Marshal.GetFunctionPointerForDelegate Method
Converts a delegate into a function pointer that is callable from unmanaged code.
Namespace: System.Runtime.InteropServices
Assembly: mscorlib (in mscorlib.dll)
'Declaration Public Shared Function GetFunctionPointerForDelegate ( _ d As Delegate _ ) As IntPtr
Parameters
- d
- Type: System.Delegate
The delegate to be passed to unmanaged code.
Return Value
Type: System.IntPtrA value that can be passed to unmanaged code, which, in turn, can use it to call the underlying managed delegate.
| Exception | Condition |
|---|---|
| ArgumentException | The d parameter is a generic type. |
| ArgumentNullException | The d parameter is Nothing. |
The delegate d is converted to a function pointer that can be passed to unmanaged code using the __stdcall calling convention.
You must manually keep the delegate from being collected by the garbage collector from managed code. The garbage collector does not track reference to unmanaged code.
.gif?cs-save-lang=1&cs-lang=vb "Note") Note |
|---|
Generics are not supported in interop scenarios. |
- SecurityCriticalAttribute
requires full trust for the immediate caller. This member cannot be used by partially trusted or transparent code.
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.
