public static extern Int32 DriverPackageGetPath([MarshalAs(UnmanagedType.LPTStr)] string DriverPackageInfPath, [MarshalAs(UnmanagedType.LPTStr)] string pDestInfPath, out Int32 pNumOfChars);

Public Declare Auto Function DriverPackageGetPath Lib "DIFxAPI.dll" (ByVal DriverPackageInfPath As String, ByVal pDestInfPath As String, ByRef pNumOfChars As Int32) As Int32

public static extern Int32 DriverPackageGetPath(

Int32 GetPathResult = DriverPackageGetPath(infFile, infDriverStorePath, out infDriverStorePathLength);

     GetPathResult = DriverPackageGetPath(infFile, infDriverStorePath, out infDriverStorePathLength);

Dim GetPathResult As Int32 = DriverPackageGetPath(infFile, infDriverStorePath, infDriverStorePathLength)

     GetPathResult = DriverPackageGetPath(infFile, infDriverStorePath, infDriverStorePathLength)