Use the Mask property to filter characters during data input. Use the Mask property to control the entry of many types of formatted information such as telephone numbers, social security numbers, IP addresses, license keys etc.  The Mask property has effect for the following edit types: DropDownType, SpinType, DateType, MaskType, FontType, PickEditType. Call the Refresh method to update the editor's mask.

Use the MaskChar property to change the masking character.  If the Mask property is empty no filter is applied. The Mask property is composed by a combination of regular characters, literal escape characters, and masking characters. The Mask property can contain also alternative characters, or range rules. A literal escape character is preceded by a \ character, and it is used to display a character that is used in masking rules. Here's the list of all rules and masking characters:

Rule	Name	Description
#	Digit	Masks a digit character. [0-9]
x	Hexa Lower	Masks a lower hexa character. [0-9],[a-f]
X	Hexa Upper	Masks a upper hexa character. [0-9],[A-F]
A	AlphaNumeric	Masks a letter or a digit. [0-9], [a-z], [A-Z]
?	Alphabetic	Masks a letter. [a-z],[A-Z]
<	Alphabetic Lower	Masks a lower letter. [a-z]
>	Alphabetic Upper	Masks an upper letter. [A-Z]
*	Any	Mask any combination of characters.
\	Literal Escape	Displays any masking characters. The following combinations are valid: \#,\x,\X,\A,\?,\<,\>,\\,\{,\[
{nMin,nMax}	Range	Masks a number in a range. The nMin and nMax values should be numbers. For instance the mask {0,255} will mask any number between 0 and 255.
[...]	Alternative	Masks any characters that are contaied by brackets []. For instance, the [abcA-C] mask any character: a,b,c,A,B,C

The following VB sample adds an IP editor:

With Record1
    .BeginUpdate
     With .Add("IP", EXRECORDLibCtl.MaskType)
        .Mask = "{0,255}\.{0,255}\.{0,255}\.{0,255}"
        .Value = "193.226.40.161"
    End With
    .EndUpdate
End With

The following VC sample adds a Phone editor:

COleVariant vtMissing; vtMissing.vt = VT_ERROR;
CEditor editor = m_record.Add(COleVariant("Phone"), /*MaskType*/ 8, vtMissing );
editor.SetMask("(###) ### - ####");
editor.SetValue( COleVariant( "(0744) 845 - 2835" ) );
m_record.Refresh();