HandleSelectStart(w, event, params, num_params) Widget w; XEvent *event;			 String *params GCC_UNUSED; Cardinal *num_params GCC_UNUSED;
HandleSelectStart( Widget w, XEvent *event,			 String *params GCC_UNUSED, Cardinal *num_params GCC_UNUSED)
HandleSelectStart(w, event, params, num_params)Widget w;XEvent *event;			/* must be XButtonEvent* */String *params GCC_UNUSED;Cardinal *num_params GCC_UNUSED;{	register TScreen *screen;	int startrow, startcol;	if (!IsXtermWidget(w))		return;	screen = &((XtermWidget)w)->screen;	firstValidRow = 0;	lastValidRow  = screen->max_row;	PointToRowCol(event->xbutton.y, event->xbutton.x, &startrow, &startcol);	do_select_start (w, event, startrow, startcol);}