New: EXTRABUTTONS, IMAGEEXTRAid, IMAGEEXTRAPRESSid, IMAGEEXTRAHIGHLIGHTid attributes and EXTRABUTTON_CB callback for IupExpander to handle extra buttons at right when BARPOSITION=TOP.New: extra buttons with images in IupExpander
New: EXTRABUTTONS, IMAGEEXTRAid, IMAGEEXTRAPRESSid, IMAGEEXTRAHIGHLIGHTid attributes and EXTRABUTTON_CB callback for IupExpander to handle extra buttons at right when BARPOSITION=TOP.New: extra buttons with images in IupExpander

sanikoyes/iup,sanikoyes/iup,sanikoyes/iup,sanikoyes/iup