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

From: Pantxo Diribarne
Subject: [Octave-bug-tracker] [bug #42490] helpdlg does not return a proper graphics handle
Date: Tue, 2 Oct 2018 15:51:00 -0400 (EDT)
User-agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0

Update of bug #42490 (project octave):

                Category:                Plotting => GUI                    
                  Status:               Postponed => Patch Submitted        


Follow-up Comment #7:

I attached a preliminary patch in which I rewrote msgbox.m to make use of
graphics objects and return a handle to a figure (same for helpdlg, errordlg
and warndlg which are msgbox wrappers).

I am not sure about how to handle icon data. Since those images are for use in
gui scripts, I put the corresponding png files (extracted from Tango theme) in
the script/gui directory. For this I tried to blindly copy how "default.img"
file is handled in the build system but it doesn't look like it works:

I can do 

im = imread ("default.img");


## This doesn't work
im = imread ("__error-icon__.png");
##-> error: imread: unable to find file '__error-icon__.png'

## This works
im = imread (which ("__error-icon__.png"));

Can someone test the patch (see "demo msgbox").


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