GetRequestedRuntimeInfo Function
Gets version and directory information about the common language runtime (CLR) requested by an application.
HRESULT GetRequestedRuntimeInfo (
[in] LPCWSTR pExe,
[in] LPCWSTR pwszVersion,
[in] LPCWSTR pConfigurationFile,
[in] DWORD startupFlags,
[in] DWORD runtimeInfoFlags,
[out] LPWSTR pDirectory,
[in] DWORD dwDirectory,
[out] DWORD *dwDirectoryLength,
[out] LPWSTR pVersion,
[in] DWORD cchBuffer,
[out] DWORD *dwlength
);
Parameters
- pExe
[in] The name of the application.
- pwszVersion
[in] A string specifying the version number of the runtime.
- pConfigurationFile
[in] The name of the configuration file that is associated with pExe.
- startupFlags
[in] One or more of the STARTUP_FLAGS Enumeration enumeration values.
- runtimeInfoFlags
[in] One or more of the RUNTIME_INFO_FLAGS Enumeration enumeration values.
- pDirectory
[out] A buffer that contains the directory path to the runtime upon successful completion.
- dwDirectory
[in] The length of the directory buffer.
- dwDirectoryLength
[out] A pointer to the length of the directory path string.
- pVersion
[out] A buffer that contains the version number of the runtime upon successful completion.
- cchBuffer
[in] The length of the version string buffer.
- dwlength
[out] A pointer to the length of the version 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. |
ERROR_INSUFFICIENT_BUFFER |
The directory buffer is not large enough to store the directory path. - or - The version buffer is not large enough to store the version string. |
Remarks
The GetRequestedRuntimeInfo method returns run-time information about the version loaded into the process, which is not necessarily the latest version installed on the computer.
In the .NET Framework version 2.0, you can get information about the latest installed version by using the GetRequestedRuntimeInfo method as follows:
Specify the pExe, pwszVersion, and pConfigurationFile parameters as null.
Specify the RUNTIME_INFO_UPGRADE_VERSION flag in the RUNTIME_INFO_FLAGS Enumeration enumerations for the runtimeInfoFlags parameter.
The GetRequestedRuntimeInfo method does not return the latest CLR version in the following circumstances:
An application configuration file that specifies loading a particular CLR version exists. Note that the .NET Framework will use the configuration file even if you specify null for the pConfigurationFile parameter.
The CorBindToRuntimeEx Function method was called specifying an earlier CLR version.
An application that was compiled for an earlier CLR version is currently running.
For the runtimeInfoFlags parameter, you can specify only one of the architecture constants of the RUNTIME_INFO_FLAGS Enumeration enumeration at a time:
RUNTIME_INFO_REQUEST_IA64
RUNTIME_INFO_REQUEST_AMD64
RUNTIME_INFO_REQUEST_X86
Requirements
Platforms: Windows 2000, Windows XP, Windows Server 2003 family
Header: MSCorEE.idl
Library: MSCorEE.dll
.NET Framework Version: 2.0, 1.1
See Also
Tasks
CLR Version Detection Technology Sample
Reference
GetRequestedRuntimeVersion Function
GetVersionFromProcess Function