+/** A gui may need to create a region, then place it in an initial
+ * position determined by the user.
+ * When this takes place within one gui operation, we have to reset
+ * _last_position to prevent an implied move.
+ */
+void
+Region::set_initial_position (framepos_t pos)
+{
+ if (!can_move()) {
+ return;
+ }
+
+ if (_position != pos) {
+ _position = pos;
+
+ /* check that the new _position wouldn't make the current
+ length impossible - if so, change the length.
+
+ XXX is this the right thing to do?
+ */
+
+ if (max_framepos - _length < _position) {
+ _last_length = _length;
+ _length = max_framepos - _position;
+ }
+
+ recompute_position_from_lock_style ();
+ /* ensure that this move doesn't cause a range move */
+ _last_position = _position;
+ }
+
+
+ /* do this even if the position is the same. this helps out
+ a GUI that has moved its representation already.
+ */
+ send_change (Properties::position);
+}
+