Control::ProcessKeyEventArgs Method
Processes a key message and generates the appropriate control events.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
[SecurityPermissionAttribute(SecurityAction::LinkDemand, Flags = SecurityPermissionFlag::UnmanagedCode)] [SecurityPermissionAttribute(SecurityAction::InheritanceDemand, Flags = SecurityPermissionFlag::UnmanagedCode)] protected: virtual bool ProcessKeyEventArgs( Message% m )
Parameters
- m
- Type: System.Windows.Forms::Message%
A Message, passed by reference, that represents the window message to process.
Return Value
Type: System::Booleantrue if the message was processed by the control; otherwise, false.
This method is called when a control receives a keyboard message. The method is responsible for generating the appropriate key events for the message by calling the OnKeyPress, OnKeyDown, or OnKeyUp methods. The m parameter contains the window message that must be processed. Possible values for the Message::Msg property are WM_CHAR, WM_KEYDOWN, WM_SYSKEYDOWN, WM_KEYUP, WM_SYSKEYUP, and WM_IME_CHAR.
Notes to Inheritors:When overriding the ProcessKeyEventArgs method in a derived class, a control should return true to indicate that it has processed the key. For keys that are not processed by the control, the result of calling the base class's ProcessKeyEventArgs method should be returned. Controls will seldom, if ever, need to override this method.
- UIPermission
for all windows for inheriting classes to call this method. Associated enumeration: AllWindows value of UIPermissionWindow.
- SecurityPermission
for the immediate caller to call unmanaged code. Associated enumeration: UnmanagedCode
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
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.