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<p>Initializes absolute position handler. </p>
<p>Use this method to specify the absolute mouse area inside the rectangle (0, 0) to (width - 1, height - 1).<br />
 Optinally this method creates a queue that stores absolute positions generated by <a class="el" href="classfabgl_1_1_mouse_a5a64bba846867e29857302fc8fa1c818.html#a5a64bba846867e29857302fc8fa1c818" title="Updates absolute position from the specified mouse delta event. ">updateAbsolutePosition()</