bundles/org.eclipse.swt/Eclipse SWT/photon/org/eclipse/swt/widgets/Combo.java - platform/eclipse.platform.swt - Git at Google

 package org.eclipse.swt.widgets;

 /*
  * (c) Copyright IBM Corp. 2000, 2001.
  * All Rights Reserved
  */

 import org.eclipse.swt.internal.*;
 import org.eclipse.swt.internal.photon.*;
 import org.eclipse.swt.*;
 import org.eclipse.swt.graphics.*;
 import org.eclipse.swt.events.*;

 public class Combo extends Composite {

 public Combo (Composite parent, int style) {
 	super (parent, checkStyle (style));
 }

 static int checkStyle (int style) {
 	/*
 	* Feature in Windows.  It is not possible to create
 	* a combo box that has a border using Windows style
 	* bits.  All combo boxes draw their own border and
 	* do not use the standard Windows border styles.
 	* Therefore, no matter what style bits are specified,
 	* clear the BORDER bits so that the SWT style will
 	* match the Windows widget.
 	*
 	* The Windows behavior is currently implemented on
 	* all platforms.
 	*/
 	style &= ~SWT.BORDER;

 	/*
 	* Even though it is legal to create this widget
 	* with scroll bars, they serve no useful purpose
 	* because they do not automatically scroll the
 	* widget's client area.  The fix is to clear
 	* the SWT style.
 	*/
 	style &= ~(SWT.H_SCROLL | SWT.V_SCROLL);
 	style = checkBits (style, SWT.DROP_DOWN, SWT.SIMPLE, 0, 0, 0, 0);
 	if ((style & SWT.SIMPLE) != 0) return style & ~SWT.READ_ONLY;
 	return style;
 }

 public Point computeSize (int wHint, int hHint, boolean changed) {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	//NOT DONE: this only works with a DROP_DOWN combo
 	if ((style & SWT.SIMPLE) != 0) return new Point(100, 100);
 	PhDim_t dim = new PhDim_t();
 	if (!OS.PtWidgetIsRealized (handle)) OS.PtExtentWidgetFamily (handle);
 	OS.PtWidgetPreferredSize(handle, dim);
 	int width = dim.w;
 	int height = dim.h;
 	int text = OS.PtWidgetChildBack(handle);
 	OS.PtWidgetPreferredSize(text, dim);
 	height += dim.h;
 	PhRect_t rect = new PhRect_t ();
 	PhArea_t area = new PhArea_t ();
 	OS.PtSetAreaFromWidgetCanvas (text, rect, area);
 	width += area.size_w;
 	int [] args = new int [] {
 		OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0,
 		OS.Pt_ARG_ITEMS, 0, 0,
 		OS.Pt_ARG_TEXT_FONT, 0, 0,
 	};
 	OS.PtGetResources (handle, args.length / 3, args);
 	int maxWidth = 0;
 	rect = new PhRect_t();
 	int [] items = new int [1];
 	for (int i = 0; i < args [1]; i++) {
 		OS.memmove (items, args [4] + (i * 4), 4);
 		int length = OS.strlen (items [0]);
 		OS.PfExtentText(rect, null, args [7], items [0], length);
 		maxWidth = Math.max(maxWidth, rect.lr_x - rect.ul_x + 1);
 	}
 	width += maxWidth;
 	if (wHint != SWT.DEFAULT || hHint != SWT.DEFAULT) {
 		rect = new PhRect_t ();
 		area = new PhArea_t ();
 		rect.lr_x = (short) (wHint - 1);
 		rect.lr_y = (short) (hHint - 1);
 		OS.PtSetAreaFromWidgetCanvas (handle, rect, area);
 		if (wHint != SWT.DEFAULT) width = area.size_w;
 		if (hHint != SWT.DEFAULT) height = area.size_h;
 	}
 	return new Point(width, height);
 }

 void createHandle (int index) {
 	state |= HANDLE;
 	Display display = getDisplay ();
 	int clazz = display.PtComboBox;
 	int parentHandle = parent.handle;
 	int textFlags = (style & SWT.READ_ONLY) != 0 ? 0 : OS.Pt_EDITABLE;
 	int [] args = {
 		OS.Pt_ARG_TEXT_FLAGS, textFlags, OS.Pt_EDITABLE,
 		OS.Pt_ARG_CBOX_MAX_VISIBLE_COUNT, 5, 0,
 		OS.Pt_ARG_CBOX_FLAGS, (style & SWT.SIMPLE) != 0 ? OS.Pt_COMBOBOX_STATIC: 0, OS.Pt_COMBOBOX_STATIC,
 		OS.Pt_ARG_RESIZE_FLAGS, 0, OS.Pt_RESIZE_XY_BITS,
 	};
 	handle = OS.PtCreateWidget (clazz, parentHandle, args.length / 3, args);
 	if (handle == 0) error (SWT.ERROR_NO_HANDLES);
 }

