MnemonicTrigger
Description:
[ CCode ( has_construct_function = false ,  type = "GtkShortcutTrigger*" ) ]
public MnemonicTrigger (uint keyval)
  public MnemonicTrigger (uint keyval)
Creates a `GtkShortcutTrigger` that will trigger whenever the key with the given keyval is pressed and mnemonics have been 
      activated.
Mnemonics are activated by calling code when a key event with the right modifiers is detected.
Parameters:
| keyval | The keyval to trigger for | 
Returns:
| A new `GtkShortcutTrigger` |