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#include <X11/Xatom.h>
#include <X11/Xlib.h>
#include <X11/extensions/Xfixes.h>
#include <stdio.h>
#include <stdlib.h>
#ifdef __OpenBSD__
#define MAYBE_PLEDGE(p, ep) pledge(p, ep)
#else
#define MAYBE_PLEDGE(p, ep) 0
#endif /* __OpenBSD__ */
int main(void) {
Display *disp;
Window root;
Atom clip;
XEvent evt;
if (MAYBE_PLEDGE("stdio rpath", NULL) < 0) {
perror("pledge");
exit(2);
}
disp = XOpenDisplay(NULL);
if (!disp) {
fprintf(stderr, "Can't open X display\n");
exit(1);
}
root = DefaultRootWindow(disp);
clip = XInternAtom(disp, "CLIPBOARD", False);
XFixesSelectSelectionInput(disp, root, XA_PRIMARY, XFixesSetSelectionOwnerNotifyMask);
XFixesSelectSelectionInput(disp, root, clip, XFixesSetSelectionOwnerNotifyMask);
XNextEvent(disp, &evt);
XCloseDisplay(disp);
}
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