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Full Discussion: question about popen in C
Top Forums Programming question about popen in C Post 302504880 by lilezek on Tuesday 15th of March 2011 04:36:00 PM
Old 03-15-2011
You asked many questions but I don't know what are you trying.
Do you try to open a program and redirect both stdin and stdout?

I've got a function that does that pretty well, so if you are trying that ask me. If not, try to explain what are your objective.
 

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GPIV_MKTESTIMG(1)					      General Commands Manual						 GPIV_MKTESTIMG(1)

NAME
gpiv_mktestimg - Generates a simplified image for image processing. SYNOPSIS
gpiv_mktestimg [-h | --help] [-p | --print] [-t N | --threshold N] [-w N] [-v | --version] [filename] < stdin > stdout DESCRIPTION
gpiv_mktestimg generates an image (pair) in order to be processed by the processing tools. This program is provided for developing and testing image processing tools. The parameters read from the configuration resources (containing the key GPIV_IMGPROC) may be overruled by the command line options, as explained below. Options -h | --help On-line help -t N | --threshold N Threshold value -v | --version Print version information on standard output, then exit successfully. -w N window size (default: 15) filename Input image filename. Overrides stdin and stdout with the full filename of the image. Output will be written to filename.png. Param- eters are stored in filename.par and may be used for future use by including them in ./gpivrc. If stdin and stdout are used, the input is expected to be a PNG formatted image. SEE ALSO gpivtools AUTHOR
Gerber Van der Graaf 7 November 2006 GPIV_MKTESTIMG(1)
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