# LockCustProp Element

Determines whether the user can add, delete, or modify custom properties in the user interface (UI) by using the Define Custom Properties dialog box. To open this dialog box, click Custom Properties on the Shape menu or click Define Properties on the shortcut menu in the Custom Properties window. (To open the Custom Properties window, click Custom Properties Window on the View menu.)

Value | Description
--- | ---
TRUE (1) | The Define button does not appear in the Custom Properties dialog box, and the Define Properties command on the shortcut menu in the Custom Properties window is disabled.
FALSE (0) | The Define button appears in the Custom Properties dialog box, and the Define Properties command on the shortcut menu in the Custom Properties window is enabled (the default).

## Syntax

    <LockCustProp>
        [Unit]
        [F]
        [Err]>
    </LockCustProp>

## Attributes

Unit

Optional string. Represents a unit of measure. The default is NUM. For details about NUM, see Units of measure.

F

Optional string. Represents the element's formula. This attribute can contain one of the following strings: "someFormula" if the formula exists locally, "No Formula" if the formula is locally deleted or blocked, or "Inh" if the formula is inherited.

If the attribute is not present, the element's formula is a simple constant. For example, <element>5</element>.

Err

Optional string. Indicates that the formula evaluates to an error. The value of Err is the current value (an error message string); the value of the element is the last valid value.

## Element properties

Property | Value
--- | ---
Name | LockCustProp
Minimum Occurrences | 0
Maximum Occurrences | 1

## Element information

Parent elements

Protection

Child elements

None

## Remarks

A value of TRUE in the LockCustProp element does not prevent a user from changing the value of a custom property or changing the Custom Properties section in the ShapeSheet window.

The LockCustProp element is relevant only when contained in a Shape or StyleSheet element. It is ignored when contained in a DocumentSheet or PageSheet element.

## See also

LockCustProp cell (Protection section)

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