When a PDF is opened in Foxit PhantomPDF/Foxit Reader, it blocks write access to the opened file. Therefore, no other application is able to write to the opened DPF file unless you explicitly close it or completely exit Foxit application. But my main purpose is to only read files within Foxit application and hope it could work together with other applications since I often use some other applications (such as Latex) to create my PDF documents. If I opened the resulting file in Foxit once to look at it, I cannot compile it with other application again until I close the file in Foxit.
Since V5.0 of Foxit PhantomPDF/Foxit Reader, PDF file is opened in Foxit PhantomPDF/Foxit Reader in exclusive mode by default. However, our developers have worked out a method for user to open PDF file in Foxit PhantomPDF/Foxit Reader 7.0 and above without locking it. This requires to run a command line to opening PDF file to ignore locks on the opened PDF file. Please open it with command line and add and additional parameter nolock=1 in command line.
[Foxit Reader.exe path] "PDF file path" /A nolock=1
As shown in the screenshot below, I use command line to call Foxit PhantomPDF to opened test.pdf on my desktop in a non-blocked mode.
"C:\Program Files (x86)\Foxit Software\Foxit PhantomPDF\FoxitPhantomPDF.exe" "C:\Users\LISA\Desktop\test.pdf" /A nolock=1
After running this command line, the PDF file would be opened with non-blocked mode. Then you would receive warning pop-up “ Do you want to reload it?” in Foxit application after you made changes to the same PDF file in other application (such as Latex), please click on OK to reload the updated content to PDF file in Foxit application.