I'm trying to take a screenshot using the gnome dbus api https://gitlab.gnome.org/GNOME/xdg-desktop-portal-gnome/-/blob/main/data/org.gnome.Shell.Screenshot.xml
#include <stdbool.h>
#include <stdio.h>
#include <glib/gprintf.h>
#include <gio/gio.h>
int main(void)
{
GDBusProxy *proxy;
GDBusConnection *conn;
GError *error = NULL;
conn = g_bus_get_sync(G_BUS_TYPE_SESSION, NULL, &error);
g_assert_no_error(error);
proxy = g_dbus_proxy_new_sync(conn,
G_DBUS_PROXY_FLAGS_NONE,
NULL, /* GDBusInterfaceInfo */
"org.gnome.Shell", /* name */
"/org/gnome/Shell", /* object path */
"org.gnome.Shell.Screenshot", /* interface */
NULL, /* GCancellable */
&error);
g_assert_no_error(error);
int success;
char filename_used[100];
g_dbus_proxy_call_sync(proxy,"Screenshot",
g_variant_new ("(bbsbs)", TRUE, FALSE, "/tmp/screenshot",&success,filename_used),
G_DBUS_CALL_FLAGS_NONE,
-1,
NULL,
&error);
g_assert_no_error(error);
return 0;
}
the error: ERROR:dbus-stack.c:33:main: assertion failed (error == NULL): GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: No such method ?Screenshot? (g-dbus-error-quark, 19) Bail out! ERROR:dbus-stack.c:33:main: assertion failed (error == NULL): GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: No such method ?Screenshot? (g-dbus-error-quark, 19) Aborted (core dumped)
obviously I'm doing something wrong
I haven't tested my solution, but you are using wrong object_path, correct one is /org/gnome/Shell/Screenshot. Also the method accepts only three input parameters, so g_variant first parameter should be "(bbs)".
You can use d-feet to introspect names, this can be very helpful for you. Please let me know if this is the correct answer, otherwise I will test it myself.