ToolStripItem.IsInputKey Method (Keys)
Determines whether the specified key is a regular input key or a special key that requires preprocessing.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
Call the IsInputChar method during window-message preprocessing to determine whether the specified key is a regular input key that should be sent directly to the ToolStripItem or a special key (such as PAGE UP, PAGE DOWN, ENTER, ESC, TAB, or arrow keys) that should be preprocessed. In the latter case, the key is sent to the ToolStripItem only if it is not consumed by the preprocessing phase.
Available since 2.0