qt5base-lts/config.tests/x11/xinput2/xinput2.cpp

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#include <X11/Xlib.h>
#include <X11/extensions/XInput2.h>
#include <X11/extensions/Xge.h>

#ifndef XInput_2_0
#  error "Missing XInput_2_0 #define"
#endif

int main(int, char **)
{
    // need XGenericEventCookie for XInput2 to work
    Display *dpy = 0;
    XEvent xevent;
    if (XGetEventData(dpy, &xevent.xcookie)) {
        XFreeEventData(dpy, &xevent.xcookie);
    }

    XIEvent *xievent;
    xievent = 0;

    XIDeviceEvent *xideviceevent;
    xideviceevent = 0;

    XIHierarchyEvent *xihierarchyevent;
    xihierarchyevent = 0;

    int deviceid = 0;
    int len = 0;
    Atom *atoms = XIListProperties(dpy, deviceid, &len);
    if (atoms)
        XFree(atoms);

    return 0;
}