*typedef struct tagINITCOMMONCONTROLSEX { * DWORD dwSize; // size of this structure * DWORD dwICC; // flags indicating which classes to be initialized *} INITCOMMONCONTROLSEX, *LPINITCOMMONCONTROLSEX; #define ICC_LISTVIEW_CLASSES 0x00000001 && listview, header #define ICC_TREEVIEW_CLASSES 0x00000002 && treeview, tooltips #define ICC_BAR_CLASSES 0x00000004 && toolbar, statusbar, trackbar, tooltips #define ICC_TAB_CLASSES 0x00000008 && tab, tooltips #define ICC_UPDOWN_CLASS 0x00000010 && updown #define ICC_PROGRESS_CLASS 0x00000020 && progress #define ICC_HOTKEY_CLASS 0x00000040 && hotkey #define ICC_ANIMATE_CLASS 0x00000080 && animate #define ICC_WIN95_CLASSES 0x000000FF #define ICC_DATE_CLASSES 0x00000100 && month picker, date picker, time picker, updown #define ICC_USEREX_CLASSES 0x00000200 && comboex #define ICC_COOL_CLASSES 0x00000400 && rebar (coolbar) control #define ICC_INTERNET_CLASSES 0x00000800 #define ICC_PAGESCROLLER_CLASS 0x00001000 && page scroller #define ICC_NATIVEFNTCTL_CLASS 0x00002000 && native font control set procedure to convertapi.prg additive declare integer InitCommonControlsEx in comctl32.dll string @ tagINITCOMMONCONTROLSEX lcBuffer = ToLong( 4 + 4 ) + ToLong( ICC_TREEVIEW_CLASSES ) InitCommonControlsEx( @lcBuffer ) * ConvertAPI.prg 08-Oct-97 * these functions convert to/from internal binary storage function ToWord( pnNumber ) local lnMSB, lnLSB lnMSB = int( pnNumber / 256 ) && most significant byte lnLSB = pnNumber % 256 && least significant byte return chr( lnLSB ) + chr( lnMSB ) function ToLong( pnNumber ) local lnMSW, lnLSW lnMSW = int( pnNumber / 65536 ) && most significant word lnLSW = pnNumber % 65536 && least significant word return ToWord( lnLSW ) + ToWord( lnMSW ) function FromWord( pcBuffer ) return asc( substr( pcBuffer, 2, 1 ) ) * 256 + asc( left( pcBuffer, 1 ) ) function FromLong( pcBuffer ) return FromWord( substr( pcBuffer, 3, 2 ) ) * 65536 + FromWord( left( pcBuffer, 2 ) )It needs to be called with the proper set of flags for the controls being used, it does seem to work for getting the Treeview themed.