[This function is available for use in the operating systems indicated in the Requirements section. It may be altered or unavailable in subsequent versions. SetupAPI should no longer be used for installing applications. Instead, use the Windows Installer for developing application installers. SetupAPI continues to be used for installing device drivers.] The SetupQueryInfVersionInformation function returns INF file version information from an SP_INF_INFORMATION structure to a buffer. ## -parameters ### -param InfInformation [in] Pointer to an SP_INF_INFORMATION structure previously returned from a call to the SetupGetInfInformation function. ### -param InfIndex [in] Index of the constituent INF file to retrieve version information from. This index can be in the range [0, InfInformation.InfCount). Meaning that the values zero through, but not including, InfInformation.InfCount are valid. ### -param Key [in] Optional pointer to a null-terminated string containing the key name whose associated string is to be retrieved. If this parameter is NULL, all resource keys are copied to the supplied buffer. Each string is null-terminated, with an extra null at the end of the list. ### -param ReturnBuffer [in, out] If not NULL, ReturnBuffer points to a call-supplied character buffer in which this function returns the INF file style. You should use a null-terminated string. The null-terminated string should not exceed the size of the destination buffer. You can call the function once to get the required buffer size, allocate the necessary memory, and then call the function a second time to retrieve the data. Using this technique, you can avoid errors due to an insufficient buffer size. See the Remarks section. This parameter can be NULL. ### -param ReturnBufferSize [in] Size of the buffer pointed to by the ReturnBuffer parameter, in characters. This number includes the null terminator. ### -param RequiredSize [in, out] If not NULL, pointer to a variable that receives the size required for the buffer pointed to by the ReturnBuffer parameter, in characters. This number includes the null terminator. If ReturnBuffer is specified and the actual size is larger than the value specified by ReturnBufferSize, the function fails and a call to GetLastError returns ERROR_INSUFFICIENT_BUFFER. ## -returns If the function succeeds, the return value is a nonzero value. If the function fails, the return value is zero. To get extended error information, call GetLastError. ## -remarks If this function is called with a ReturnBuffer of NULL and a ReturnBufferSize of zero, the function puts the buffer size needed to hold the specified data into the variable pointed to by RequiredSize. If the function succeeds in this, the return value is a nonzero value. Otherwise, the return value is zero and extended error information can be obtained by calling GetLastError. If SetupQueryInfVersionInformation is called on a legacy INF file , then version information is generated from the legacy INF file in the following manner:
| Legacy file information | Windows INF information |
|---|---|
| ``` syntax [Identification] OptionType = Mouse ``` | ``` syntax [Version] Class=Mouse ``` |
| ``` syntax [Signature] FileType = MICROSOFT_FILE ``` | ``` syntax Signature=MICROSOFT_FILE ``` |
| (if the FileType is MICROSOFT_FILE) | ``` syntax Provider="Microsoft" ``` |