## OnTab

### Description

This callback is fired when a user clicks a tab on the property page, and when the property page is opened.

The OnTab callback is not fired if the property page is displayed as a list.

To access the property page from the callback code, use the PPG object.

### Applies To

Custom Properties implemented in a scripting language.

### Syntax

    function <property_name>_<tab_label>_OnTab()
    {
            ...
    }

    def <property_name>_<tab_label>_OnTab():
            ...

    Function <property_name>_<tab_label>_OnTab()
            ...
    End Function

    sub <property_name>_<tab_label>_OnTab
    {
            ...
    }

<property_name> is the name specified in the call to PluginRegistrar.RegisterProperty, with any spaces converted to underscores. For example, if you register a property with the name "My Property", the callback function names start with "My_Property".

<tab_label> is the label specified in the call to PPGLayout.AddTab, with any spaces converted to underscores.

### See Also

- Define
- DefineLayout
- OnChanged
- OnClicked
- OnClosed
- OnInit
- PPGEvent
- Property Callbacks