: TUDChangingEventEx) to conditionally disallow changes to the value of Position. Set the AllowChange parameter to false to prevent a change to the current value of Position.

See Also

• CanChange

• Position

• OnChanging

• TUDChangingEventEx