A SSTab control has 5 tabs. It houses many controls due to which the shortcut key for more than 1 control is the same.

The SSTab has a CheckBox & a CommandButton which reside in 2 different tabs. The shortcut key for the CheckBox is Alt+Z & that for the CommandButton is Alt+C. Alt+C happens to be the shortcut key for 5 controls but Alt+Z is the shortcut key for only the CheckBox.

When I press Alt+Z on the keyboard, strangely the focus alternates between the CheckBox & the CommandButton though Alt+Z is the shortcut key for only the CheckBox.

Pressing Alt+C correctly alternates between the 5 controls including the CommandButton which I have referred to the earlier para....that's OK but why is Alt+Z alternating between the CheckBox & the CommandButton though Alt+Z is the shortcut key for only the CheckBox?

Please note that I have assigned all the shortcut keys in the Properties dialog at design time.