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CommonDialog.OwnerWndProc Method

Defines the owner window procedure that is overridden to add specific functionality to a common dialog box.

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

[SecurityPermissionAttribute(SecurityAction.LinkDemand, Flags = SecurityPermissionFlag.UnmanagedCode)]
[SecurityPermissionAttribute(SecurityAction.InheritanceDemand, Flags = SecurityPermissionFlag.UnmanagedCode)]
protected virtual IntPtr OwnerWndProc(
	IntPtr hWnd,
	int msg,
	IntPtr wparam,
	IntPtr lparam


Type: System.IntPtr

The window handle of the message to send.

Type: System.Int32

The Win32 message to send.

Type: System.IntPtr

The wparam to send with the message.

Type: System.IntPtr

The lparam to send with the message.

Return Value

Type: System.IntPtr
The result of the message processing, which is dependent on the message sent.

Control is transferred here when messages are sent to the owner window of the common dialog box. Inheriting classes can override this method to add specific functionality to a common dialog box.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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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