/** * Sets the image the receiver will display to the argument. * * <p>Note: This operation is a hint and is not supported on platforms that do not have this * concept (for example, Windows NT). Furthermore, some platforms (such as GTK), cannot display * both a check box and an image at the same time. Instead, they hide the image and display the * check box. * * @param image the image to display * @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 setImage(Image image) { checkWidget(); if ((style & SWT.SEPARATOR) != 0) return; super.setImage(image); if (OS.IsWinCE) { 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_IMAGE; info.iImage = parent.imageIndex(image); OS.SendMessage(hwndCB, OS.TB_SETBUTTONINFO, id, info); } return; } if (OS.WIN32_VERSION < OS.VERSION(4, 10)) return; MENUITEMINFO info = new MENUITEMINFO(); info.cbSize = MENUITEMINFO.sizeof; info.fMask = OS.MIIM_BITMAP; if (parent.foreground != -1) { info.hbmpItem = OS.HBMMENU_CALLBACK; } else { if (!OS.IsWinCE && OS.WIN32_VERSION >= OS.VERSION(6, 0) && OS.IsAppThemed()) { if (hBitmap != 0) OS.DeleteObject(hBitmap); info.hbmpItem = hBitmap = image != null ? Display.create32bitDIB(image) : 0; } else { info.hbmpItem = image != null ? OS.HBMMENU_CALLBACK : 0; } } long /*int*/ hMenu = parent.handle; OS.SetMenuItemInfo(hMenu, id, false, info); parent.redraw(); }
/** * 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(); }
/** * Sets the receiver's text. The string may include the mnemonic character and accelerator text. * * <p>Mnemonics are indicated by an '&' 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 '&' can be escaped by doubling it in the string, * causing a single '&' 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(); }