{%MainUnit ../graphics.pp}

{ TSharedRasterImage

 *****************************************************************************
  This file is part of the Lazarus Component Library (LCL)

  See the file COPYING.modifiedLGPL.txt, included in this distribution,
  for details about the license.
 *****************************************************************************
}

constructor TSharedRasterImage.Create;
begin
  inherited Create;
end;

destructor TSharedRasterImage.Destroy;
begin
  FreeAndNil(FSaveStream);
  FreeHandle;
  inherited Destroy;
end;

function TSharedRasterImage.HandleAllocated: boolean;
begin
  Result := FHandle <> 0;
end;

procedure TSharedRasterImage.FreeHandle;
begin
  if FHandle = 0 then Exit;
  
  DeleteObject(FHandle);
  FHandle := 0;
end;

function TSharedRasterImage.ReleaseHandle: THandle;
// simply return the current handle and set to 0 without freeing handles
begin
  Result := FHandle;
  FHandle := 0;
end;


function TSharedRasterImage.IsEmpty: boolean;
begin
  Result := (FHandle = 0) and (SaveStream = nil);
end;

// included by graphics.pp