Matlab Listbox GUI No Selection
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I asked previously about setting the listbox properties so that when a list of files is loaded, the first one is not selected. I was told there was no way around that, which basically concluded as well. However, after chance, I determined that if I clicked in the empty box, then loaded the file names in the box, none of them would be selected. Is there anyway to "fake" a mouse click? It only happens if I click, or double click inside the listbox. I was trying something along the lines of:
set(handles.figure1,'SelectionType','open')
I tried that inside of (files is the listbox tag-this function executes on selection change in filebox:
function files_Callback(hObject, eventdata, handles)
Any hope with this?
采纳的回答
per isakson
2013-1-25
编辑：per isakson
2013-1-25
I have trouble understanding your question. Isn't there one negation too many? However,
- regarding "fake mouse click" read about awt.robot at http://undocumentedmatlab.com/blog/gui-automation-robot/. IMO not worth the trouble.
- regarding "none selected" with code
set( listbox_handle, 'Value', [] )
- regarding "none selected" interactively I've failed an added the string "- none -" at the top of the list. Selecting that row triggers
set( listbox_handle, 'Value', [] )
.
With R2012a on Windows 7
3 个评论
Walter Roberson
2013-1-25
In R2012a and later on OS-X, set( listbox_handle, 'Value', [] ) when String property is non-empty, results in
Warning: single-selection listbox control requires a scalar Value
Control will not be rendered until all of its parameter values are valid
Jan
2013-1-25
@Walter: Does the warning appear, when multi-selection is enabled?
set(listbox_handle, 'Min', 0, 'Max', 2, 'Value', [])
Jared
2013-1-25
更多回答（2 个）
Walter Roberson
2013-1-25
R2012a on OS-X Lion, I do not get that behavior. If I create a uicontrol style listbox, at the command line, then click in it, and then set() its String, I get
Warning: single-selection listbox control requires a scalar Value
Control will not be rendered until all of its parameter values are valid
2 个评论
Walter Roberson
2013-1-25
Ah, just a thought; this is only a problem if multi-select is not on. Perhaps you could take advantage of that?
Jared
2013-1-25
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