src/motif/choice.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        choice.cpp
// Purpose:     wxChoice
// Author:      Julian Smart
// Modified by:
// Created:     17/09/98
// RCS-ID:      $Id$
// Copyright:   (c) Julian Smart
// Licence:   	wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
#pragma implementation "choice.h"
#endif

// For compilers that support precompilation, includes "wx.h".
#include "wx/choice.h"
#include "wx/utils.h"

#include <Xm/Xm.h>
#include <Xm/PushBG.h>
#include <Xm/PushB.h>
#include <Xm/RowColumn.h>

#include "wx/motif/private.h"

#if !USE_SHARED_LIBRARY
IMPLEMENT_DYNAMIC_CLASS(wxChoice, wxControl)
#endif

void wxChoiceCallback (Widget w, XtPointer clientData,
		  XtPointer ptr);

wxChoice::wxChoice()
{
    m_noStrings = 0;
    m_buttonWidget = (WXWidget) 0;
    m_menuWidget = (WXWidget) 0;
    m_widgetList = (WXWidget*) 0;
    m_formWidget = (WXWidget) 0;
}

bool wxChoice::Create(wxWindow *parent, wxWindowID id,
           const wxPoint& pos,
           const wxSize& size,
		   int n, const wxString choices[],
		   long style,
           const wxValidator& validator,
           const wxString& name)
{
    SetName(name);
    SetValidator(validator);
    m_noStrings = 0; // Starts off with none, incremented in Append
    m_windowStyle = style;
    m_buttonWidget = (WXWidget) 0;
    m_menuWidget = (WXWidget) 0;
    m_widgetList = (WXWidget*) 0;
    m_formWidget = (WXWidget) 0;

    if (parent) parent->AddChild(this);

    if ( id == -1 )
    	m_windowId = (int)NewControlId();
    else
	    m_windowId = id;

    m_backgroundColour = parent->GetBackgroundColour();
    m_foregroundColour = parent->GetForegroundColour();
    m_windowFont = parent->GetFont();

    Widget parentWidget = (Widget) parent->GetClientWidget();

    m_formWidget = (WXWidget) XtVaCreateManagedWidget ((char*) (const char*) name,
					xmRowColumnWidgetClass, parentWidget,
					XmNmarginHeight, 0,
					XmNmarginWidth, 0,
					XmNpacking, XmPACK_TIGHT,
					XmNorientation, XmHORIZONTAL,
					NULL);

    XtVaSetValues ((Widget) m_formWidget, XmNspacing, 0, NULL);

   /*
    * Create the popup menu
    */
    m_menuWidget = (WXWidget) XmCreatePulldownMenu ((Widget) m_formWidget, "choiceMenu", NULL, 0);

//    int i;
    if (n > 0)
    {
        int i;
        for (i = 0; i < n; i++)
            Append (choices[i]);
    }

   /*
    * Create button
    */
    Arg args[10];
    Cardinal argcnt = 0;

    XtSetArg (args[argcnt], XmNsubMenuId, (Widget) m_menuWidget);
    argcnt++;
    XtSetArg (args[argcnt], XmNmarginWidth, 0);
    argcnt++;
    XtSetArg (args[argcnt], XmNmarginHeight, 0);
    argcnt++;
    XtSetArg (args[argcnt], XmNpacking, XmPACK_TIGHT);
    argcnt++;
    m_buttonWidget = (WXWidget) XmCreateOptionMenu ((Widget) m_formWidget, "choiceButton", args, argcnt);

    m_mainWidget = m_buttonWidget;

    XtManageChild ((Widget) m_buttonWidget);

    // New code from Roland Haenel (roland_haenel@ac.cybercity.de)
    // Some time ago, I reported a problem with wxChoice-items under
    // Linux and Motif 2.0 (they caused sporadic GPFs). Now it seems
    // that I have found the code responsible for this behaviour.
#if XmVersion >= 1002
#if XmVersion <  2000
    Widget optionLabel = XmOptionLabelGadget ((Widget) m_buttonWidget);
    XtUnmanageChild (optionLabel);
#endif
#endif

