setEnabled(false) in new GenericDialog

Posted by Michael Doube on Apr 14, 2010; 12:43am
URL: http://imagej.273.s1.nabble.com/setEnabled-false-in-new-GenericDialog-tp3688595.html

Hi All,

I have a TextField and a Checkbox in a GenericDialog.  I want the TextField to be setEnabled(false) , i.e. greyed out, when the Checkbox is false.  This I can accomplish using a DialogListener when the user clicks on the Checkbox.  But I want the default setting to be that the Checkbox is false and the TextField is correspondingly greyed out - i.e. before user input changes the state of any of the Components, triggering the Listener.

I've tried getting the Vector of numeric fields, then getting the correct element using both get() and elementAt(), and setEnabled(false), directly before shwoDialog() but it doesn't seem to work.

...
gd.addCheckbox("Do it", false)
gd.addNumericField("How many times?", 1, 0); //to be greyed out initially
...
Vector<?> numbers = gd.getNumericFields();
TextField num = (TextField) numbers.get(3) // or .elementAt(3);
num.setEnabled(false);
showDialog();

Any ideas?  I'm on Ubuntu 10.04, JRE 1.6 19, IJ 1.43s

Michael