GCHandle.FromIntPtr Method (IntPtr)

 

Returns a new GCHandle object created from a handle to a managed object.

Namespace:   System.Runtime.InteropServices
Assembly:  mscorlib (in mscorlib.dll)

[<SecurityCriticalAttribute>]
static member FromIntPtr : 
        value:nativeint -> GCHandle

Parameters

value
Type: System.IntPtr

An IntPtr handle to a managed object to create a GCHandle object from.

Return Value

Type: System.Runtime.InteropServices.GCHandle

A new GCHandle object that corresponds to the value parameter.

Exception Condition
InvalidOperationException

The value of the value parameter is Zero.

The following code example shows an App class that creates a handle to a managed object using the GCHandle.Alloc method, which prevents the managed object from being collected. A call to the EnumWindows method passes a delegate and a managed object (both declared as managed types, but not shown), and casts the handle to an IntPtr object. The unmanaged function passes the type back to the caller as a parameter of the callback function.

No code example is currently available or this language may not be supported.

SecurityCriticalAttribute

requires full trust for the immediate caller. This member cannot be used by partially trusted or transparent code.

Universal Windows Platform
Available since 8
.NET Framework
Available since 2.0
Portable Class Library
Supported in: portable .NET platforms
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1
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