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Join Date: Aug 2005
Location: Seaham, UK
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Junior Poster
How can I execute a command like for example using system(); but execute so the program does not need to wait until the function returns before it continues.
Also when executing a command using system(); can you make it so that the console window does not pop up onto the screen.
Thanks.
Also when executing a command using system(); can you make it so that the console window does not pop up onto the screen.
Thanks.
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Join Date: Aug 2005
Location: near St Louis, Missouri, USA
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You can't do any of those things with system() function. You need to use more os-specific api calls. MS-Windows use CreateProcess(), don't know about *nix.
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Join Date: Aug 2005
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You should use the windows api instead of using system.
... the hat of 'is this a cat in a hat?'
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Join Date: Jan 2007
Location: Maryland, USA
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for *nix I think you can postfix your command with &. This will allow system() to return immediately.
Last edited by Sturm : Jun 19th, 2007 at 6:15 pm.
"Hey ass, don't hijack my thread. This is serious." -JoshSCH
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Join Date: Aug 2005
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Junior Poster
Oh right, so when using CreateProcess(), how would commands be executed as if it was done by system()? would I call cmd.exe and then specify the command as a parameter to cmd.exe or something along those lines?
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Join Date: Aug 2005
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No you don't run cmd.exe at all, read about the parameters at MSDN here -- the second-to-last parameter has an option to run the process without a window. And CreateProcess() will run without waiting for the process to finish.
>>for *nix I think you can postfix your command with &.
I don't think that works inside a c++ program, only from a shell program.
>>for *nix I think you can postfix your command with &.
I don't think that works inside a c++ program, only from a shell program.
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Join Date: Jan 2007
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>I don't think that works inside a c++ program, only from a shell program.
No it works. Just tested it.
starts emacs and returns immediately
No it works. Just tested it.
c++ Syntax (Toggle Plain Text)
starts emacs and returns immediately
Last edited by Sturm : Jun 19th, 2007 at 8:43 pm.
"Hey ass, don't hijack my thread. This is serious." -JoshSCH
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Join Date: Feb 2007
Location: Bangalore, India
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Posting Pro
If you don't wanna be platform dependent you can still do this by forking a thread for system(). Should be simple enough as well.
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