rem: dragDivider(data, event->xbutton.y);
add: dragDivider(data, event->xbutton.x, event->xbutton.y);
context: handleActionEvents(XEvent *event, void *data){        CHECK_CLASS(data, WC_SplitView);    switch (event->type) {     case ButtonPress:	if (event->xbutton.button == Button1)	    dragDivider(data, event->xbutton.y);	break;    }}