POINT p;
GetCursorPos(&p);

MOUSEINPUT mi;
mi.dx = (LONG) ((p.x * 65535) / screen_width);
mi.dy = (LONG) ((p.y * 65535) / screen_height);
mi.mouseData = 0;
mi.dwFlags = type | MOUSEEVENTF_ABSOLUTE;
mi.time = 0;
mi.dwExtraInfo = NULL;

INPUT input;
input.type = INPUT_MOUSE;
input.mi   = mi;

SendInput(1, &input, sizeof(INPUT));