 public void deselect (int index) {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	int [] args = new int [] {OS.Pt_ARG_CBOX_SELECTION_ITEM, 0, 0};
 	OS.PtGetResources (handle, args.length / 3, args);
 	if (args [1] == index) {
 		args = new int [] {
 			OS.Pt_ARG_TEXT_STRING, 0, 0,
 			OS.Pt_ARG_CBOX_SELECTION_ITEM, 0, 0
 		};
 		OS.PtSetResources (handle, args.length / 3, args);
 	}
 }

 public void deselectAll () {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	int [] args = new int [] {
 		OS.Pt_ARG_TEXT_STRING, 0, 0,
 		OS.Pt_ARG_CBOX_SELECTION_ITEM, 0, 0
 	};
 	OS.PtSetResources (handle, args.length / 3, args);
 }

 public void add (String string) {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
 	byte [] buffer = Converter.wcsToMbcs (null, string, true);
 	int ptr = OS.malloc (buffer.length);
 	OS.memmove (ptr, buffer, buffer.length);
 	OS.PtListAddItems (handle, new int [] {ptr}, 1, 0);
 	OS.free (ptr);
 }

 public void add (String string, int index) {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
 	if (index == -1) error (SWT.ERROR_INVALID_RANGE);
 	byte [] buffer = Converter.wcsToMbcs (null, string, true);
 	int ptr = OS.malloc (buffer.length);
 	OS.memmove (ptr, buffer, buffer.length);
 	int result = OS.PtListAddItems (handle, new int [] {ptr}, 1, index + 1);
 	OS.free (ptr);
 	if (result != 0) {
 		int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0};
 		OS.PtGetResources (handle, args.length / 3, args);
 		if (0 <= index && index <= args [1]) error (SWT.ERROR_ITEM_NOT_ADDED);
 		error (SWT.ERROR_INVALID_RANGE);
 	}
 }

 public void addModifyListener (ModifyListener listener) {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
 	TypedListener typedListener = new TypedListener (listener);
 	addListener (SWT.Modify, typedListener);
 }

 public void addSelectionListener(SelectionListener listener) {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
 	TypedListener typedListener = new TypedListener (listener);
 	addListener (SWT.Selection,typedListener);
 	addListener (SWT.DefaultSelection,typedListener);
 }

 protected void checkSubclass () {
 	if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS);
 }

 public void clearSelection () {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	OS.PtTextSetSelection (handle, new int [] {0}, new int [] {0});
 }

 void deregister () {
 	super.deregister ();
 	int child = OS.PtWidgetChildBack (handle);
 	WidgetTable.remove (child);
 }

 int focusHandle () {

 	/*
 	* Fetuare in Photon. The combo box does not receive
 	* Pt_CB_GOT_FOCUS and Pt_CB_LOST_FOCUS callbacks itself.
 	* Only the internal PtText receives them. The fix is to
 	* add these callbacks in the internal PtText.
 	*/
 	return OS.PtWidgetChildBack (handle);
 }

 public String getItem (int index) {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	int [] args = new int [] {
 		OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0,
 		OS.Pt_ARG_ITEMS, 0, 0,
 	};
 	OS.PtGetResources (handle, args.length / 3, args);
 	if (!(0 <= index && index < args [1])) {
 		error (SWT.ERROR_INVALID_RANGE);
 	}
 	int [] items = new int [1];
 	OS.memmove (items, args [4] + (index * 4), 4);
 	int length = OS.strlen (items [0]);
 	byte [] buffer = new byte [length];
 	OS.memmove (buffer, items [0], length);
 	char [] unicode = Converter.mbcsToWcs (null, buffer);
 	return new String (unicode);
 }

 public int getItemCount () {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0};
 	OS.PtGetResources (handle, args.length / 3, args);
 	return args [1];
 }

 public int getItemHeight () {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	//NOT DONE - NOT NEEDED
 	return 0;
 }

 public String [] getItems () {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	int [] args = new int [] {
 		OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0,
 		OS.Pt_ARG_ITEMS, 0, 0,
 	};
 	OS.PtGetResources (handle, args.length / 3, args);
 	int [] items = new int [args [1]];
 	OS.memmove (items, args [4], args [1] * 4);
 	String [] result = new String [args [1]];
 	for (int i=0; i<args [1]; i++) {
 		int length = OS.strlen (items [i]);
 		byte [] buffer = new byte [length];
 		OS.memmove (buffer, items [i], length);
 		char [] unicode = Converter.mbcsToWcs (null, buffer);
 		result [i] = new String (unicode);
 	}
 	return result;

