uimenu.callback_type == -2 ?

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Samuel GOUGEON Samuel GOUGEON
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uimenu.callback_type == -2 ?

Hello,

While i was updating the uimenu_properties page, noticeably to document .callback_type,
i noticed that one of the Figures submenu has a .callback_type set to -2 (see below).
I have found nothing in the uicontrol doc about the meaning of this value.

Would you know  what it is, to interpret .callback?

Thanks
Samuel

--> get(0).showhiddenhandles = "on";
--> gcf().children(4).children(1)
 ans  =

Handle of type "uimenu" with properties:
========================================
Parent: uimenu
Children: []
Enable = "on"
Foregroundcolor = [0,0,0]
Label = "&Rotation 2D/3D"
Handle_Visible = "off"
Visible = "on"
Callback = "set(get_figure_handle([SCILAB_FIGURE_ID]), ''info_message'', ''Right click and drag to rotate.'')"
Callback_Type =
-2
Checked =  "off"
Icon =  "transform-rotate"
Userdata = []
Tag = ""


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