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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.

.NET Framework

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

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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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