WindowScrollwheelFcn in a GUI

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Stelios Fanourakis 2018-6-10

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https://ww2.mathworks.cn/matlabcentral/answers/404985-windowscrollwheelfcn-in-a-gui

评论： Rik 2019-9-25

I have a GUI consisted of a slider, a press button and 4 axes. I have placed the WindowScrollWheelFcn and I get the following error

"Warning: Setting the "WindowScrollWheelFcn" property is not permitted while this mode is active. 
> In matlab.uitools.internal.uimodemanager>localModeWarn (line 211)
  In matlab.uitools.internal.uimodemanager>@(obj,evd)(localModeWarn(obj,evd,hThis)) (line 86)
  In fresh>Load_image_Callback (line 320)
  In gui_mainfcn (line 95)
  In fresh (line 42)
  In matlab.graphics.internal.figfile.FigFile/read>@(hObject,eventdata)fresh('Load_image_Callback',hObject,eventdata,guidata(hObject)) "

Any help?

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采纳的回答

Rik 2018-6-10

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https://ww2.mathworks.cn/matlabcentral/answers/404985-windowscrollwheelfcn-in-a-gui#answer_324055

You have the target figure open. You probably have the selector mode on (the mouse cursor icon in the menu bar), or maybe the pan mode. You need to have the current mode turned off if you want to initialize some callback that may interfere with it.

The only time I've seen this error myself, is when I wanted to set a ButtonDownFcn while the selector mode was on.

This is an example of why it is generally a good idea to have a GUI as locked down as you can while you set all the properties. (I often even set Visisble to off when initializing to circumvent any user interaction messing up the settings)