Hiding External program

Matthew Maylin

I'm trying to call a external program from another. My main program is a GUI
buildin borland c++ builder, and my sibbling is compiled Matlab code.

I would like to call to the program, passing arguments and suppress the
msdos window from popping up.

I have had success with system( ) and spawnl( ) but cant seem to get the
external program to just run in the background.

Jul 19 '05 #1

Subscribe Reply

4465

Jakob Bieling

"Matthew Maylin" <mi***@kent.ac. uk> wrote in message
news:bl******** **@athena.ukc.a c.uk...

I'm trying to call a external program from another. My main program is a GUI buildin borland c++ builder, and my sibbling is compiled Matlab code.

I would like to call to the program, passing arguments and suppress the
msdos window from popping up.

I have had success with system( ) and spawnl( ) but cant seem to get the
external program to just run in the background.

You could try to get the console window with 'FindWindow' and hide it
with 'ShowWindow (.., SW_HIDE)'. This way it will also disappear from the
taskbar. Problem is that you might see a little flash for the short time the
window is created until you hide it.

If you use 'CreateProcess' instead of 'system ()' you can even pass the
SW_HIDE flag in the 'wShowWindow' member of the 'STARTUPINFO' structure
passed to 'CreateProcess' , which will do the same as the above solution,
just without the flash.

Other than that, I am not sure why you posted this in comp.lang.c++ as
your question does not have anything to do with the C++ Language but rather
with the OS and its API you are working with. Try posting to a more
approriate news group, if my answer does not help (which I am not too sure
of, since I have never heard about 'spawnl ()' on the OS I am using).

hth
--
jb

(replace y with x if you want to reply by e-mail)

Jul 19 '05 #2

Jakob Bieling wrote:
[SNIP]

Keep your Windows stuff out of here. Thank you:

http://www.slack.net/~shiva/welcome.txt

http://www.parashift.com/c++-faq-lit...t.html#faq-5.9

--
WW aka Attila

Jul 19 '05 #3

Matthew Maylin

Thanks Jakob. I'll look into thoose suggestions.

WW, hey I'm sorry thought it was a pporpiate for newsgroup. There are worst
crimes in the world you know.

Jul 19 '05 #4

Jakob Bieling

"WW" <wo***@freemail .hu> wrote in message
news:bl******** **@phys-news1.kolumbus. fi...

Jakob Bieling wrote:
[SNIP]

Keep your Windows stuff out of here.

My way of showing the OP that his question requires a platform specific
answer.
--
jb

(replace y with x if you want to reply by e-mail)

Jul 19 '05 #5

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