Examples of com.sun.jna.platform.win32.User32

com.sun.jna.platform.win32.WinNT.HRESULT
Provides access to the w32 user32 library. Incomplete implementation to support demos. @author Todd Fast, todd.fast@sun.com @author twalljava@dev.java.net @author Tobias Wolf, wolf.tobias@gmx.net @author Markus KARG (markus[at]headcrashing[dot]eu)

    }
    
    public void testDuplicateToken() {
      HANDLEByReference phToken = new HANDLEByReference();
      HANDLEByReference phTokenDup = new HANDLEByReference();
      HANDLE processHandle = Kernel32.INSTANCE.GetCurrentProcess();
        assertTrue(Advapi32.INSTANCE.OpenProcessToken(processHandle, 
            WinNT.TOKEN_DUPLICATE | WinNT.TOKEN_QUERY, phToken));
        assertTrue(Advapi32.INSTANCE.DuplicateToken(phToken.getValue(), 
            WinNT.SECURITY_IMPERSONATION_LEVEL.SecurityImpersonation, phTokenDup));
      assertTrue(Kernel32.INSTANCE.CloseHandle(phTokenDup.getValue()));

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    }
    
    public void testDuplicateTokenEx() {
      HANDLEByReference hExistingToken = new HANDLEByReference();
      HANDLEByReference phNewToken = new HANDLEByReference();
      HANDLE processHandle = Kernel32.INSTANCE.GetCurrentProcess();
      assertTrue(Advapi32.INSTANCE.OpenProcessToken(processHandle,
          WinNT.TOKEN_DUPLICATE | WinNT.TOKEN_QUERY, hExistingToken));
      assertTrue(Advapi32.INSTANCE.DuplicateTokenEx(hExistingToken.getValue(),
          WinNT.GENERIC_READ, null, SECURITY_IMPERSONATION_LEVEL.SecurityAnonymous,
          TOKEN_TYPE.TokenPrimary, phNewToken));

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      assertTrue(Kernel32.INSTANCE.CloseHandle(hExistingToken.getValue()));
    }
    
    public void testGetTokenOwnerInformation() {
      HANDLEByReference phToken = new HANDLEByReference();
      HANDLE processHandle = Kernel32.INSTANCE.GetCurrentProcess();
        assertTrue(Advapi32.INSTANCE.OpenProcessToken(processHandle, 
            WinNT.TOKEN_DUPLICATE | WinNT.TOKEN_QUERY, phToken));
        IntByReference tokenInformationLength = new IntByReference();
        assertFalse(Advapi32.INSTANCE.GetTokenInformation(phToken.getValue(), 
            WinNT.TOKEN_INFORMATION_CLASS.TokenOwner, null, 0, tokenInformationLength));

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        assertTrue(Kernel32.INSTANCE.CloseHandle(phToken.getValue()));
    }
    
    public void testGetTokenUserInformation() {
      HANDLEByReference phToken = new HANDLEByReference();
      HANDLE processHandle = Kernel32.INSTANCE.GetCurrentProcess();
        assertTrue(Advapi32.INSTANCE.OpenProcessToken(processHandle, 
            WinNT.TOKEN_DUPLICATE | WinNT.TOKEN_QUERY, phToken));
        IntByReference tokenInformationLength = new IntByReference();
        assertFalse(Advapi32.INSTANCE.GetTokenInformation(phToken.getValue(), 
            WinNT.TOKEN_INFORMATION_CLASS.TokenUser, null, 0, tokenInformationLength));

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        assertTrue(Kernel32.INSTANCE.CloseHandle(phToken.getValue()));
    }   
    
    public void testGetTokenGroupsInformation() {
      HANDLEByReference phToken = new HANDLEByReference();
      HANDLE processHandle = Kernel32.INSTANCE.GetCurrentProcess();
        assertTrue(Advapi32.INSTANCE.OpenProcessToken(processHandle, 
            WinNT.TOKEN_DUPLICATE | WinNT.TOKEN_QUERY, phToken));
        IntByReference tokenInformationLength = new IntByReference();
        assertFalse(Advapi32.INSTANCE.GetTokenInformation(phToken.getValue(), 
            WinNT.TOKEN_INFORMATION_CLASS.TokenGroups, null, 0, tokenInformationLength));

