Marshal.FreeBSTR(IntPtr) Method
Definition
Important
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Frees a BSTR using the COM SysFreeString function.
public:
static void FreeBSTR(IntPtr ptr);[System.Security.SecurityCritical]
public static void FreeBSTR (IntPtr ptr);public static void FreeBSTR (IntPtr ptr);[<System.Security.SecurityCritical>]
static member FreeBSTR : nativeint -> unitstatic member FreeBSTR : nativeint -> unitPublic Shared Sub FreeBSTR (ptr As IntPtr)Parameters
- ptr
-
IntPtr
nativeint
The address of the BSTR to be freed.
- Attributes
Remarks
Like Marshal.FreeCoTaskMem and Marshal.FreeHGlobal, you can use this method to deallocate memory. FreeBSTR calls the COM SysFreeString function, which frees memory allocated by any of the following unmanaged methods: SysAllocString, SysAllocStringByteLen, SysAllocStringLen, SysReAllocString, SysReAllocStringLen. You can call unmanaged methods such as these with platform invoke. For details, see Consuming Unmanaged DLL Functions.
