With visibility animation, an object becomes visible or invisible based on a tag value or the result of an expression. When an object is invisible, it cannot be selected. Mouse clicks pass through it to whatever object is underneath.
Visibility animation is available for all objects and overrides an object’s Visible property.
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If you use a tag’s value to control visibility animation as well as in an expression to control some other aspect of animation, when you set up visibility, set the Expression true state to Invisible. If you do not do this, the object could appear briefly in its design-time location and orientation before animating properly. |
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Type a tag name or an expression that will evaluate to numeric values at run time. An expression is a mathematical or logical equation that returns a value. It can contain tag names, constants, and mathematical, relational, logical, and bitwise operators. A tag name can be used as an expression.
Check whether the object is to be visible or invisible when the expression is true. For visibility animation, if an expression returns a numeric value of 0, the expression is false. If any non-zero value is returned, the expression is true.