    XtVaSetValues((Widget) m_formWidget, XmNresizePolicy, XmRESIZE_NONE, NULL);

    ChangeFont(FALSE);

    AttachWidget (parent, m_buttonWidget, m_formWidget, pos.x, pos.y, size.x, size.y);

    ChangeBackgroundColour();

    return TRUE;
}

wxChoice::~wxChoice()
{
  // For some reason destroying the menuWidget
  // can cause crashes on some machines. It will
  // be deleted implicitly by deleting the parent form
  // anyway.
//  XtDestroyWidget (menuWidget);
    if (m_widgetList)
        delete[] m_widgetList;

    if (GetMainWidget())
    {
        DetachWidget(GetMainWidget()); // Removes event handlers

        XtDestroyWidget((Widget) m_formWidget);
        m_formWidget = (WXWidget) 0;

        // Presumably the other widgets have been deleted now, via the form
        m_mainWidget = (WXWidget) 0;
        m_buttonWidget = (WXWidget) 0;
    }
}

void wxChoice::Append(const wxString& item)
{
  wxStripMenuCodes ((char *)(const char *)item, wxBuffer);
  Widget w = XtVaCreateManagedWidget (wxBuffer,
#if USE_GADGETS
				      xmPushButtonGadgetClass, (Widget) m_menuWidget,
#else
				      xmPushButtonWidgetClass, (Widget) m_menuWidget,
#endif
				      NULL);

  DoChangeBackgroundColour((WXWidget) w, m_backgroundColour);

  if (m_windowFont.Ok())
    XtVaSetValues (w,
		   XmNfontList, (XmFontList) m_windowFont.GetFontList(1.0, XtDisplay((Widget) m_formWidget)),
		   NULL);

  WXWidget *new_widgetList = new WXWidget[m_noStrings + 1];
  int i;
  if (m_widgetList)
    for (i = 0; i < m_noStrings; i++)
      new_widgetList[i] = m_widgetList[i];

  new_widgetList[m_noStrings] = (WXWidget) w;

  if (m_widgetList)
    delete[] m_widgetList;
  m_widgetList = new_widgetList;

  char mnem = wxFindMnemonic ((char*) (const char*) item);
  if (mnem != 0)
    XtVaSetValues (w, XmNmnemonic, mnem, NULL);

  XtAddCallback (w, XmNactivateCallback, (XtCallbackProc) wxChoiceCallback, (XtPointer) this);

  if (m_noStrings == 0 && m_buttonWidget)
    {
      XtVaSetValues ((Widget) m_buttonWidget, XmNmenuHistory, w, NULL);
      Widget label = XmOptionButtonGadget ((Widget) m_buttonWidget);
      XmString text = XmStringCreateSimple ((char*) (const char*) item);
      XtVaSetValues (label,
		     XmNlabelString, text,
		     NULL);
      XmStringFree (text);
    }
  wxNode *node = m_stringList.Add (item);
  XtVaSetValues (w, XmNuserData, node->Data (), NULL);

  m_noStrings ++;
}

void wxChoice::Delete(int WXUNUSED(n))
{
    wxFAIL_MSG( "Sorry, wxChoice::Delete isn't implemented yet. Maybe you'd like to volunteer? :-)" );

    // What should we do -- remove the callback for this button widget,
    // delete the m_stringList entry, delete the button widget, construct a new widget list
    // (see Append)

