lpValueName

lpValueName is a parameter used in the Windows API function RegQueryValueEx. This function is part of the Windows Registry API, which allows applications to read and write data to the Windows Registry. The lpValueName parameter is a pointer to a null-terminated string that specifies the name of the registry value to be queried. If this parameter is NULL, the function retrieves the default value of the specified registry key. The maximum length of the value name is 16,383 characters. The lpValueName parameter is crucial for applications that need to access specific data stored in the Windows Registry. It is important to note that the function will fail if the specified value does not exist in the registry key. Additionally, the caller must have the appropriate access rights to the registry key to successfully retrieve the value.