Marshal.FreeBSTR(IntPtr) Method
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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)- ptr
-
IntPtr
nativeint
The address of the BSTR to be freed.
- Attributes
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.
| Product | Versions |
|---|---|
| .NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
| .NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| .NET Standard | 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1 |
| UWP | 10.0 |
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