https://learn.microsoft.com/pt-pt/dotnet/api/system.windows.forms.control.showkeyboardcues?view=netframework-4.8.1&viewFallbackFrom=windowsdesktop-10.0
Control.ShowKeyboardCues Property (System.Windows.Forms) | Microsoft Learn
Gets a value indicating whether the user interface is in the appropriate state to show or hide keyboard accelerators.
property systemwindows formscontrolmicrosoftlearn