When an event is being processed, you may want to know the state of the [alt] key on the keyboard.

This Boolean property returns true when the [alt] key is pressed and false when it is not.

This property reflects the state of the [alt] key at the instant when the event was triggered. The user may have released the [alt] key in the meantime so you should not assume that if the [alt] key was pressed earlier on that it is still pressed when the event handler is being executed.

Warnings:

• The key may not always be labelled "ALT" on the keyboard.

Property attributes:

ReadOnly.