How to: Use Extensions in a Project
Different types of extensions are used in different ways. Custom data type extensions appear in the Type drop-down list in the Data designer when a compatible data type is selected. For example, when a Binary data type is selected, the Image custom data type extension is available.
Custom control extensions appear in Screen Content Tree drop-down lists in the Screen designer. For example, a custom Masked Edit control would appear wherever a TextBox is available. Theme and shell extensions can be used as described in the following procedures.
Extensions are only available if they are enabled in the Extensions tab of the Application designer. For more information, see How to: Add or Remove Extensions.
To apply a theme extension
In Solution Explorer, double-click Properties to open the Application designer.
In the Application designer, click the General Properties tab.
Expand the Theme drop-down list.
A list of available theme extensions appears in the list.
Click the theme extension that you want to apply.
To apply a shell extension
In the General Properties tab of the Application designer, expand the Shell drop-down list.
A list of available shell extensions appears in the list.
Click the shell extension that you want to apply.