Convert PPT to image using vbs

'Usage: drag and drop the pptfile to the file. 'Install the PowerPoint program on the machine on error resume next set argobj = wscript. arguments pptfilepath = argobj (0) imgtype = inputbox ("format of the input and export file, which can be JPG, PNG, BMP, GIF", "format of the input and export file ", "PNG") if imgtype = "" or (lcase (imgtype) <> "jpg" and lcase (imgtype) <> "PNG" and lcase (imgtype) <> "BMP" and lcase (imgtype) <> "GIF") Then imgtype = "PNG" msgbox "input is incorrect, output "end if imgw = inputbox (" input and export image width "," input and export image width "," 640 ") in PNG format ") if imgw = "" Or isnumeric (imgw) = false then imgw = 640 msgbox "is incorrect, the program uses the default value: 640 "end if imgh = inputbox (" Enter the height of the exported image "," Enter the height of the exported image "," 480 ") if imgh =" "Or isnumeric (imgh) = false then imgh = imgw * 0.75 msgbox "incorrect input. The program uses the default value:" & imgh end if call form_load (pptfilepath, imgtype) private sub form_load (filepath, Format) if format = "" Then format = "GIF" end if folderpath = left (filepath, Len (filepath)-4) If lcase (right (filepath, 4) <> ". ppt "then call convertppt (filepath, folderpath &". ppt ") end if filepath = folderpath &". ppt "createfolder (folderpath) set ppapp = Createobject (" PowerPoint. application ") set pppresentations = ppapp. presentations set pppres = pppresentations. open (filepath,-1, 0, 0) set ppslides = pppres. slides for I = 1 to ppslides. count INAME = "000000" & I INAME = right (INAME, 4) 'count the four-digit call ppslides. item (I ). export (folderpath & "\" & INAME &". "& format, format, imgw, imgh) Next set ppapp = nothing set pppres = nothing end sub function createfolder (filepath) dim FSO, f On Error resume next set FSO = Createobject ("scripting. fileSystemObject ") if not FSO. folderexists (filepath) then set f = FSO. createfolder (filepath) end if createfolder = f. path set FSO = nothing set f = nothing end Function Sub convertppt (filename1, filename2) dim PPT dim pres set PPT = Createobject ("PowerPoint. application ") set pres = PPT. presentations. open (filename1, false) Pres. saveas filename2, true Pres. close PPT. quit set pres = nothing set PPT = nothing end sub