Displaying pdf on the screen

[dany060954]

Hi, i use SumatraPdf in a python program to display or print a pdf. When using the next commands :
command = ["SumatraPDF.exe", "-presentation", "-new-window", "-exit-when-done", pdf_file]
subprocess.run(command, check=True)
the pdf is displayed on the screen but when i press the close key(X) or ESC-key the pdf disappear from the screen but it takes sometimes 5 to 15 seconds before my next python statement will be executed, this does not happen when i print the pdf.
Is there a solution to solve this problem ?

[GitHubRulesOK]

There should be no delay as far as SumatraPDF is concerned. Also -exit-when-done and open a second -new window should not be related to presentation -exit delay only relates to printing feedback.
Try the same from a command line so BOTH will run at the same time, as there should be no feedback of fail.
It is the external shell that decides how and when the multiple calls are made.
I have to admit that seems odd since currently my self build copy will not jump fullscreen with such a call but that does not detract from the principle SumatraPDF responds instantly to the caller. To get greater control the calls should be direct (similar to Acrobat) via DDE rather than the shell.

"%programfiles%\sumatrapdf\SumatraPDF.exe" -presentation -new-window -exit-when-done try.pdf && "%programfiles%\sumatrapdf\SumatraPDF.exe" -presentation -new-window -exit-when-done try2.pdf

[dany060954]

After doing some more tests i come to conclusion that from the moment you see the pdf on the screen and then close it immediately it take sometimes 10 seconds before it executes the next statement, when i leave the pdf a few seconds open on the screen and then close it the next statement will be executed almost immediately !

[GitHubRulesOK]

Acrobat, Okular & other readers like SumatraPDF in a step by step case like this is supposed to be TSR (terminate and stay resident) however that is how Adobe Acrobat functions for Printing and Presentations and is criticised for being constantly visible when the abuser wants "silent running". Acrobat does not have an exit when done command but will DDE[close] when instructed. Sadly many users will simply TaskKill while it is still processing instructions !. SumatraPDF provides a means for the last print to include -exit-when-done printing.

For Latex presentations (where the aim is to simply refresh the canvas content) then SumatraPDF is opened as resident, then driven in the background by the editor and PDF compiler. Thus never asked to DDE[close], until the last file is presented. This is why there is in ockular a -unique command and in SumatraPDF there is -reuse-instance.