/** * Sets the selection state of the receiver. * * <p>When the receiver is of type <code>CHECK</code> or <code>RADIO</code>, it is selected when * it is checked. * * @param selected the new selection state * @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> */ public void setSelection(boolean selected) { checkWidget(); if ((style & (SWT.CHECK | SWT.RADIO)) == 0) return; if ((OS.IsPPC || OS.IsSP) && parent.hwndCB != 0) return; long /*int*/ hMenu = parent.handle; if (OS.IsWinCE) { int index = parent.indexOf(this); if (index == -1) return; int uCheck = OS.MF_BYPOSITION | (selected ? OS.MF_CHECKED : OS.MF_UNCHECKED); OS.CheckMenuItem(hMenu, index, uCheck); } else { MENUITEMINFO info = new MENUITEMINFO(); info.cbSize = MENUITEMINFO.sizeof; info.fMask = OS.MIIM_STATE; boolean success = OS.GetMenuItemInfo(hMenu, id, false, info); if (!success) error(SWT.ERROR_CANNOT_SET_SELECTION); info.fState &= ~OS.MFS_CHECKED; if (selected) info.fState |= OS.MFS_CHECKED; success = OS.SetMenuItemInfo(hMenu, id, false, info); if (!success) { /* * Bug in Windows. For some reason SetMenuItemInfo(), * returns a fail code when setting the enabled or * selected state of a default item, but sets the * state anyway. The fix is to ignore the error. * * NOTE: This only happens on Vista. */ if (!OS.IsWinCE && OS.WIN32_VERSION >= OS.VERSION(6, 0)) { success = id == OS.GetMenuDefaultItem(hMenu, OS.MF_BYCOMMAND, OS.GMDI_USEDISABLED); } if (!success) { int error = OS.GetLastError(); SWT.error( SWT.ERROR_CANNOT_SET_SELECTION, null, " [GetLastError=0x" + Integer.toHexString(error) + "]"); // $NON-NLS-1$ $NON-NLS-2$ } } } parent.redraw(); }
/** * Enables the receiver if the argument is <code>true</code>, and disables it otherwise. A * disabled menu item is typically not selectable from the user interface and draws with an * inactive or "grayed" look. * * @param enabled the new enabled state * @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> */ public void setEnabled(boolean enabled) { checkWidget(); if ((OS.IsPPC || OS.IsSP) && parent.hwndCB != 0) { long /*int*/ hwndCB = parent.hwndCB; TBBUTTONINFO info = new TBBUTTONINFO(); info.cbSize = TBBUTTONINFO.sizeof; info.dwMask = OS.TBIF_STATE; OS.SendMessage(hwndCB, OS.TB_GETBUTTONINFO, id, info); info.fsState &= ~OS.TBSTATE_ENABLED; if (enabled) info.fsState |= OS.TBSTATE_ENABLED; OS.SendMessage(hwndCB, OS.TB_SETBUTTONINFO, id, info); } else { /* * Feature in Windows. For some reason, when the menu item * is a separator, GetMenuItemInfo() always indicates that * the item is not enabled. The fix is to track the enabled * state for separators. */ if ((style & SWT.SEPARATOR) != 0) { if (enabled) { state &= ~DISABLED; } else { state |= DISABLED; } } long /*int*/ hMenu = parent.handle; if (OS.IsWinCE) { int index = parent.indexOf(this); if (index == -1) return; int uEnable = OS.MF_BYPOSITION | (enabled ? OS.MF_ENABLED : OS.MF_GRAYED); OS.EnableMenuItem(hMenu, index, uEnable); } else { MENUITEMINFO info = new MENUITEMINFO(); info.cbSize = MENUITEMINFO.sizeof; info.fMask = OS.MIIM_STATE; boolean success = OS.GetMenuItemInfo(hMenu, id, false, info); if (!success) { int error = OS.GetLastError(); SWT.error( SWT.ERROR_CANNOT_SET_ENABLED, null, " [GetLastError=0x" + Integer.toHexString(error) + "]"); // $NON-NLS-1$ $NON-NLS-2$ } int bits = OS.MFS_DISABLED | OS.MFS_GRAYED; if (enabled) { if ((info.fState & bits) == 0) return; info.fState &= ~bits; } else { if ((info.fState & bits) == bits) return; info.fState |= bits; } success = OS.SetMenuItemInfo(hMenu, id, false, info); if (!success) { /* * Bug in Windows. For some reason SetMenuItemInfo(), * returns a fail code when setting the enabled or * selected state of a default item, but sets the * state anyway. The fix is to ignore the error. * * NOTE: This only happens on Vista. */ if (!OS.IsWinCE && OS.WIN32_VERSION >= OS.VERSION(6, 0)) { success = id == OS.GetMenuDefaultItem(hMenu, OS.MF_BYCOMMAND, OS.GMDI_USEDISABLED); } if (!success) { int error = OS.GetLastError(); SWT.error( SWT.ERROR_CANNOT_SET_ENABLED, null, " [GetLastError=0x" + Integer.toHexString(error) + "]"); // $NON-NLS-1$ $NON-NLS-2$ } } } } parent.destroyAccelerators(); parent.redraw(); }