Creating Graphical User Interfaces

Check Boxes

Check boxes generate an action when checked and indicate their state as checked or not checked. Check boxes are useful when providing the user with a number of independent choices that set a mode (e.g., display a toolbar or generate callback function prototypes).

The Value property indicates the state of the check box by taking on the value of the Max or Min property (1 and 0 respectively by default):

• Value = Max, box is checked.
• Value = Min, box is not checked.

You can determine the current state of a check box from within its callback by querying the state of its Value property, as illustrated in the following example:

• function checkbox1_Callback(hObject, eventdata, handles)
  if (get(hObject,'Value') == get(hObject,'Max'))
      % then checkbox is checked-take approriate action
  else
      % checkbox is not checked-take approriate action
  end
  

Radio Buttons

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