State Management of controls (disabling, visibility, etc)

Public Function CannotDisableControl(c As Control) As Boolean

Will an error be thrown if this control is disabled ?

Public Sub DisableControl(c As Control, EnableState As Boolean, SetFocusTo As Control, Optional SuppressError As Boolean = False)

Disable or enable the control. If it has the focus and cannot be disabled, then set the focus to the passed alternate control before disabling

Public Sub HideControl(c As Control, VisibleState As Boolean, SetFocusTo As Control, Optional SuppressError As Boolean = False)

Show or hide the control. If it has the focus and cannot be hidden, then set the focus to the passed alternate control before hiding

Public Sub SetToggleToFalseIfDisabled(c As Control)

Set the toggle control to false if it is disabled

Public Function TrySetFocus(c As Control) As Boolean

Try to set the focus to the control.
If focus cannot be set (eg. it is disabled or hidden) then ignore the error. Returns True if focus was set successfully.