Win32 wperl open Console when system

fdesar has asked for the wisdom of the Perl Monks concerning the following question:

Dear Monks,

I tried many things and I'm still stuck on a stupid problem with Window.

I have a script running under wperl as I don't need any console window for my script, all its IO being handled by pipes.

But I need to be able to call a cmd command to display a PDF file in the default viewer (ie explore).

So I tried issuing the simple command :

qx{start "$pdf" /b };

and whatever I do (even using the /b option), it begins first by opening a console window before running the explorer.

Do you think of a way to get rid of this silly unexpected console ?

(Or any other way to display the PDF file...)

Thanks for any advise,

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Re: Win32 wperl open Console when system by Corion (Patriarch) on Jan 21, 2020 at 10:19 UTC
Using `cmd.exe` to launch the default program will always open a console window (if none is open already), because `cmd.exe` is a console program: `qx{start "$pdf" /b };` [download] If you want to avoid that, don't involve the `start` command of `cmd.exe` and instead do what the command does, by using the `AssocQueryStringA` function, as in this Stackoverflow post. Doing so shouldn't be too hard using Win32::API, but I can't test it right now.	[reply] [d/l] [select]
Re^2: Win32 wperl open Console when system by fdesar (Beadle) on Jan 21, 2020 at 11:08 UTC
unfortunatly, .pdf has no default association in HKEY_CLASS_ROOT for .pdf :-( And if I directly run `"C:\Program Files\Internet Explorer\iexplore.exe" file.pdf`, it asks what to do with the file instead of displaying it directly...	[reply] [d/l]
Re^3: Win32 wperl open Console when system by LanX (Saint) on Jan 21, 2020 at 11:16 UTC
You first said "explorer" (files) now you say iexplore (internet)? These are two different programs. this `C:\>C:\Windows\explorer.exe \tmp\xxx.pdf` works for me from the console (cmd.exe) update this doesn't :/ perl -e"`C:/Windows/explorer.exe /tmp/xxx.pdf`" Cheers Rolf _{(addicted to the Perl Programming Language :) Wikisyntax for the Monastery FootballPerl is like chess, only without the dice}	[reply] [d/l]
Re^4: Win32 wperl open Console when system by soonix (Chancellor) on Jan 21, 2020 at 12:26 UTC
Re^5: Win32 wperl open Console when system by sn1987a (Curate) on Jan 21, 2020 at 12:44 UTC
Some notes below your chosen depth have not been shown here
Re: Win32 wperl open Console when system by Anonymous Monk on Jan 21, 2020 at 09:25 UTC
Secrets Hide console -> How to hide/inhibit the console window when launching a Perl script on Windows? use Win32 qw(SW_HIDE); Win32::SetChildShowWindow(SW_HIDE);	[reply]
Re^2: Win32 wperl open Console when system by fdesar (Beadle) on Jan 21, 2020 at 10:11 UTC
Thanks for your answer, but it doesn answer my question at all ! I'm already running wperl with no problem, except that I need to run a cmd command from it and it always opens an annoying console window just to launch the start command which is immediately exiting. This is this case I'm trying to solve...	[reply]
Re^3: Win32 wperl open Console when system by LanX (Saint) on Jan 21, 2020 at 10:49 UTC
But the linked thread looks good to me. Did you look into it and try all listed options? Cheers Rolf _{(addicted to the Perl Programming Language :) Wikisyntax for the Monastery FootballPerl is like chess, only without the dice}	[reply]
Re^4: Win32 wperl open Console when system by fdesar (Beadle) on Jan 21, 2020 at 13:38 UTC
Re^5: Win32 wperl open Console when system by afoken (Chancellor) on Jan 21, 2020 at 14:58 UTC
Re^3: Win32 wperl open Console when system by Anonymous Monk on Jan 21, 2020 at 12:49 UTC
I just told you how to hide console and how i found that answer	[reply]

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