Package com.sun.jna.platform.win32.WinUser

Examples of com.sun.jna.platform.win32.WinUser.MSG

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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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   * @return
   *  A GUID.
   */
  public static GUID getGUIDFromString(String guidString) {
    GUID lpiid = new GUID();
      HRESULT hr = Ole32.INSTANCE.IIDFromString(guidString, lpiid);
      if (! hr.equals(W32Errors.S_OK)) {
        throw new RuntimeException(hr.toString());
      }
      return lpiid;
  }
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   * @return
   *  New GUID.
   */
  public static GUID generateGUID() {
    GUID pguid = new GUID();
      HRESULT hr = Ole32.INSTANCE.CoCreateGuid(pguid);
      if (! hr.equals(W32Errors.S_OK)) {
        throw new RuntimeException(hr.toString());
      }
      return pguid;
  }
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    getLastError();
    if (hDevNotify != null)
      System.out.println("RegisterDeviceNotification was sucessfully!");

    MSG msg = new MSG();
    while (User32.INSTANCE.GetMessage(msg, hWnd, 0, 0) != 0) {
      User32.INSTANCE.TranslateMessage(msg);
      User32.INSTANCE.DispatchMessage(msg);
    }
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            }
        }.start();

        // This bit never returns from GetMessage
        int result;
        MSG msg = new MSG();
        while ((result = lib.GetMessage(msg, null, 0, 0)) != 0) {
            if (result == -1) {
                System.err.println("error in get message");
                break;
            }
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    }

    public static void dispatchMessages() {
        // This bit never returns from GetMessage
        int result = -1;
        final MSG msg = new MSG();

        while ( result != 0 ) {
            result = User32.INSTANCE.GetMessage( msg, null, 0, 0 );
            if ( result == -1 ) {
                System.err.println( "error in get message" );
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        if ( err != EdsError.EDS_ERR_OK ) {
            System.err.println( "EDSDK failed to initialize, most likely you won't be able to speak to your camera (ERROR: " +
                                err.description() + " )" );
        }

        final MSG msg = new MSG();

        CanonCommand<?> cmd = null;

        while ( !Thread.currentThread().isInterrupted() ) {
            // do we have a new message?
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                null, 1, null, 0, pcbNeeded, pcReturned);
        if (pcbNeeded.getValue() <= 0) {
            return new PRINTER_INFO_1[0];
        }

        PRINTER_INFO_1 pPrinterEnum = new PRINTER_INFO_1(pcbNeeded.getValue());
        if (!Winspool.INSTANCE.EnumPrinters(Winspool.PRINTER_ENUM_LOCAL,
                null, 1, pPrinterEnum.getPointer(), pcbNeeded.getValue(), pcbNeeded, pcReturned)) {
            throw new Win32Exception(Kernel32.INSTANCE.GetLastError());
        }

        pPrinterEnum.read();

        return (PRINTER_INFO_1[]) pPrinterEnum.toArray(pcReturned.getValue());
    }
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                null, 4, null, 0, pcbNeeded, pcReturned);
        if (pcbNeeded.getValue() <= 0) {
            return new PRINTER_INFO_4[0];
        }

        PRINTER_INFO_4 pPrinterEnum = new PRINTER_INFO_4(pcbNeeded.getValue());
        if (!Winspool.INSTANCE.EnumPrinters(Winspool.PRINTER_ENUM_LOCAL,
                null, 4, pPrinterEnum.getPointer(), pcbNeeded.getValue(), pcbNeeded, pcReturned)) {
            throw new Win32Exception(Kernel32.INSTANCE.GetLastError());
        }

        pPrinterEnum.read();

        return (PRINTER_INFO_4[]) pPrinterEnum.toArray(pcReturned.getValue());
    }
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