FLTK::ValueInput - Text field for inputing a floating-point number
Controls a single floating point value through a combination of a FLTK::FloatInput and two up/down buttons. Other toolkits call this a "Spin Box".
The user can type a new value into the input area.
step( ) is greater or equal to
1.0 an FLTK::IntInput is used,
this prevents the user from typing anything other than digits.
step( ) is less than one then the user can type floating point values with decimal points and exponents.
The user can type any value they want into the text field,
including ones outside the
range( ) or non-multiples of the
If you want to prevent this,
make the callback function reset the value to a legal one.
By default the callback is done when the user moves the slider,
when they use up/down keys to change the number in the text,
or if they edit the text,
when they hit the Enter key or they click on another widget or put the focus on another widget.
FLTK::WHEN_CHANGED will make it do the callback on every edit of the text.
You can get at the input field by using the public "input" instance variable.
For instance you can clobber the text to a word with
Sanko Robinson <email@example.com> - http://sankorobinson.com/
Copyright (C) 2008-2010 by Sanko Robinson <firstname.lastname@example.org>
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