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        enableButton = new JButton("Enable");
        enableButton.setMnemonic('e');
        enableButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                HRESULT hResult;
                hResult = LibDwmApi.INSTANCE.DwmEnableComposition(LibDwmApi.DWM_EC_ENABLECOMPOSITION);
                System.out.println("DwmEnableComposition hResult=" + hResult.intValue());
                dumpStatus();
            }
        });


        disableButton = new JButton("Disable");
        disableButton.setMnemonic('d');
        disableButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                HRESULT hResult;
                hResult = LibDwmApi.INSTANCE.DwmEnableComposition(LibDwmApi.DWM_EC_DISABLECOMPOSITION);
                System.out.println("DwmEnableComposition hResult=" + hResult.intValue());
                dumpStatus();
            }
        });


        contentPane = new JPanel();

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        frame.setVisible(true);
    }


    private void dumpStatus() {
        IntByReference pfEnabled = new IntByReference();
        HRESULT hResult = LibDwmApi.INSTANCE.DwmIsCompositionEnabled(pfEnabled);
        System.out.println("DwmIsCompositionEnabled hResult=" + hResult.intValue());
        if(hResult.intValue() == LibDwmApi.S_OK) {
            System.out.println("Desktop composition is " + (pfEnabled.getValue() != 0 ? "enabled" : "disabled"));
        }
    }

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  }


  public void testLoadRegTypeLib() {
    CLSID.ByReference clsid = new CLSID.ByReference();
    // get CLSID from string, Microsoft Scripting Engine
    HRESULT hr = Ole32.INSTANCE.CLSIDFromString(new WString(
        "{420B2830-E718-11CF-893D-00A0C9054228}"), clsid);
    COMUtils.checkRC(hr);
    assertEquals(0, hr.intValue());


    // get user default lcid
    LCID lcid = Kernel32.INSTANCE.GetUserDefaultLCID();
    PointerByReference pWordTypeLib = new PointerByReference();
    // get typelib version 1.0
    hr = OleAuto.INSTANCE.LoadRegTypeLib(clsid, 1, 0, lcid, pWordTypeLib);
    COMUtils.checkRC(hr);
    assertEquals(0, hr.intValue());
  }

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    assertEquals("{00000000-0000-0000-0000-000000000000}",
        Native.toString(lpsz));
  }


  public void testCoInitializeEx() {
    HRESULT hr = Ole32.INSTANCE.CoInitializeEx(null, 0);
    assertTrue(W32Errors.SUCCEEDED(hr.intValue())
        || hr.intValue() == W32Errors.RPC_E_CHANGED_MODE);
    if (W32Errors.SUCCEEDED(hr.intValue()))
      Ole32.INSTANCE.CoUninitialize();
  }

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    if (W32Errors.SUCCEEDED(hr.intValue()))
      Ole32.INSTANCE.CoUninitialize();
  }


  public void testCoCreateInstance() {
    HRESULT hrCI = Ole32.INSTANCE.CoInitializeEx(null, 0);


    GUID guid = Ole32Util
        .getGUIDFromString("{00021401-0000-0000-C000-000000000046}"); // Shell object
    GUID riid = Ole32Util
        .getGUIDFromString("{000214EE-0000-0000-C000-000000000046}"); // IShellLinkA


    PointerByReference pDispatch = new PointerByReference();


    HRESULT hr = Ole32.INSTANCE.CoCreateInstance(guid, null, // pOuter =
                                  // null, no
                                  // aggregation
        WTypes.CLSCTX_LOCAL_SERVER, riid, pDispatch);
    assertTrue(W32Errors.SUCCEEDED(hr.intValue()));
    assertTrue(!pDispatch.equals(Pointer.NULL));
    // We leak this iUnknown reference because we don't have the JNACOM lib
    // here to wrap the native iUnknown pointer and call iUnknown.release()
    if (W32Errors.SUCCEEDED(hrCI.intValue()))
      Ole32.INSTANCE.CoUninitialize();

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