How do I program a callback on a UICONTROL?
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I want to present several graphs such that when I click a push button beside a graph, the next in the series appears.
I tried the following code, but the push button those not influence the running.
PushButton = uicontrol(gcf,'Style', 'pushbutton', 'String', 'Next',
'Position', [300 10 30 30], 'Callback', 'pause');
How should I do this?
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采纳的回答
Walter Roberson
2011-2-10
More than what you asked for...
PushButton = uicontrol(gcf, 'Style', 'push', 'String', 'Next', ...
'Position', [300 10 30 30], ...
'CallBack', @GraphCreator, ...
'UserData', 0);
function GraphCreator(PushButton, EventData)
newiter = get(PushButton, 'UserData') + 1;
if newiter > N
wd = warndlg('Reached end of graphs. Push again to start over');
uiwait(wd, 30); %30 second timeout on warning
if ishandle(wd) %only true if timed out
delete(wd)
end
set(PushButton, 'UserData', 0);
return
end
set(PushButton, 'UserData', newiter);
InputData = load(FileName{newiter});
fn = fieldnames(InputData);
thisdataname = fn{1};
create_graph(S.(thisdataname));
end
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更多回答(2 个)
Jan
2011-2-9
Try this at first:
PushButton = uicontrol(gcf,'Style', 'pushbutton', ...
'String', 'Next', ...
'Position', [300 10 30 30], ...
'Callback', @yourCallback);
function yourCallback(ObjH, EventData)
% ObjH is the button handle
FigH = ancestor(ObjH, 'figure'); % or: gcbf
set(FigH, 'Color', rand);
Then insert something more useful in the callback function. BTW: Searching in the documentation is always a good point to start from:
docsearch callback
5 个评论
K VdB
2016-10-24
When I run the script noga cohen gave it says:
''All functions in a script must be closed with an 'end'.
When I close the script with an end it says:
''Function definitions are not permitted in this context.''
Walter Roberson
2016-10-24
Only R2016b and later permit function definitions inside a .m file that does not start with the word "function" or "classdef" .
Anyhow: store the function inside GraphCreator.m and have the assignment to PushButton in a different routine.
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