 }

 public Point getSelection () {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	if (((style & SWT.DROP_DOWN) != 0) && ((style & SWT.READ_ONLY) != 0)) {
 		int [] args = {OS.Pt_ARG_TEXT_STRING, 0, 0};
 		OS.PtGetResources (handle, args.length / 3, args);
 		int length = 0;
 		if (args [1] != 0) length = OS.strlen (args [1]);
 		return new Point (0, length);
 	}
 //	if (textVerify != null) {
 //		return new Point (textVerify.start_pos, textVerify.end_pos);
 //	}
 	int [] start = new int [1], end = new int [1];
 	OS.PtTextGetSelection (handle, start, end);
 	if (start [0] == -1) {
 		int [] args = {OS.Pt_ARG_CURSOR_POSITION, 0, 0};
 		OS.PtGetResources (handle, args.length / 3, args);
 		start [0] = end [0] = args [1];
 	}
 	return new Point (start [0], end [0]);
 }

 public int getSelectionIndex () {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	int [] args = new int [] {OS.Pt_ARG_CBOX_SELECTION_ITEM, 0, 0};
 	OS.PtGetResources (handle, args.length / 3, args);
 	if (args [1] == 0) return -1;
 	return args [1] - 1;
 }

 public String getText () {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	int [] args = {OS.Pt_ARG_TEXT_STRING, 0, 0};
 	OS.PtGetResources (handle, args.length / 3, args);
 	if (args [1] == 0) return "";
 	int length = OS.strlen (args [1]);
 	byte [] buffer = new byte [length];
 	OS.memmove (buffer, args [1], length);
 	char [] unicode = Converter.mbcsToWcs (null, buffer);
 	return new String (unicode);
 }

 public int getTextHeight () {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	//NOT DONE - Only works for DROP_DOWN
 	PhDim_t dim = new PhDim_t();
 	if (!OS.PtWidgetIsRealized (handle)) OS.PtExtentWidgetFamily (handle);
 	OS.PtWidgetPreferredSize(handle, dim);
 	int height = dim.h;
 	int text = OS.PtWidgetChildBack(handle);
 	OS.PtWidgetPreferredSize(text, dim);
 	height += dim.h;
 	return height;
 }

 public int getTextLimit () {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	int [] args = new int [] {OS.Pt_ARG_MAX_LENGTH, 0, 0};
 	OS.PtGetResources (handle, args.length / 3, args);
 	return args [1];
 }

 boolean hasFocus () {
 	return OS.PtIsFocused (handle) != 0;
 }

 void hookEvents () {
 	super.hookEvents ();
 	int windowProc = getDisplay ().windowProc;
 	OS.PtAddCallback (handle, OS.Pt_CB_SELECTION, windowProc, SWT.Selection);
 	OS.PtAddCallback (handle, OS.Pt_CB_TEXT_CHANGED, windowProc, SWT.Modify);
 }

 public int indexOf (String string) {
 	if (!isValidThread ()) error(SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error(SWT.ERROR_WIDGET_DISPOSED);
 	return indexOf (string, 0);
 }

 public int indexOf (String string, int start) {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	if (string == null) error (SWT.ERROR_NULL_ARGUMENT);

 	// NOT DONE - start is ignored
 	byte [] buffer = Converter.wcsToMbcs (null, string, true);
 	return OS.PtListItemPos(handle, buffer) - 1;
 }

 int processModify (int info) {
 	sendEvent (SWT.Modify);
 	return OS.Pt_CONTINUE;
 }

 int processPaint (int damage) {
 	OS.PtSuperClassDraw (OS.PtComboBox (), handle, damage);
 	sendPaintEvent (damage);
 	return OS.Pt_CONTINUE;
 }

 int processSelection (int info) {
 	if (info == 0) return OS.Pt_CONTINUE;
 	PtCallbackInfo_t cbinfo = new PtCallbackInfo_t ();
 	OS.memmove (cbinfo, info, PtCallbackInfo_t.sizeof);
 	if (cbinfo.reason_subtype == OS.Pt_LIST_SELECTION_FINAL) {
 		postEvent(SWT.Selection);
 	}
 	return OS.Pt_CONTINUE;
 }

 void register () {
 	super.register ();
 	int child = OS.PtWidgetChildBack (handle);
 	WidgetTable.put (child, this);
 }

 public void remove (int start, int end) {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0};
 	OS.PtGetResources (handle, args.length / 3, args);
 	if (!(0 < start && start <= end && end < args [1])) {
 		 error (SWT.ERROR_INVALID_RANGE);
 	}
 	int count = end - start + 1;
 	int result = OS.PtListDeleteItemPos (handle, count, start + 1);
 	if (result != 0) error (SWT.ERROR_ITEM_NOT_REMOVED);
 }

