ShowMinFilterDlg example for C++ Builder

void __fastcall TForm1::ShowMinFilterDlg1Click(TObject *Sender) 
{
   L_INT nRet; 
   LEADDlgImgEffect1->Dimension = 10; 
   LEADDlgImgEffect1->DlgFlags = DLG_MINFILTER_SHOW_PREVIEW |
                                 DLG_MINFILTER_SHOW_TOOL_ZOOMLEVEL; 

   LEADDlgImgEffect1->LEADImage = LEADImage1; 

   nRet= LEADDlgImgEffect1->ShowMinFilterDlg ( this ); 
   if ( nRet == SUCCESS_DLG_OK ) 
   {
      LEADImage1->MinFilter (LEADDlgImgEffect1->Dimension ); 
   }
}