ShowMinFilterDlg example for Delphi

procedure TForm1.ShowMinFilterDlg1Click(Sender: TObject); 
var
   nRet: L_INT; 
begin
   LEADDlgImgEffect1.Dimension:= 10; 
   LEADDlgImgEffect1.DlgFlags:= DLG_MINFILTER_SHOW_PREVIEW Or
                                 DLG_MINFILTER_SHOW_TOOL_ZOOMLEVEL; 

   LEADDlgImgEffect1.LEADImage:= LEADImage1; 

   nRet:= LEADDlgImgEffect1.ShowMinFilterDlg ( Self ); 
   if ( nRet = SUCCESS_DLG_OK ) then
   begin
      LEADImage1.MinFilter ( LEADDlgImgEffect1.Dimension ); 
   end; 
end;