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Message.LParam Property

Specifies the LParam field of the message.

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

public IntPtr LParam { get; set; }

Property Value

Type: System.IntPtr
The LParam field of the message.

The value of this field depends on the message. Use the LParam field to get information that is important for handling the message. LParam is typically used to store an object if it is needed by the message. Use the GetLParam method to retrieve and convert information from the LParam field into an object.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0
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