scripts/list-outputs.c


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#include <stdio.h>
#include <X11/extensions/Xrandr.h>

int main(int argc, char **argv)
{
    Display *dpy = XOpenDisplay(NULL);
    XRRScreenResources *rr;
    XRROutputInfo *output;
    int i;

    XSynchronize(dpy, 1);

    rr = XRRGetScreenResources(dpy, DefaultRootWindow(dpy));

    for (i = 0; i < rr->noutput; i++) {
	    output = XRRGetOutputInfo(dpy, rr, rr->outputs[i]);

        if (output->connection == RR_Connected) {
            printf("%s\n", output->name);
        }

        XRRFreeOutputInfo(output);
    }

    XRRFreeScreenResources(rr);

    XSync(dpy, 1);
    XCloseDisplay(dpy);

    return 0;
}