/* gcc mouse.c -framework CoreFoundation -framework ApplicationServices */

#define IS_MACOSX
#include <CoreFoundation/CoreFoundation.h>
#include <ApplicationServices/ApplicationServices.h>

typedef struct {
  float x;
  float y;
} MMPoint;

MMPoint MMPointFromCGPoint(CGPoint point) {
  MMPoint dummy = { point.x, point.y };
  return dummy;
}

MMPoint getMousePos()
{
#if defined(IS_MACOSX)
    CGEventRef event = CGEventCreate(NULL);
    CGPoint point = CGEventGetLocation(event);
    CFRelease(event);

    return MMPointFromCGPoint(point);
#elif defined(USE_X11)
    int x, y; /* This is all we care about. Seriously. */
    Window garb1, garb2; /* Why you can't specify NULL as a parameter */
    int garb_x, garb_y;  /* is beyond me. */
    unsigned int more_garbage;

    Display *display = XGetMainDisplay();
    XQueryPointer(display, XDefaultRootWindow(display), &garb1, &garb2,
              &x, &y, &garb_x, &garb_y, &more_garbage);

    return MMPointMake(x, y);
#elif defined(IS_WINDOWS)
    POINT point;
    GetCursorPos(&point);

    return MMPointFromPOINT(point);
#endif
}

int main() {
  MMPoint pt = getMousePos();
  printf("%f %f\n", pt.x, pt.y);
}