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HwndHost.WndProc Method

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

Namespace:  System.Windows.Interop
Assembly:  PresentationFramework (in PresentationFramework.dll)
protected virtual IntPtr WndProc(
	IntPtr hwnd,
	int msg,
	IntPtr wParam,
	IntPtr lParam,
	ref bool handled
)

Parameters

hwnd
Type: System.IntPtr

The window handle of the hosted window.

msg
Type: System.Int32

The message to act upon.

wParam
Type: System.IntPtr

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

lParam
Type: System.IntPtr

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

handled
Type: System.Boolean

Whether events resulting should be marked handled.

Return Value

Type: System.IntPtr
The window handle of the child window.
Security noteSecurity Note

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.

.NET Framework

Supported in: 4.5.1, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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