 public void remove (int index) {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0};
 	OS.PtGetResources (handle, args.length / 3, args);
 	if (!(0 <= index && index < args [1])) error (SWT.ERROR_INVALID_RANGE);
 	int result = OS.PtListDeleteItemPos (handle, 1, index + 1);
 	if (result != 0) error (SWT.ERROR_ITEM_NOT_REMOVED);
 }

 public void remove (String string) {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	int index = indexOf (string, 0);
 	if (index == -1) error (SWT.ERROR_ITEM_NOT_REMOVED);
 	remove (index);
 }

 public void removeAll () {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	OS.PtListDeleteAllItems (handle);
 }

 public void removeModifyListener (ModifyListener listener) {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
 	if (eventTable == null) return;
 	eventTable.unhook (SWT.Modify, listener);
 }

 public void removeSelectionListener (SelectionListener listener) {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
 	if (eventTable == null) return;
 	eventTable.unhook (SWT.Selection, listener);
 	eventTable.unhook (SWT.DefaultSelection,listener);
 }

 public void select (int index) {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	if (index < 0) return;
 	int [] args = new int [] {OS.Pt_ARG_CBOX_SELECTION_ITEM, index + 1, 0};
 	OS.PtSetResources (handle, args.length / 3, args);
 }

 void setBounds (int x, int y, int width, int height, boolean move, boolean resize) {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	int newHeight = ((style & SWT.DROP_DOWN) != 0) ? getTextHeight() : height;
 	super.setBounds (x, y, width, newHeight, move, resize);
 }

 public void setItem (int index, String string) {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
 	int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0};
 	OS.PtGetResources (handle, args.length / 3, args);
 	if (!(0 <= index && index < args [1])) {
 		error (SWT.ERROR_INVALID_RANGE);
 	}
 	byte [] buffer = Converter.wcsToMbcs (null, string, true);
 	int ptr = OS.malloc (buffer.length);
 	OS.memmove (ptr, buffer, buffer.length);
 	OS.PtListReplaceItemPos (handle, new int [] {ptr}, 1, index + 1);
 	OS.free (ptr);
 }

 public void setItems (String [] items) {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	if (items == null) error (SWT.ERROR_NULL_ARGUMENT);
 	OS.PtListDeleteAllItems (handle);
 	int[] itemsPtr = new int [items.length];
 	for (int i=0; i<itemsPtr.length; i++) {
 		byte [] buffer = Converter.wcsToMbcs (null, items [i], true);
 		int ptr = OS.malloc (buffer.length);
 		OS.memmove (ptr, buffer, buffer.length);
 		itemsPtr [i] = ptr;
 	}
 	OS.PtListAddItems (handle, itemsPtr, itemsPtr.length, 0);
 	for (int i=0; i<itemsPtr.length; i++) {
 		OS.free (itemsPtr [i]);
 	}
 	int [] args = {OS.Pt_ARG_TEXT_STRING, 0, 0};
 	OS.PtSetResources (handle, args.length / 3, args);
 }

 public void setSelection (Point selection) {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	if (selection == null) error (SWT.ERROR_NULL_ARGUMENT);
 	OS.PtTextSetSelection (handle, new int [] {selection.x}, new int [] {selection.y});
 }

 public void setText (String string) {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
 	byte [] buffer = Converter.wcsToMbcs (null, string, true);
 	if ((style & SWT.READ_ONLY) != 0) {
 		int index = OS.PtListItemPos(handle, buffer);
 		if (index > 0) {
 			int [] args = new int [] {OS.Pt_ARG_CBOX_SELECTION_ITEM, index, 0};
 			OS.PtSetResources (handle, args.length / 3, args);
 //			sendEvent (SWT.Modify);
 		}
 		return;
 	}
 	int ptr = OS.malloc (buffer.length);
 	OS.memmove (ptr, buffer, buffer.length);
 	int [] args = {OS.Pt_ARG_TEXT_STRING, ptr, 0};
 	OS.PtSetResources (handle, args.length / 3, args);
 	OS.free (ptr);
 }

 public void setTextLimit (int limit) {
 	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
 	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
 	if (limit == 0) error (SWT.ERROR_CANNOT_BE_ZERO);
 	int [] args = new int [] {OS.Pt_ARG_MAX_LENGTH, limit, 0};
 	OS.PtSetResources (handle, args.length / 3, args);
 }

 int traversalCode (int key_sym, PhKeyEvent_t ke) {
 	int code = super.traversalCode (key_sym, ke);
 	if (key_sym == OS.Pk_Up || key_sym == OS.Pk_Down) {
 		code &= ~(SWT.TRAVERSE_ARROW_NEXT | SWT.TRAVERSE_ARROW_PREVIOUS);
 	}
 	if ((style & SWT.READ_ONLY) == 0) {
 		if (key_sym == OS.Pk_Up || key_sym == OS.Pk_Down) {
 			code &= ~(SWT.TRAVERSE_ARROW_NEXT | SWT.TRAVERSE_ARROW_PREVIOUS);
 		}
 	}
 	return code;
 }

