How to indicate that GUI is busy running?

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Kyle
Kyle 2011-7-12
编辑： Walter Roberson 2020-8-31
I would like to know how to indicate in my GUI that MATLAB is currently busy running some piece of code (e.g. a long computation). Currently, there is no indication in the GUI that the code is running, causing the user to wonder whether it is working or just not responsive.

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采纳的回答

Titus Edelhofer
Titus Edelhofer 2011-7-12
Hi Kyle,
two typical main ways to do this: in your callback do
set(handles.figure1, 'pointer', 'watch')
drawnow;
% your computation
set(handles.figure1, 'pointer', 'arrow')
This shows the hour glass during the callback. If the callback indeed takes longer, use function "waitbar" to indicate progress ...
Titus
  4 个评论
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Aash
Aash 2018-5-4
I tried doing this and it is giving this error Error using matlab.ui.control.UIControl/set There is no pointer property on the UIControl class.
Error in Control>error_Callback (line 435) set(handles.error, 'pointer', 'watch')
What does it mean?
Walter Roberson
Walter Roberson 2020-7-8
You can only set the Pointer for a figure, not for a uicontrol.
fig = ancestor(handles.error, 'figure');
oldpointer = get(fig, 'pointer');
set(fig, 'pointer', 'watch');
drawnow;
% your computation goes here
set(fig, 'pointer', oldpointer)

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更多回答（3 个）

Kyle
Kyle 2011-7-12
btw how to use function "waitbar" to indicate progress.
does matlab know to compute the time its going to be busy?
Aash
Aash 2018-5-9
My pointer is changing to the loading while computation but it isnt coming back to the orignal arrow after the code stops executing. Here is my code
oldpointer = get(handles.figure1, 'pointer');
set(handles.figure1, 'pointer', 'watch')
drawnow;
%code that runs
set(handles.figure1, 'pointer', oldpointer)
  2 个评论
Ahmer Shahid
Ahmer Shahid 2019-1-13
How can I use this in app designer?
it's giving me error.
Error using matlab.ui.Figure/set
Functionality not supported with figures created with the uifigure function. For more information, see Graphics Support in App Designer.
syed Rahim
syed Rahim 2020-6-12
isn't handles a GUIDE only graphics structure. For APP designer it should be App.Figure1.

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Jan Siegmund
Jan Siegmund 2020-7-8
编辑：Jan Siegmund 2020-8-31
Users that looked for a waitbar style solution should have a look at https://de.mathworks.com/help/matlab/ref/uiprogressdlg.html which is basically waitbar but with an up to date look.

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