.NET Framework General Reference
GetVersionFromProcess Function

Gets the version number of the common language runtime (CLR) that is associated with the specified process handle.

HRESULT GetVersionFromProcess (
    [in]  HANDLE  hProcess, 
    [out] LPWSTR  pVersion, 
    [in]  DWORD   cchBuffer, 
    [out] DWORD  *dwLength
);
Parameters

hProcess

[in] A handle to a process.

pVersion

[out] A buffer that contains the version number string upon successful completion of the method.

cchBuffer

[in] The length of the version buffer.

pdwLength

[out] A pointer to the length of the version number string.

Return Value

This method returns standard Component Object Model (COM) error codes, as defined in WinError.h, in addition to the following values.

Return code

Description

S_OK

The method completed successfully.

E_INVALIDARG

pVersion is null and cchBuffer is not null, or vice versa.

-or-

hProcess is not a valid handle to a process.

-or-

The CLR is not loaded.

ERROR_INSUFFICIENT_BUFFER

cchBuffer is null or less than the length of the version string.

E_NOTIMPL

This method is not available on the Microsoft Windows 95, Microsoft Windows 98, or Microsoft Windows Millennium Edition operating system.

Requirements

Platforms: See .NET Framework System Requirements.

Header: MSCorEE.idl

Library: MSCorEE.dll

.NET Framework Versions: 3.5 SP1, 3.5, 3.0 SP1, 3.0, 2.0 SP1, 2.0

See Also

Reference

Other Resources

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The process handle must be opened with PROCESS_VM_READ and either of PROCESS_QUERY_INFORMATION or PROCESS_QUERY_LIMITED_INFORMATION or the function will most likely return E_ACCESSDENIED.

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