 }
	package org.eclipse.swt.widgets;

	/*
	* (c) Copyright IBM Corp. 2000, 2001.
	* All Rights Reserved
	*/

	import org.eclipse.swt.internal.*;
	import org.eclipse.swt.internal.photon.*;
	import org.eclipse.swt.*;
	import org.eclipse.swt.graphics.*;
	import org.eclipse.swt.events.*;

	public class Combo extends Composite {

	public Combo (Composite parent, int style) {
	super (parent, checkStyle (style));
	}

	static int checkStyle (int style) {
	/*
	* Feature in Windows. It is not possible to create
	* a combo box that has a border using Windows style
	* bits. All combo boxes draw their own border and
	* do not use the standard Windows border styles.
	* Therefore, no matter what style bits are specified,
	* clear the BORDER bits so that the SWT style will
	* match the Windows widget.
	*
	* The Windows behavior is currently implemented on
	* all platforms.
	*/
	style &= ~SWT.BORDER;

	/*
	* Even though it is legal to create this widget
	* with scroll bars, they serve no useful purpose
	* because they do not automatically scroll the
	* widget's client area. The fix is to clear
	* the SWT style.
	*/
	style &= ~(SWT.H_SCROLL \| SWT.V_SCROLL);
	style = checkBits (style, SWT.DROP_DOWN, SWT.SIMPLE, 0, 0, 0, 0);
	if ((style & SWT.SIMPLE) != 0) return style & ~SWT.READ_ONLY;
	return style;
	}

	public Point computeSize (int wHint, int hHint, boolean changed) {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	//NOT DONE: this only works with a DROP_DOWN combo
	if ((style & SWT.SIMPLE) != 0) return new Point(100, 100);
	PhDim_t dim = new PhDim_t();
	if (!OS.PtWidgetIsRealized (handle)) OS.PtExtentWidgetFamily (handle);
	OS.PtWidgetPreferredSize(handle, dim);
	int width = dim.w;
	int height = dim.h;
	int text = OS.PtWidgetChildBack(handle);
	OS.PtWidgetPreferredSize(text, dim);
	height += dim.h;
	PhRect_t rect = new PhRect_t ();
	PhArea_t area = new PhArea_t ();
	OS.PtSetAreaFromWidgetCanvas (text, rect, area);
	width += area.size_w;
	int [] args = new int [] {
	OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0,
	OS.Pt_ARG_ITEMS, 0, 0,
	OS.Pt_ARG_TEXT_FONT, 0, 0,
	};
	OS.PtGetResources (handle, args.length / 3, args);
	int maxWidth = 0;
	rect = new PhRect_t();
	int [] items = new int [1];
	for (int i = 0; i < args [1]; i++) {
	OS.memmove (items, args [4] + (i * 4), 4);
	int length = OS.strlen (items [0]);
	OS.PfExtentText(rect, null, args [7], items [0], length);
	maxWidth = Math.max(maxWidth, rect.lr_x - rect.ul_x + 1);
	}
	width += maxWidth;
	if (wHint != SWT.DEFAULT \|\| hHint != SWT.DEFAULT) {
	rect = new PhRect_t ();
	area = new PhArea_t ();
	rect.lr_x = (short) (wHint - 1);
	rect.lr_y = (short) (hHint - 1);
	OS.PtSetAreaFromWidgetCanvas (handle, rect, area);
	if (wHint != SWT.DEFAULT) width = area.size_w;
	if (hHint != SWT.DEFAULT) height = area.size_h;
	}
	return new Point(width, height);
	}

	void createHandle (int index) {
	state \|= HANDLE;
	Display display = getDisplay ();
	int clazz = display.PtComboBox;
	int parentHandle = parent.handle;
	int textFlags = (style & SWT.READ_ONLY) != 0 ? 0 : OS.Pt_EDITABLE;
	int [] args = {
	OS.Pt_ARG_TEXT_FLAGS, textFlags, OS.Pt_EDITABLE,
	OS.Pt_ARG_CBOX_MAX_VISIBLE_COUNT, 5, 0,
	OS.Pt_ARG_CBOX_FLAGS, (style & SWT.SIMPLE) != 0 ? OS.Pt_COMBOBOX_STATIC: 0, OS.Pt_COMBOBOX_STATIC,
	OS.Pt_ARG_RESIZE_FLAGS, 0, OS.Pt_RESIZE_XY_BITS,
	};
	handle = OS.PtCreateWidget (clazz, parentHandle, args.length / 3, args);
	if (handle == 0) error (SWT.ERROR_NO_HANDLES);
	}

