Re: Redirecting screencapture output
Re: Redirecting screencapture output
- Subject: Re: Redirecting screencapture output
- From: Yann Bizeul <email@hidden>
- Date: Thu, 22 Jul 2004 13:22:38 +0200
As far as I know, screencapture does not provide a way to pipe its
result to stdout.
An ugly workaround would be to create a fifo in /tmp/ and save the
result to this fifo. You would be able to read the fifo to get the file
back. Like this, you won't have file operation overhead.
Personaly, I would write the screen to /tmp and read it back with
NSImage, If I don not find a way to handle the screen capture all by
myself.
Le 21 juil. 04, ` 15:29, Lorenzo a icrit :
>
Hi,
>
as you know the unix command "screencapture" saves the main screen
>
content
>
to a PDF file or to the clipboard. Instead I would like to don't save
>
any
>
file (it's slow), don't occupy the clipboard, but I would like to get
>
that
>
output in a NSData or NSImage variable in my application. Is any way
>
to do
>
that? Piping the command? If so, I don't know the sintax.
>
Can someone help me?
>
>
Actually I call
>
NSArray *args;
>
args = [NSArray arrayWithObjects:@"-x", @"-m", @"filePath", nil];
>
>
I tried even to add
>
NSPipe *myPipe = [NSPipe pipe];
>
[task setStandardOutput:myPipe];
>
>
but the length of
>
NSData *dataOut = [[[task standardOutput] fileHandleForReading]
>
availableData];
>
is zero. And the file has been saved anyway.
>
>
I tried also the following unsuccessfully. I don't know the syntax.
>
args = [NSArray arrayWithObjects:@"-x", @"-m", @"|", nil];
>
What should I write after the pipe "|" ?
>
>
Any code would be welcome. Thanks.
>
>
>
Best Regards
>
--
>
Lorenzo
>
email: email@hidden
>
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--
Yann Bizeul - yann at tynsoe.org
http://projects.tynsoe.org/
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