Pointer（long）在com.sun.jna.Pointer中不是公共的； 無法從外部包訪問

Question

我正在創建一個程序，使我獲得焦點的窗口標題和特定窗口標題的處理ID。 一切正常。 但是在行

Pointer zero=new Pointer(0);

有一條警告顯示“ Pointer（long）在com.sun.jna.Pointer中不是公共的；無法從外部程序包訪問”。 。 我沒有任何解決方案來解決它。 請幫幫我。

public class Main extends SecurityManager
{
  public static int brojac = 0;
  public interface User32 extends StdCallLibrary
  {
    User32 instance = (User32) Native.loadLibrary("user32", User32.class);
    HWND GetForegroundWindow();  // add this
    int  GetWindowTextA (HWND hWnd, byte[] lpString, int nMaxCount);
    boolean EnumWindows(WinUser.WNDENUMPROC lpEnumFunc, Pointer arg);
    int GetWindowThreadProcessId(HWND hwnd, IntByReference pid);
  }
  public interface Kernel32 extends StdCallLibrary 
  {
    Kernel32 INSTANCE = (Kernel32)Native.loadLibrary("kernel32", Kernel32.class);
    public Pointer OpenProcess(int dwDesiredAccess, boolean bInheritHandle, int dwProcessId);
    public int GetTickCount();
  };

  public interface psapi extends StdCallLibrary
  {
    psapi INSTANCE = (psapi)Native.loadLibrary("psapi", psapi.class);
    int GetModuleFileNameExA (Pointer process, Pointer hModule, byte[] lpString, int nMaxCount);

  };

  public static String getModuleFilename(HWND hwnd)
  {

    byte[] exePathname = new byte[512];
    Pointer zero = new Pointer(0);
    IntByReference pid = new IntByReference();
    User32.instance.GetWindowThreadProcessId(hwnd, pid);
    System.out.println("PID is " + pid.getValue());
    Pointer process = Kernel32.INSTANCE.OpenProcess(1040, false, pid.getValue());
    int result = psapi.INSTANCE.GetModuleFileNameExA(process, zero, exePathname, 512);
    System.out.println("===========module is " + result);
    String text = Native.toString(exePathname).substring(0, result);
    return text;
 }
 public static void main(String[] args) throws InterruptedException
 {
   final User32 user32 = User32.instance; 
   user32.EnumWindows(new WNDENUMPROC() {
   int count = 0;
   @Override
   public boolean callback(HWND hWnd, Pointer arg1) 
   {

     byte[] windowText = new byte[512];
     HWND hwnd = User32.instance.GetForegroundWindow(); // then you can call it!
     User32.instance.GetWindowTextA(hwnd, windowText, 1024);
     String wtext=(Native.toString(windowText));
     System.out.println("Found window with text===" + hWnd + ", total=== " + ++count
                  + " Text:== " + wtext);
     wtext =  getModuleFilename(hWnd);
     System.out.println("##############                 " + wtext);
     return true;
   } }, null);

}
}

Answer 1

我無法重現您的警告； 使用JNA 4.1.0版，代碼可以正常工作。 盡管（隱式地）在倒數第二條以“找到帶有文本的窗口”開頭的消息中調用hWnd.toString()並不是很有意義。