Name
Message
Synopsis
This value type wraps a Win32 message, and is used in message
filtering (through the Application.AddMessageFilter()
method) and Control.WndProc()
message
processing. Obviously, this is very closely bound to the operating
system, and you should only use this sort of message processing in
interop applications—typically, when you are wrapping a Win32
control for your own purposes. You can retrieve the
HWnd
, LParam
,
WParam
, and Msg
ID. You can
also set the Result
to be returned to Windows if
you handle the message.
You shouldn’t create instances of this class
directly, but instead use the static Create()
factory method, which ensures that the message is properly
initialized.
public struct Message { // Public Instance Properties public IntPtr HWnd{set; get; } public IntPtr LParam{set; get; } public int Msg{set; get; } public IntPtr Result{set; get; } public IntPtr WParam{set; get; } // Public Static Methods public static Message Create(IntPtr hWnd, int msg, IntPtr wparam, IntPtr lparam); // Public Instance Methods public override bool Equals(object o); // overrides ValueType public override int GetHashCode(); // overrides ValueType public object GetLParam(Type cls); public override string ToString(); // overrides ValueType }
Hierarchy
System.Object
→ System.ValueType → Message
Passed To
Multiple types
Get .NET Windows Forms in a Nutshell now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.