How to indicate that GUI is busy running?

Question

Kyle 2011-7-12

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https://ww2.mathworks.cn/matlabcentral/answers/11411-how-to-indicate-that-gui-is-busy-running

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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Answer 1

Titus Edelhofer 2011-7-12

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https://ww2.mathworks.cn/matlabcentral/answers/11411-how-to-indicate-that-gui-is-busy-running#answer_15566

在 MATLAB Online 中打开

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

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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 2020-7-8

在 MATLAB Online 中打开

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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Answer 2

Kyle 2011-7-12

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https://ww2.mathworks.cn/matlabcentral/answers/11411-how-to-indicate-that-gui-is-busy-running#answer_15607

btw how to use function "waitbar" to indicate progress.

does matlab know to compute the time its going to be busy?

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Sean de Wolski 2011-7-12

You have to manually update waitbar - look at the example in

doc waitbar

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Answer 3

Aash 2018-5-9

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https://ww2.mathworks.cn/matlabcentral/answers/11411-how-to-indicate-that-gui-is-busy-running#answer_319392

在 MATLAB Online 中打开

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)

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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 2020-6-12

isn't handles a GUIDE only graphics structure. For APP designer it should be App.Figure1.

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Answer 4

Jan Siegmund 2020-7-8

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https://ww2.mathworks.cn/matlabcentral/answers/11411-how-to-indicate-that-gui-is-busy-running#answer_463076

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.