[SOLVED]Where to add the lX11 reference to Qt project on linux

[antonyprojr]

I'm writing a program to simulate keyboard events, but when i try to compile i get six "undefined reference to", after reading some articles i discovered that is a missing of a reference to lX11, but i don't understand exactly where to add this reference.

@#include <QtCore/QCoreApplication>
#include <X11/Xlib.h>
#include <X11/keysym.h>
#include <X11/extensions/XTest.h>

int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);

Display *display = XOpenDisplay(NULL);
unsigned int keycode;
keycode = XKeysymToKeycode(display, XK_Pause);
XTestFakeKeyEvent(display, keycode, True, 0);
XTestFakeKeyEvent(display, keycode, False, 0);
XFlush(display);

return a.exec();

}@

[antonyprojr]

I found, add to .pro file: @LIBS += -lXtst -lX11@