Hello,
I'm trying to change a setting in `gsettings' using <gio.h>'s
g_settings_set_value() in a C program, and it successfully changes the
value, but it is not persistent, as you can see from the output that the
program (a.out, see source below) produces:
$ gsettings get org.gnome.desktop.background picture-uri
'file:///usr/share/backgrounds/Winter_Fog_by_Daniel_Vesterskov.jpg'
$ ./a.out
Before: /usr/share/backgrounds/Winter_Fog_by_Daniel_Vesterskov.jpg
Setting wallpaper to
/usr/share/backgrounds/La_Gomera_by_Alfonso_Aguirre_Arbex.jpg ... Done
After: /usr/share/backgrounds/La_Gomera_by_Alfonso_Aguirre_Arbex.jpg
$ ./a.out
Before: /usr/share/backgrounds/Winter_Fog_by_Daniel_Vesterskov.jpg
Setting wallpaper to
/usr/share/backgrounds/La_Gomera_by_Alfonso_Aguirre_Arbex.jpg ... Done
After: /usr/share/backgrounds/La_Gomera_by_Alfonso_Aguirre_Arbex.jpg
$ gsettings get org.gnome.desktop.background picture-uri
'file:///usr/share/backgrounds/Winter_Fog_by_Daniel_Vesterskov.jpg'
As you can see from the output, the result from calling
g_settings_set_value() is not persistent. What am I doing wrong?
Regards,
Serrano
The (partial) source:
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <limits.h>
#include <gio/gio.h>
...
int main(void) {
char current_wallpaper[PATH_MAX];
char new_wallpaper[] =
"/usr/share/backgrounds/La_Gomera_by_Alfonso_Aguirre_Arbex.jpg";
...
/* Get the path of the current wallpaper */
get_background_uri(current_wallpaper);
fprintf(stderr, "Before: %s\n", current_wallpaper);
/* Set the new wallpaper */
fprintf(stderr, "Setting wallpaper to %s ... ", new_wallpaper);
if (set_background_uri(new_wallpaper)) {
fprintf(stderr, "Done\n");
get_background_uri(current_wallpaper);
fprintf(stderr, "After: %s\n", current_wallpaper);
}
else {
fprintf(stderr, "Failed\n");
}
return 0;
}
int get_background_uri(char *dest) {
GSettings *gso;
const char *uri;
gso = g_settings_new("org.gnome.desktop.background");
uri = g_variant_get_string(g_settings_get_value(gso, "picture-uri"),
NULL);
strcpy(dest, uri+7);
return 0;
}
int set_background_uri(const char *path) {
char pathc[PATH_MAX];
GSettings *gso;
if (!strstr(path, "file://"))
sprintf(pathc, "file://%s", path);
else
strcpy(pathc, path);
gso = g_settings_new("org.gnome.desktop.background");
return g_settings_set_string(gso, "picture-uri", pathc);
}
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