true in all cases.
This method is called to give an item the opportunity to process a mnemonic character. The method should determine whether the item is in a state to process mnemonics and if whether the given character represents a mnemonic. If so, the method should perform the action associated with the mnemonic and return true. If not, the method should return false.
This base-class implementation relies on the host System.Windows.Forms.ToolStrip control to call the Control.IsMnemonic(char, string) method to determine whether the given character matches a mnemonic in the item's text. In this case, the method raises the ToolStripItem.Click event and returns true.