예제 #1
0
  void setMenu(Menu menu, boolean dispose) {

    /* Assign the new menu */
    Menu oldMenu = this.menu;
    if (oldMenu == menu) return;
    if (oldMenu != null) oldMenu.cascade = null;
    this.menu = menu;

    /* Assign the new menu in the OS */
    if ((OS.IsPPC || OS.IsSP) && parent.hwndCB != 0) {
      if (OS.IsPPC) {
        long /*int*/ hwndCB = parent.hwndCB;
        long /*int*/ hMenu = menu == null ? 0 : menu.handle;
        OS.SendMessage(hwndCB, OS.SHCMBM_SETSUBMENU, id, hMenu);
      }
      if (OS.IsSP) error(SWT.ERROR_CANNOT_SET_MENU);
    } else {
      long /*int*/ hMenu = parent.handle;
      MENUITEMINFO info = new MENUITEMINFO();
      info.cbSize = MENUITEMINFO.sizeof;
      info.fMask = OS.MIIM_DATA;
      int index = 0;
      while (OS.GetMenuItemInfo(hMenu, index, true, info)) {
        if (info.dwItemData == id) break;
        index++;
      }
      if (info.dwItemData != id) return;
      int cch = 128;
      long /*int*/ hHeap = OS.GetProcessHeap();
      int byteCount = cch * TCHAR.sizeof;
      long /*int*/ pszText = OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, byteCount);
      info.fMask = OS.MIIM_STATE | OS.MIIM_ID | OS.MIIM_DATA;
      /*
       * Bug in Windows.  When GetMenuItemInfo() is used to get the text,
       * for an item that has a bitmap set using MIIM_BITMAP, the text is
       * not returned.  This means that when SetMenuItemInfo() is used to
       * set the submenu and the current menu state, the text is lost.
       * The fix is use MIIM_BITMAP and MIIM_STRING.
       */
      if (!OS.IsWinCE && OS.WIN32_VERSION >= OS.VERSION(4, 10)) {
        info.fMask |= OS.MIIM_BITMAP | OS.MIIM_STRING;
      } else {
        info.fMask |= OS.MIIM_TYPE;
      }
      info.dwTypeData = pszText;
      info.cch = cch;
      boolean success = OS.GetMenuItemInfo(hMenu, index, true, info);
      if (menu != null) {
        menu.cascade = this;
        info.fMask |= OS.MIIM_SUBMENU;
        info.hSubMenu = menu.handle;
      }
      if (OS.IsWinCE) {
        OS.RemoveMenu(hMenu, index, OS.MF_BYPOSITION);
        /*
         * On WinCE, InsertMenuItem() is not available.  The fix is to
         * use SetMenuItemInfo() but this call does not set the menu item
         * state and submenu.  The fix is to use InsertMenu() to insert
         * the item, SetMenuItemInfo() to set the string and EnableMenuItem()
         * and CheckMenuItem() to set the state.
         */
        long /*int*/ uIDNewItem = id;
        int uFlags = OS.MF_BYPOSITION;
        if (menu != null) {
          uFlags |= OS.MF_POPUP;
          uIDNewItem = menu.handle;
        }
        TCHAR lpNewItem = new TCHAR(0, " ", true);
        success = OS.InsertMenu(hMenu, index, uFlags, uIDNewItem, lpNewItem);
        if (success) {
          info.fMask = OS.MIIM_DATA | OS.MIIM_TYPE;
          success = OS.SetMenuItemInfo(hMenu, index, true, info);
          if ((info.fState & (OS.MFS_DISABLED | OS.MFS_GRAYED)) != 0) {
            OS.EnableMenuItem(hMenu, index, OS.MF_BYPOSITION | OS.MF_GRAYED);
          }
          if ((info.fState & OS.MFS_CHECKED) != 0) {
            OS.CheckMenuItem(hMenu, index, OS.MF_BYPOSITION | OS.MF_CHECKED);
          }
        }
      } else {
        if (dispose || oldMenu == null) {
          success = OS.SetMenuItemInfo(hMenu, index, true, info);
        } else {
          /*
           * Feature in Windows.  When SetMenuItemInfo () is used to
           * set a submenu and the menu item already has a submenu,
           * Windows destroys the previous menu.  This is undocumented
           * and unexpected but not necessarily wrong.  The fix is to
           * remove the item with RemoveMenu () which does not destroy
           * the submenu and then insert the item with InsertMenuItem ().
           */
          OS.RemoveMenu(hMenu, index, OS.MF_BYPOSITION);
          success = OS.InsertMenuItem(hMenu, index, true, info);
        }
      }
      if (pszText != 0) OS.HeapFree(hHeap, 0, pszText);
      if (!success) {
        int error = OS.GetLastError();
        SWT.error(
            SWT.ERROR_CANNOT_SET_MENU,
            null,
            " [GetLastError=0x" + Integer.toHexString(error) + "]"); // $NON-NLS-1$ $NON-NLS-2$
      }
    }
    parent.destroyAccelerators();
  }
예제 #2
0
  /**
   * Sets the receiver's text. The string may include the mnemonic character and accelerator text.
   *
   * <p>Mnemonics are indicated by an '&amp;' that causes the next character to be the mnemonic.
   * When the user presses a key sequence that matches the mnemonic, a selection event occurs. On
   * most platforms, the mnemonic appears underlined but may be emphasised in a platform specific
   * manner. The mnemonic indicator character '&amp;' can be escaped by doubling it in the string,
   * causing a single '&amp;' to be displayed.
   *
   * <p>Accelerator text is indicated by the '\t' character. On platforms that support accelerator
   * text, the text that follows the '\t' character is displayed to the user, typically indicating
   * the key stroke that will cause the item to become selected. On most platforms, the accelerator
   * text appears right aligned in the menu. Setting the accelerator text does not install the
   * accelerator key sequence. The accelerator key sequence is installed using #setAccelerator.
   *
   * @param string the new text
   * @exception IllegalArgumentException
   *     <ul>
   *       <li>ERROR_NULL_ARGUMENT - if the text is null
   *     </ul>
   *
   * @exception SWTException
   *     <ul>
   *       <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
   *       <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
   *     </ul>
   *
   * @see #setAccelerator
   */
  public void setText(String string) {
    checkWidget();
    if (string == null) error(SWT.ERROR_NULL_ARGUMENT);
    if ((style & SWT.SEPARATOR) != 0) return;
    if (text.equals(string)) return;
    super.setText(string);
    long /*int*/ hHeap = OS.GetProcessHeap();
    long /*int*/ pszText = 0;
    boolean success = false;
    if ((OS.IsPPC || OS.IsSP) && parent.hwndCB != 0) {
      /*
       * Bug in WinCE PPC.  Tool items on the menubar don't resize
       * correctly when the character '&' is used (even when it
       * is a sequence '&&').  The fix is to remove all '&' from
       * the string.
       */
      if (string.indexOf('&') != -1) {
        int length = string.length();
        char[] text = new char[length];
        string.getChars(0, length, text, 0);
        int i = 0, j = 0;
        for (i = 0; i < length; i++) {
          if (text[i] != '&') text[j++] = text[i];
        }
        if (j < i) string = new String(text, 0, j);
      }
      /* Use the character encoding for the default locale */
      TCHAR buffer = new TCHAR(0, string, true);
      int byteCount = buffer.length() * TCHAR.sizeof;
      pszText = OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, byteCount);
      OS.MoveMemory(pszText, buffer, byteCount);
      long /*int*/ hwndCB = parent.hwndCB;
      TBBUTTONINFO info2 = new TBBUTTONINFO();
      info2.cbSize = TBBUTTONINFO.sizeof;
      info2.dwMask = OS.TBIF_TEXT;
      info2.pszText = pszText;
      success = OS.SendMessage(hwndCB, OS.TB_SETBUTTONINFO, id, info2) != 0;
    } else {
      MENUITEMINFO info = new MENUITEMINFO();
      info.cbSize = MENUITEMINFO.sizeof;
      long /*int*/ hMenu = parent.handle;

