win2pdfd.exe pdf2png "sourcepdf" "destpng" pagenumber
Convert the PDF specified by "sourcepdf" to a PNG image file "destpng". If "pagenumber" is 0, all pages are converted as separate files one per page in the format:
If the "pagenumber" is greater than zero, the specified page number is saved to the filename specified by "destpng".
Any file names that contain spaces must be enclosed with quotation marks.
Returns 0 on success, and a Windows system error code on failure.