libvips/man/im_init_world.3

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.TH IM_INIT_WORLD 3 "11 April 1990"
.SH NAME
im_init_world, im_get_option_group \- start up VIPS
.SH SYNOPSIS
#include <vips/vips.h>
int im_init_world( const char *argv0 )
.br
GOptionGroup *im_get_option_group( void );
.SH DESCRIPTION
.B im_init_world(3)
starts up the VIPS library. It:
- initialises any libraries that VIPS is using, including GObject
- starts up the threading system
- guesses where the VIPS data files are and sets up i18n
- loads any plugins from libdir/vips-x.x
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The
.B argv0
argument is the value of
.B argv[0]
your program was passed by the host operating system. VIPS uses this with
.B im_guess_prefix(3)
to try to find the various VIPS data files.
.SH EXAMPLE
int
main( int argc, char **argv )
{
if( im_init_world( argv[0] ) )
error_exit( "unable to start VIPS" );
return( 0 );
}
.B im_get_option_group(3)
returns a
.B GOptionGroup
containing various VIPS command-line options. It can be used with GOption to
help parse argc/argv.
.SH SEE ALSO
im_guess_prefix(3), im_guess_libdir(3), GOption(3)
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.SH COPYRIGHT
Birkbeck College and the National Gallery (c) 1994