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OnColorKeyChange

event

Delphi
property OnColorKeyChange: TOnColorKeyChange read FOnColorKeyChange write FOnColorKeyChange;
C++Builder
__property TOnColorKeyChange OnColorKeyChange = {read=FOnColorKeyChange, write=FOnColorKeyChange};
typedef void __fastcall (__closure *TOnColorKeyChange)(System::TObject* Sender, System::Uitypes::TColor ColorKey);
C#
public event OnColorKeyChangeEventHandler OnColorKeyChange;
public delegate void OnColorKeyChangeEventHandler(object sender, TOnColorKeyChangeEventArgs e);
VB.NET
Public Event OnColorKeyChange As OnColorKeyChangeEventHandler
Public Delegate Sub OnColorKeyChangeEventHandler(sender As Object, e As TOnColorKeyChangeEventArgs)
C++/Qt
void SetOnColorKeyChange (TOnColorKeyChangeCb OnColorKeyChangeCb);
typedef void CALLBACK TOnColorKeyChangeCb (void *Object, void *Sender, int ColorKey);

when ColorKeyEnabled is enabled, this TOnColorKeyChange event occurs when starting preview, recording or playback, and returns the color key to use for transparent windows. See the VideoGrabber1ColorKeyChange event in the MainDemo project for sample code.