How I can check the button if enabled or disabled in MATLAB?

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Eliza 2017-12-7

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回答： Walter Roberson 2017-12-10

I wanna use if condition to check if the button is Enable or Disable can I do that ?

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Jan 2017-12-7

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编辑：Jan 2017-12-9

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Actually the question is far too lean to be answered reliably. But a guess:

if handles.Checkbox1.Value

This is sufficient already, when I assume, that handles.Checkbox1 is the handle of your checkbox. Examine the tag of the checkbox or the handles struct to find the real name in your code.

[EDITED] The solution with R2015b and teh property "Enable" is:

if strcmp(handles.Button1.Enable, 'off')

If you handles.msg is a uint8, it is not a valid button handle.

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Eliza 2017-12-9

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Here is the properties of msg

(msg) with properties:
              Style: 'pushbutton'
             String: 'First'
    BackgroundColor: [0.9400 0.9400 0.9400]
           Callback: [function_handle]
              Value: 1
           Position: [55.2000 16.6923 22 2.6923]
              Units: 'characters'
BackgroundColor: [0.9400 0.9400 0.9400]
           BeingDeleted: 'off'
             BusyAction: 'queue'
          ButtonDownFcn: ''
                  CData: []
               Callback: [function_handle]
               Children: [0x0 handle]
              CreateFcn: ''
              DeleteFcn: ''
                 Enable: 'on'
                 Extent: [0 0 14.8000 1.6154]
              FontAngle: 'normal'
               FontName: 'MS Sans Serif'
               FontSize: 10
              FontUnits: 'points'
             FontWeight: 'bold'
        ForegroundColor: [0 0 0]
       HandleVisibility: 'on'
    HorizontalAlignment: 'center'
          Interruptible: 'on'
            KeyPressFcn: ''
          KeyReleaseFcn: ''
             ListboxTop: 1
                    Max: 1
                    Min: 0
                 Parent: [1x1 Panel]
               Position: [55.2000 16.6923 22 2.6923]
             SliderStep: [0.0100 0.1000]
                 String: 'Watermark'
                  Style: 'pushbutton'
                    Tag: 'msg'
          TooltipString: ''
                   Type: 'uicontrol'
          UIContextMenu: [0x0 GraphicsPlaceholder]
                  Units: 'characters'
               UserData: [1x0 double]
                  Value: 1
                Visible: 'on'

Jan 2017-12-10

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@Eliza: Why do you post the properties? Note, that this is a contradiction to what you have posted before:

class(handles.msg)
ans =
  uint8

Please try to find out, why your handles.msg is sometimes an UINT8 and sometimes a graphics handle. Perhaps you overwrite it anywhere? But if it is a graphics handle, my suggestion should work directly. Did you try it?

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