## NumericalEntry

NumericalEntry — Defines a widget to enter numerical values without any boundary or precision constrains.

## Synopsis

                        NumericalEntry;
    GtkWidget*          numericalEntry_new                  (double value);
    double              numericalEntryGet_value             (NumericalEntry *numericalEntry);
    void                numericalEntrySet_value             (NumericalEntry *numericalEntry,
                                                             double value);

## Object Hierarchy

      GObject
       +----GInitiallyUnowned
             +----GtkObject
                   +----GtkWidget
                         +----GtkEntry
                               +----NumericalEntry

## Implemented Interfaces

NumericalEntry implements AtkImplementorIface, GtkBuildable, GtkCellEditable and GtkEditable.

## Signals

      "value-changed"                                  : Run First / Action

## Description

This widget is based on the GtkEntry widget but behaves more like a GtkSpinButton is fact. It is designed to enter numerical values, but without any boundary or precision constrains. One can use either plain or scientific notations.

## Details

### NumericalEntry

    typedef struct _NumericalEntry NumericalEntry;

Short form for a NumericalEntry_struct structure.

### numericalEntry_new ()

    GtkWidget*          numericalEntry_new                  (double value);

A NumericalEntry widget is like a GtkEntry widget, but it only accepts double precision values (written in plain format, e.g. 1.23456, or scientific notation, e.g. 1.2345e6). The widget can't be blank and there is always a value printed in it. If the user erase the current value or enter something that is not a recognised double precision value, the widget returns to its previous valid value.

`value` : | the initial value.
Returns : | a newly created NumericalEntry widget.

### numericalEntryGet_value ()

    double              numericalEntryGet_value             (NumericalEntry *numericalEntry);

You can get the value contained in the given `numericalEntry` using this method.

`numericalEntry` : | a NumericalEntry widget.
Returns : | the double precision value printed in the NumericalEntry.

### numericalEntrySet_value ()

    void                numericalEntrySet_value             (NumericalEntry *numericalEntry,
                                                             double value);

Use this method to set the value for the given numericalEntry widget.

`numericalEntry` : | a NumericalEntry widget ;
`value` : | a double precision value.

## Signal Details

### The `"value-changed"` signal

    void                user_function                      (NumericalEntry *entry,
                                                            gdouble         oldValue,
                                                            gpointer        user_data)      : Run First / Action

This signal is emitted when a new valid numerical value is entered.

`entry` : | the NumericalEntry that emits the signal ;
`oldValue` : | the previous value.
`user_data` : | user data set when the signal handler was connected.

Since 3.1