	public void deselect (int index) {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	int [] args = new int [] {OS.Pt_ARG_CBOX_SELECTION_ITEM, 0, 0};
	OS.PtGetResources (handle, args.length / 3, args);
	if (args [1] == index) {
	args = new int [] {
	OS.Pt_ARG_TEXT_STRING, 0, 0,
	OS.Pt_ARG_CBOX_SELECTION_ITEM, 0, 0
	};
	OS.PtSetResources (handle, args.length / 3, args);
	}
	}

	public void deselectAll () {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	int [] args = new int [] {
	OS.Pt_ARG_TEXT_STRING, 0, 0,
	OS.Pt_ARG_CBOX_SELECTION_ITEM, 0, 0
	};
	OS.PtSetResources (handle, args.length / 3, args);
	}

	public void add (String string) {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
	byte [] buffer = Converter.wcsToMbcs (null, string, true);
	int ptr = OS.malloc (buffer.length);
	OS.memmove (ptr, buffer, buffer.length);
	OS.PtListAddItems (handle, new int [] {ptr}, 1, 0);
	OS.free (ptr);
	}

	public void add (String string, int index) {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (index == -1) error (SWT.ERROR_INVALID_RANGE);
	byte [] buffer = Converter.wcsToMbcs (null, string, true);
	int ptr = OS.malloc (buffer.length);
	OS.memmove (ptr, buffer, buffer.length);
	int result = OS.PtListAddItems (handle, new int [] {ptr}, 1, index + 1);
	OS.free (ptr);
	if (result != 0) {
	int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0};
	OS.PtGetResources (handle, args.length / 3, args);
	if (0 <= index && index <= args [1]) error (SWT.ERROR_ITEM_NOT_ADDED);
	error (SWT.ERROR_INVALID_RANGE);
	}
	}

	public void addModifyListener (ModifyListener listener) {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	TypedListener typedListener = new TypedListener (listener);
	addListener (SWT.Modify, typedListener);
	}

	public void addSelectionListener(SelectionListener listener) {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	TypedListener typedListener = new TypedListener (listener);
	addListener (SWT.Selection,typedListener);
	addListener (SWT.DefaultSelection,typedListener);
	}

	protected void checkSubclass () {
	if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS);
	}

	public void clearSelection () {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	OS.PtTextSetSelection (handle, new int [] {0}, new int [] {0});
	}

	void deregister () {
	super.deregister ();
	int child = OS.PtWidgetChildBack (handle);
	WidgetTable.remove (child);
	}

	int focusHandle () {

	/*
	* Fetuare in Photon. The combo box does not receive
	* Pt_CB_GOT_FOCUS and Pt_CB_LOST_FOCUS callbacks itself.
	* Only the internal PtText receives them. The fix is to
	* add these callbacks in the internal PtText.
	*/
	return OS.PtWidgetChildBack (handle);
	}

	public String getItem (int index) {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	int [] args = new int [] {
	OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0,
	OS.Pt_ARG_ITEMS, 0, 0,
	};
	OS.PtGetResources (handle, args.length / 3, args);
	if (!(0 <= index && index < args [1])) {
	error (SWT.ERROR_INVALID_RANGE);
	}
	int [] items = new int [1];
	OS.memmove (items, args [4] + (index * 4), 4);
	int length = OS.strlen (items [0]);
	byte [] buffer = new byte [length];
	OS.memmove (buffer, items [0], length);
	char [] unicode = Converter.mbcsToWcs (null, buffer);
	return new String (unicode);
	}

	public int getItemCount () {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0};
	OS.PtGetResources (handle, args.length / 3, args);
	return args [1];
	}

	public int getItemHeight () {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	//NOT DONE - NOT NEEDED
	return 0;
	}

	public String [] getItems () {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	int [] args = new int [] {
	OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0,
	OS.Pt_ARG_ITEMS, 0, 0,
	};
	OS.PtGetResources (handle, args.length / 3, args);
	int [] items = new int [args [1]];
	OS.memmove (items, args [4], args [1] * 4);
	String [] result = new String [args [1]];
	for (int i=0; i<args [1]; i++) {
	int length = OS.strlen (items [i]);
	byte [] buffer = new byte [length];
	OS.memmove (buffer, items [i], length);
	char [] unicode = Converter.mbcsToWcs (null, buffer);
	result [i] = new String (unicode);
	}
	return result;

