I tried to reposition a combo box on a matrix window with no success. In button-edit mode I was able to move the respective draw/resize frame. Back in normal mode the combo box remained where it was created first.
The same problem occurs with repositioning and resizing of picture frames on matrix windows.
Perhaps that is related to the fact that manual editing of UIM objects in the plot control region is no longer supported. In any case, have you tried using labtalk commands to reposition your combo box? (object.left=xx; object.top=yy; etc.) That still worked in Origin 7 the last time I tried.
Hi Mike, object.left = xx a.s.o. has the same effect as dragging the object with the mouse in button-edit mode, i.e. the frame is repositioned. For text objects e.g. also the object is repositioned but this does not happen with image objects and combo boxes. Somewhat strange...