Occurs when the user selects the menu or toolbar Page Settings - Mirror Horizontal.
Syntax
Visual Basic
Public Event OnImageMirrorHorizontalStart()
Remarks
When the user clicks on the menu or toolbar button for Page Settings - Mirror Horizontal, it
will first generate the "OnImageMirrorHorizontalStart" event, perform the mirror horizontal
operation, then generate the "OnImageMirrorHorizontalFinish" event.