	}

	public Point getSelection () {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	if (((style & SWT.DROP_DOWN) != 0) && ((style & SWT.READ_ONLY) != 0)) {
	int [] args = {OS.Pt_ARG_TEXT_STRING, 0, 0};
	OS.PtGetResources (handle, args.length / 3, args);
	int length = 0;
	if (args [1] != 0) length = OS.strlen (args [1]);
	return new Point (0, length);
	}
	// if (textVerify != null) {
	// return new Point (textVerify.start_pos, textVerify.end_pos);
	// }
	int [] start = new int [1], end = new int [1];
	OS.PtTextGetSelection (handle, start, end);
	if (start [0] == -1) {
	int [] args = {OS.Pt_ARG_CURSOR_POSITION, 0, 0};
	OS.PtGetResources (handle, args.length / 3, args);
	start [0] = end [0] = args [1];
	}
	return new Point (start [0], end [0]);
	}

	public int getSelectionIndex () {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	int [] args = new int [] {OS.Pt_ARG_CBOX_SELECTION_ITEM, 0, 0};
	OS.PtGetResources (handle, args.length / 3, args);
	if (args [1] == 0) return -1;
	return args [1] - 1;
	}

	public String getText () {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	int [] args = {OS.Pt_ARG_TEXT_STRING, 0, 0};
	OS.PtGetResources (handle, args.length / 3, args);
	if (args [1] == 0) return "";
	int length = OS.strlen (args [1]);
	byte [] buffer = new byte [length];
	OS.memmove (buffer, args [1], length);
	char [] unicode = Converter.mbcsToWcs (null, buffer);
	return new String (unicode);
	}

	public int getTextHeight () {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	//NOT DONE - Only works for DROP_DOWN
	PhDim_t dim = new PhDim_t();
	if (!OS.PtWidgetIsRealized (handle)) OS.PtExtentWidgetFamily (handle);
	OS.PtWidgetPreferredSize(handle, dim);
	int height = dim.h;
	int text = OS.PtWidgetChildBack(handle);
	OS.PtWidgetPreferredSize(text, dim);
	height += dim.h;
	return height;
	}

	public int getTextLimit () {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	int [] args = new int [] {OS.Pt_ARG_MAX_LENGTH, 0, 0};
	OS.PtGetResources (handle, args.length / 3, args);
	return args [1];
	}

	boolean hasFocus () {
	return OS.PtIsFocused (handle) != 0;
	}

	void hookEvents () {
	super.hookEvents ();
	int windowProc = getDisplay ().windowProc;
	OS.PtAddCallback (handle, OS.Pt_CB_SELECTION, windowProc, SWT.Selection);
	OS.PtAddCallback (handle, OS.Pt_CB_TEXT_CHANGED, windowProc, SWT.Modify);
	}

	public int indexOf (String string) {
	if (!isValidThread ()) error(SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error(SWT.ERROR_WIDGET_DISPOSED);
	return indexOf (string, 0);
	}

	public int indexOf (String string, int start) {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	if (string == null) error (SWT.ERROR_NULL_ARGUMENT);

	// NOT DONE - start is ignored
	byte [] buffer = Converter.wcsToMbcs (null, string, true);
	return OS.PtListItemPos(handle, buffer) - 1;
	}

	int processModify (int info) {
	sendEvent (SWT.Modify);
	return OS.Pt_CONTINUE;
	}

	int processPaint (int damage) {
	OS.PtSuperClassDraw (OS.PtComboBox (), handle, damage);
	sendPaintEvent (damage);
	return OS.Pt_CONTINUE;
	}

	int processSelection (int info) {
	if (info == 0) return OS.Pt_CONTINUE;
	PtCallbackInfo_t cbinfo = new PtCallbackInfo_t ();
	OS.memmove (cbinfo, info, PtCallbackInfo_t.sizeof);
	if (cbinfo.reason_subtype == OS.Pt_LIST_SELECTION_FINAL) {
	postEvent(SWT.Selection);
	}
	return OS.Pt_CONTINUE;
	}

	void register () {
	super.register ();
	int child = OS.PtWidgetChildBack (handle);
	WidgetTable.put (child, this);
	}

	public void remove (int start, int end) {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0};
	OS.PtGetResources (handle, args.length / 3, args);
	if (!(0 < start && start <= end && end < args [1])) {
	error (SWT.ERROR_INVALID_RANGE);
	}
	int count = end - start + 1;
	int result = OS.PtListDeleteItemPos (handle, count, start + 1);
	if (result != 0) error (SWT.ERROR_ITEM_NOT_REMOVED);
	}

	public void remove (int index) {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0};
	OS.PtGetResources (handle, args.length / 3, args);
	if (!(0 <= index && index < args [1])) error (SWT.ERROR_INVALID_RANGE);
	int result = OS.PtListDeleteItemPos (handle, 1, index + 1);
	if (result != 0) error (SWT.ERROR_ITEM_NOT_REMOVED);
	}

