JNA for Windows API function GetVolumePathNamesForVolumeName

Question

I\'ve successfully used JNA to call a couple of Windows API functions but I get stuck at this one

GetVolumePathNamesForVolumeName

The full C declaration is:<

Answer 1

Thanks eee for your answer. It led me to the following. You answer was almost complete. Just needed a last bit to split the resultant char[] into the path components which is separated by null characters.

// Decleration...

public interface Kernel32 extends StdCallLibrary   {

   public boolean GetVolumePathNamesForVolumeName(
        WString lpszVolumeName,
        char[] lpszVolumePathNames,
        int cchBufferLength,
        IntByReference lpcchReturnLength
   );

   // Other methods....
}

...

// Instantiation
Native.loadLibrary('kernel32', Kernel32.class, W32APIOptions.UNICODE_OPTIONS)

...

// Usage

public List getMountPoints() {
    char[] pathNames = new char[100];
    IntByReference len = new IntByReference();
    if (!kernel32.GetVolumePathNamesForVolumeName(new WString(this.getGuidPath()), pathNames, 100, len)) {
        if (kernel32.GetLastError() == WindowsConstants.ERROR_MORE_DATA) {
            pathNames = new char[len.getValue()];
            if (!kernel32.GetVolumePathNamesForVolumeName(new WString(this.getGuidPath()), pathNames, len.getValue(), len)) {
                throw new WinApiException(kernel32.GetLastError());
            }
        } 
        else
            throw new WinApiException(kernel32.GetLastError());
    }
    List list = new LinkedList();
    int offset = 0;
    for (int i = 0; i < pathNames.length; i++) {
        if (pathNames[i] == '\u0000') {
            list.add(String.valueOf(pathNames, offset, i-offset));
            offset = i+1;
            if (pathNames[i+1] == '\u0000')
                break;
        }
    }
    return list;
}