Mapping Windows API to Java - JNA

Question

I am trying to use JNA to implement the functions in the Win32 USB API (http://www2.hawaii.edu/~hermany/api.htm)
I am trying to figure out how to map the following "HDEVINFO" which is defined as "typedef PVOID", which in turn is defined as typedef void* PVOID; (http://msdn2.microsoft.com/en-us/library/bb401729.aspx)
===================================================================================
     * From the API provided by Microsoft (http://msdn2.microsoft.com/en-us/library/ms792959.aspx)
     * HDEVINFO
     * SetupDiGetClassDevs(
     * IN LPGUID ClassGuid, OPTIONAL
     * IN PCTSTR Enumerator, OPTIONAL
     * IN HWND hwndParent, OPTIONAL
     * IN DWORD Flags
http://www.alanmacek.com/usb/DDKFiles/setupapi.h
typedef PVOID HDEVINFO;
====================================================================================
HDEVINFO is supposed to be an array of structures for the device information set. How do I map HDEVINFO on to the Java class that mirrors the SetupDiGetClassDevs function in the API?

Answer 1

Well I am using JNA (jna.jar) to make the call to the function available in the setupapi.dll. In the following code: Setupapi INSTANCE = (Setupapi) Native.loadLibrary("setupapi", Setupapi.class);*, this is what is being done. I am new to using JNA. Also, It would be great to have a resource that lists all the available functions for a Windows DLL. MSDN, of course is a good resource but it does not provide search results for a dll. One has to know the function to be called.
public interface Setupapi extends StdCallLibrary {
      * Allocating an instance of the native library using the Native.loadLibrary(Class) method,
      * providing the native library interface
      * This instance is for convenient reuse. Alternatively, we can load the library into a
      * local variable so that it will be available for garbage collection when it goes out of scope
     Setupapi INSTANCE = (Setupapi) Native.loadLibrary("setupapi", Setupapi.class);
      * Declaring native structures to pass to  native functions.
      * To do this, create a class that extends Structure (https://jna.dev.java.net/javadoc/com/sun/jna/Structure.html)
      * and add public fields
      * (which may include arrays or nested structures).
      * Declaring methods that mirror the functions in the target library by defining Java methods with
      * the same name and argument types as the native function
      * (refer to the basic mappings (https://jna.dev.java.net/#mapping) or the
      * detailed table of type mappings (https://jna.dev.java.net/javadoc/overview-summary.html#marshalling) ).
      * From the API provided by Microsoft (http://msdn2.microsoft.com/en-us/library/ms792959.aspx)
      * HDEVINFO
      * SetupDiGetClassDevs(
      * IN LPGUID  ClassGuid,  OPTIONAL
      * IN PCTSTR  Enumerator,  OPTIONAL
      * IN HWND  hwndParent,  OPTIONAL
      * IN DWORD  Flags
      // TODO: public HDEVINFO SetupDiGetClassDevs(
}