## Uses of Interface
org.eclipse.e4.ui.model.application.ui.MExpression

Packages that use MExpression
org.eclipse.e4.ui.model.application.ui: Application programming interfaces describing the Eclipse 4 state and container model elements.

### Uses of MExpression in org.eclipse.e4.ui.model.application.ui

Subinterfaces of MExpression in org.eclipse.e4.ui.model.application.ui
`interface` `MCoreExpression` A representation of the model object 'Core Expression'.
`interface` `MImperativeExpression` A representation of the model object 'Imperative Expression'.

Methods in org.eclipse.e4.ui.model.application.ui that return MExpression
`MExpression` MUIElement.`getVisibleWhen()` Returns the value of the 'Visible When' containment reference.

Methods in org.eclipse.e4.ui.model.application.ui with parameters of type MExpression
`void` MUIElement.`setVisibleWhen​(MExpression value)` Sets the value of the '`Visible When`' containment reference.