Processes keyboard input at the keydown message level.
Assembly: WindowsBase (in WindowsBase.dll)
- Type: System.Windows.Interop.MSG%
The message and associated data. Do not modify this structure. It is passed by reference for performance reasons only.
- Type: System.Windows.Input.ModifierKeys
Return ValueType: System.Boolean
true if the message was handled by the method implementation; otherwise, false.
The message must either be WM_KEYDOWN or WM_SYSKEYDOWN.
If the component is unable to handle the input translations and has child components that might have translations, it typically calls method on the child component that holds the current focus before returning a result.
If the message cannot be handled immediately, you can re-dispatch it from within the implementation if necessary, and then return false.
A primary scenario for translating accelerator keys is handling the VK_TAB keydown message and determining whether to set focus within the component, to call TabInto to a child component, or to call OnNoMoreTabStops on the parent site because the tab sequence has reached the beginning or end bounds. Certain components may choose to not handle the tab key in this fashion.
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.