	public void remove (String string) {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	int index = indexOf (string, 0);
	if (index == -1) error (SWT.ERROR_ITEM_NOT_REMOVED);
	remove (index);
	}

	public void removeAll () {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	OS.PtListDeleteAllItems (handle);
	}

	public void removeModifyListener (ModifyListener listener) {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (eventTable == null) return;
	eventTable.unhook (SWT.Modify, listener);
	}

	public void removeSelectionListener (SelectionListener listener) {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (eventTable == null) return;
	eventTable.unhook (SWT.Selection, listener);
	eventTable.unhook (SWT.DefaultSelection,listener);
	}

	public void select (int index) {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	if (index < 0) return;
	int [] args = new int [] {OS.Pt_ARG_CBOX_SELECTION_ITEM, index + 1, 0};
	OS.PtSetResources (handle, args.length / 3, args);
	}

	void setBounds (int x, int y, int width, int height, boolean move, boolean resize) {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	int newHeight = ((style & SWT.DROP_DOWN) != 0) ? getTextHeight() : height;
	super.setBounds (x, y, width, newHeight, move, resize);
	}

	public void setItem (int index, String string) {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
	int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0};
	OS.PtGetResources (handle, args.length / 3, args);
	if (!(0 <= index && index < args [1])) {
	error (SWT.ERROR_INVALID_RANGE);
	}
	byte [] buffer = Converter.wcsToMbcs (null, string, true);
	int ptr = OS.malloc (buffer.length);
	OS.memmove (ptr, buffer, buffer.length);
	OS.PtListReplaceItemPos (handle, new int [] {ptr}, 1, index + 1);
	OS.free (ptr);
	}

	public void setItems (String [] items) {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	if (items == null) error (SWT.ERROR_NULL_ARGUMENT);
	OS.PtListDeleteAllItems (handle);
	int[] itemsPtr = new int [items.length];
	for (int i=0; i<itemsPtr.length; i++) {
	byte [] buffer = Converter.wcsToMbcs (null, items [i], true);
	int ptr = OS.malloc (buffer.length);
	OS.memmove (ptr, buffer, buffer.length);
	itemsPtr [i] = ptr;
	}
	OS.PtListAddItems (handle, itemsPtr, itemsPtr.length, 0);
	for (int i=0; i<itemsPtr.length; i++) {
	OS.free (itemsPtr [i]);
	}
	int [] args = {OS.Pt_ARG_TEXT_STRING, 0, 0};
	OS.PtSetResources (handle, args.length / 3, args);
	}

	public void setSelection (Point selection) {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	if (selection == null) error (SWT.ERROR_NULL_ARGUMENT);
	OS.PtTextSetSelection (handle, new int [] {selection.x}, new int [] {selection.y});
	}

	public void setText (String string) {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
	byte [] buffer = Converter.wcsToMbcs (null, string, true);
	if ((style & SWT.READ_ONLY) != 0) {
	int index = OS.PtListItemPos(handle, buffer);
	if (index > 0) {
	int [] args = new int [] {OS.Pt_ARG_CBOX_SELECTION_ITEM, index, 0};
	OS.PtSetResources (handle, args.length / 3, args);
	// sendEvent (SWT.Modify);
	}
	return;
	}
	int ptr = OS.malloc (buffer.length);
	OS.memmove (ptr, buffer, buffer.length);
	int [] args = {OS.Pt_ARG_TEXT_STRING, ptr, 0};
	OS.PtSetResources (handle, args.length / 3, args);
	OS.free (ptr);
	}

	public void setTextLimit (int limit) {
	if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
	if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
	if (limit == 0) error (SWT.ERROR_CANNOT_BE_ZERO);
	int [] args = new int [] {OS.Pt_ARG_MAX_LENGTH, limit, 0};
	OS.PtSetResources (handle, args.length / 3, args);
	}

	int traversalCode (int key_sym, PhKeyEvent_t ke) {
	int code = super.traversalCode (key_sym, ke);
	if (key_sym == OS.Pk_Up \|\| key_sym == OS.Pk_Down) {
	code &= ~(SWT.TRAVERSE_ARROW_NEXT \| SWT.TRAVERSE_ARROW_PREVIOUS);
	}
	if ((style & SWT.READ_ONLY) == 0) {
	if (key_sym == OS.Pk_Up \|\| key_sym == OS.Pk_Down) {
	code &= ~(SWT.TRAVERSE_ARROW_NEXT \| SWT.TRAVERSE_ARROW_PREVIOUS);
	}
	}
	return code;
	}

	}