true if the character should be sent directly to the item and not preprocessed; otherwise, false.
The ToolStrip.IsInputChar(char) method is called during window message preprocessing to determine whether the given input character should be preprocessed or sent directly to the System.Windows.Forms.ToolStrip. If the ToolStrip.IsInputChar(char) method returns true, the specified character is sent directly to the System.Windows.Forms.ToolStrip. However, if the method returns false, the character is preprocessed and only sent to the System.Windows.Forms.ToolStrip if it is not consumed by the preprocessing phase. The preprocessing of a character includes checking whether the character is a mnemonic of another control.