GCHandle::FromIntPtr Method (IntPtr)
Returns a new GCHandle object created from a handle to a managed object.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- value
-
Type:
System::IntPtr
An IntPtr handle to a managed object to create a GCHandle object from.
Return Value
Type: System.Runtime.InteropServices::GCHandleA 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.
requires full trust for the immediate caller. This member cannot be used by partially trusted or transparent code.
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