NativeWindow

NativeWindow

marshal by reference

---

System. Windows .Forms (system. windows .forms.dll)

class

This class encapsulates a system window but does not implement the IWin32Window interface. It provides CreateHandle() and AssignHandle() methods to wrap a native HWND, and DestroyHandle() to clean it up. You can also retrieve a NativeWindow for a particular handle with the static FromHandle() method. The Handle can be retrieved at any time.

You can also invoke the DefWndProc() with a particular Message .

You would typically use this control when you are creating a System.ComponentModel.Component (rather than a Control ) that uses a native Win32 window. An example of this in the framework is the ToolTip . It uses a NativeWindow derived class in its implementation to manage the pop-up tip window.

 public class  NativeWindow  : MarshalByRefObject {  // Public Constructors  public  NativeWindow  ();  // Public Instance Properties  public IntPtr  Handle  {get; }  // Public Static Methods  public static NativeWindow  FromHandle  (IntPtr  handle  );  // Public Instance Methods  public void  AssignHandle  (IntPtr  handle  );    public virtual void  CreateHandle  (CreateParams  cp  );    public void  DefWndProc  (ref Message  m  );    public virtual void  DestroyHandle  ();    public virtual void  ReleaseHandle  ();  // Protected Instance Methods  protected override void  Finalize  ();  // overrides object  protected virtual void  OnHandleChange  ();    protected virtual void  OnThreadException  (Exception  e  );    protected virtual void  WndProc  (ref Message  m  ); } 

Hierarchy

System.Object System.MarshalByRefObject NativeWindow