MATLAB: Do I get a “Could not find appropriate function” when starting the GUIDE created GUI in MATLAB 7.7 (R2008b)

MATLAB

I have a GUI that I have created with GUIDE and I have modified the program file as well. When I run the GUI I get the message:

 Warning: Could not find appropriate function on path loading function handle [path to file]>@(hObject,eventdata)[name of file]('axes_CreateFcn',hObject,eventdata,guidata(hObject))

Best Answer

This warning message indicates that the data embedded in the FIG-file about where a certain callback is stored is outdated for some reason. This could possibly occurr if you rename the .M file and .FIG file instead of using "Save As" from within GUIDE.

To resolve the issue, open the GUI in GUIDE. Double click on the component which is mentioned in the warning message (in the example it would be 'axes') to open the Property Inspector. In the Property Inspector find the callback which is causing the warning (in this case 'CreateFcn'. Click on this property entry to edit it. There should be a dialog box displayed that says that the callback was manually modified. It will ask if you would like to generate a new callback; select "Yes". This will relink the callback location in the FIG-file.

Related Solutions

MATLAB: Error :Input argument “handles” is undefined with the axes

Only the object and the event are automatically added as input arguments to a callback. If you want handles to be passed as well you need to arrange that. When you use GUIDE to create graphic objects, it automatically puts appropriate code as the callback.

In your situation, where you are using only a single figure, I would recommend removing handles from the argument list, leaving the uicontrol() the way it is, and adding the following as the first line of code in the callback:

handles = guidata(hObject);

MATLAB: Am I unable to view the callbacks for the GUI components in the Editor when I click on them in the GUIDE property inspector in MATLAB 7.6 (R2008a)

This behavior can manifest if a GUIDE FIG-file is copied to create a new GUI. When the new FIG-file is opened in GUIDE, the callback properties of the GUI components still point to the old GUI program file. Therefore, if a new component is added, its callbacks will not be automatically created in the GUI program file and attempts to view the callback functions will be unsuccessful.

To correctly copy an existing GUI to a new GUI, open it up in GUIDE and choose "File > Save As". This will create a new GUI program file and modify all the callbacks of the GUI components.

Best Answer

Related Solutions

MATLAB: Error :Input argument “handles” is undefined with the axes

MATLAB: Am I unable to view the callbacks for the GUI components in the Editor when I click on them in the GUIDE property inspector in MATLAB 7.6 (R2008a)

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