      /* Use the character encoding for the default locale */
      TCHAR buffer = new TCHAR(0, string, true);
      int byteCount = buffer.length() * TCHAR.sizeof;
      pszText = OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, byteCount);
      OS.MoveMemory(pszText, buffer, byteCount);
      /*
       * Bug in Windows 2000.  For some reason, when MIIM_TYPE is set
       * on a menu item that also has MIIM_BITMAP, the MIIM_TYPE clears
       * the MIIM_BITMAP style.  The fix is to use MIIM_STRING.
       */
      if (!OS.IsWinCE && OS.WIN32_VERSION >= OS.VERSION(4, 10)) {
        info.fMask = OS.MIIM_STRING;
      } else {
        info.fMask = OS.MIIM_TYPE;
        info.fType = widgetStyle();
      }
      info.dwTypeData = pszText;
      success = OS.SetMenuItemInfo(hMenu, id, false, info);
    }
    if (pszText != 0) OS.HeapFree(hHeap, 0, pszText);
    if (!success) {
      int error = OS.GetLastError();
      SWT.error(
          SWT.ERROR_CANNOT_SET_TEXT,
          null,
          " [GetLastError=0x" + Integer.toHexString(error) + "]"); // $NON-NLS-1$ $NON-NLS-2$
    }
    parent.redraw();
  }