[Octave-bug-tracker] [bug #42490] helpdlg does not return a proper graphics handle

[H. G.]

URL:
  <http://savannah.gnu.org/bugs/?42490>

                 Summary: helpdlg does not return a proper graphics handle
                 Project: GNU Octave
            Submitted by: hardy
            Submitted on: Mon 02 Jun 2014 01:36:18 PM GMT
                Category: Plotting
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Matlab Compatibility
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.8.1
        Operating System: Any

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Details:

This behavior is fully documented in the Octave doc. But it is incompatible to
Matlab.

Here is an (artificial) example that works under Matlab and does not under
Octave: 


clear all;
h = helpdlg('Are you ready?') 
uiwait(h)
display('Lets start');


The difference seems to be that
* helpdlg does NOT return a proper graphics handle of its own window, but
always returns the value 1  (as is said in the manual)
* uiwait can only work with proper graphics handles (which is fine, but
generates an error message in this case)





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