ShowUnsharpMaskDlg example for Delphi

procedure TForm1.ShowUnsharpMaskDlg1Click(Sender: TObject); 
var
   nRet: L_INT; 
begin
   LEADDlgImgEffect1.DlgFlags:= DLG_UNSHARPMASK_SHOW_PREVIEW Or
                           DLG_UNSHARPMASK_SHOW_TOOL_ZOOMLEVEL; 

   LEADDlgImgEffect1.LEADImage:= LEADImage1;

   nRet:= LEADDlgImgEffect1.ShowUnsharpMaskDlg ( Self );
   if ( nRet = SUCCESS_DLG_OK ) then
   begin
      LEADImage1.UnsharpMask ( LEADDlgImgEffect1.Amount,
                               LEADDlgImgEffect1.Radius,
                               LEADDlgImgEffect1.Threshold,
                               LEADDlgImgEffect1.UnshrpMaskFlags ); 
   end; 
end;