Occurs when the user selects the menu or toolbar Page Settings - Brightness.
Syntax
Visual Basic
Public Event OnImageBrightnessStart()
Remarks
When the user clicks on the menu or toolbar button for Page Settings - Brightness, it will first
generate the "OnImageBrightnessStart" event, displays the brightness adjustment dialog,
then generate the "OnImageBrightnessFinish" event after the user closes the dialog.
