Are the calls to the dll function PDFToImageConverter re-entrant?
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Sorry, we don't understand your meaning, do you wish call PDFToImageConverter() function from multiple threads?
VeryPDF PDFToImageConverter() function is thread-safe, so it can be called from multiple threads at same time without any problem.
also, VeryPDF has a PDF to Image Converter Command Line product, you can also execute several instances of PDF to Image Converter Command Line application from your source code to convert lots of PDF files to image files at same time, multiple EXE processes will able to take full advantage of computer resources.
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