HwndHost.WndProc(IntPtr, Int32, IntPtr, IntPtr, Boolean) Method

Reference

Definition

Namespace:: System.Windows.Interop

Assembly:: PresentationFramework.dll

Important

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When overridden in a derived class, accesses the window process (handle) of the hosted child window.

protected:
 virtual IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, bool % handled);

[System.Security.SecurityCritical]
protected virtual IntPtr WndProc (IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled);

protected virtual IntPtr WndProc (IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled);

[<System.Security.SecurityCritical>]
abstract member WndProc : nativeint * int * nativeint * nativeint * bool -> nativeint
override this.WndProc : nativeint * int * nativeint * nativeint * bool -> nativeint

abstract member WndProc : nativeint * int * nativeint * nativeint * bool -> nativeint
override this.WndProc : nativeint * int * nativeint * nativeint * bool -> nativeint

Protected Overridable Function WndProc (hwnd As IntPtr, msg As Integer, wParam As IntPtr, lParam As IntPtr, ByRef handled As Boolean) As IntPtr

Parameters

hwnd: IntPtr
nativeint

The window handle of the hosted window.

msg: Int32

The message to act upon.

wParam: IntPtr
nativeint

Information that may be relevant to handling the message. This is typically used to store small pieces of information, such as flags.

lParam: IntPtr
nativeint

Information that may be relevant to handling the message. This is typically used to reference an object.

handled: Boolean

Whether events resulting should be marked handled.

Returns

IntPtr

nativeint

The window handle of the child window.

Attributes: SecurityCriticalAttribute

Remarks

Important

This type or member is not available in the Internet security zone.

Notes to Inheritors

The base implementation in HwndHost does not return a practical process, but will return IntPtr.Zero as a failsafe.

Applies to