The IsInputChar method is called during window message preprocessing to determine whether the given input character should be preprocessed or sent directly to the ToolStrip. If the IsInputChar method returns true, the specified character is sent directly to the ToolStrip. However, if the method returns false, the character is preprocessed and only sent to the 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.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)