true if the character was processed as a mnemonic by the control; otherwise, false.
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.
The System.Windows.Forms.ToolStripLabel 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 selects the item associated with the label, or raises the ToolStripItem.Click event if the item cannot be selected.