    // TODO
    m_noStrings --;
}

void wxChoice::Clear()
{
    m_stringList.Clear ();
    int i;
    for (i = 0; i < m_noStrings; i++)
    {
        XtUnmanageChild ((Widget) m_widgetList[i]);
        XtDestroyWidget ((Widget) m_widgetList[i]);
    }
    if (m_noStrings)
        delete[] m_widgetList;
    m_widgetList = (WXWidget*) NULL;
    if (m_buttonWidget)
        XtVaSetValues ((Widget) m_buttonWidget, XmNmenuHistory, (Widget) NULL, NULL);
    m_noStrings = 0;
}

int wxChoice::GetSelection() const
{
  XmString text;
  char *s;
  Widget label = XmOptionButtonGadget ((Widget) m_buttonWidget);
  XtVaGetValues (label,
         XmNlabelString, &text,
         NULL);

  if (XmStringGetLtoR (text, XmSTRING_DEFAULT_CHARSET, &s))
  {
      int i = 0;
      for (wxNode * node = m_stringList.First (); node; node = node->Next ())
      {
        char *s1 = (char *) node->Data ();
        if (s1 == s || strcmp (s1, s) == 0)
        {
          XmStringFree(text) ;
          XtFree (s);
          return i;
        }
        else
            i++;
      }            // for()

      XmStringFree(text) ;
      XtFree (s);
      return -1;
  }
  XmStringFree(text) ;
  return -1;
}

void wxChoice::SetSelection(int n)
{
  m_inSetValue = TRUE;

  wxNode *node = m_stringList.Nth (n);
  if (node)
    {
      Dimension selectionWidth, selectionHeight;

      char *s = (char *) node->Data ();
      XmString text = XmStringCreateSimple (s);
      XtVaGetValues ((Widget) m_widgetList[n], XmNwidth, &selectionWidth, XmNheight, &selectionHeight, NULL);
      Widget label = XmOptionButtonGadget ((Widget) m_buttonWidget);
      XtVaSetValues (label,
                     XmNlabelString, text,
                     NULL);
      XmStringFree (text);
      XtVaSetValues ((Widget) m_buttonWidget,
                     XmNwidth, selectionWidth, XmNheight, selectionHeight,
                     XmNmenuHistory, (Widget) m_widgetList[n], NULL);
    }
  m_inSetValue = FALSE;
}

int wxChoice::FindString(const wxString& s) const
{
    int i = 0;
    for (wxNode * node = m_stringList.First (); node; node = node->Next ())
    {
        char *s1 = (char *) node->Data ();
        if (s == s1)
        {
            return i;
        }
        else
            i++;
    }
    return -1;
}

wxString wxChoice::GetString(int n) const
{
  wxNode *node = m_stringList.Nth (n);
  if (node)
    return wxString((char *) node->Data ());
  else
    return wxEmptyString;
}

void wxChoice::SetColumns(int n)
{
  if (n<1) n = 1 ;

  short numColumns = n ;
  Arg args[3];

  XtSetArg(args[0], XmNnumColumns, numColumns);
  XtSetArg(args[1], XmNpacking, XmPACK_COLUMN);
  XtSetValues((Widget) m_menuWidget,args,2) ;
}

int wxChoice::GetColumns(void) const
{
  short numColumns ;

  XtVaGetValues((Widget) m_menuWidget,XmNnumColumns,&numColumns,NULL) ;
  return numColumns ;
}

void wxChoice::SetFocus()
{
  XmProcessTraversal(XtParent((Widget)m_mainWidget), XmTRAVERSE_CURRENT);
}

void wxChoice::SetSize(int x, int y, int width, int height, int sizeFlags)
{
    XtVaSetValues((Widget) m_formWidget, XmNresizePolicy, XmRESIZE_ANY, NULL);
    bool managed = XtIsManaged((Widget) m_formWidget);

    if (managed)
        XtUnmanageChild ((Widget) m_formWidget);

    int actualWidth = width, actualHeight = height;

    if (width > -1)
    {
        int i;
        for (i = 0; i < m_noStrings; i++)
            XtVaSetValues ((Widget) m_widgetList[i], XmNwidth, actualWidth, NULL);
        XtVaSetValues ((Widget) m_buttonWidget, XmNwidth, actualWidth,
             NULL);
    }
    if (height > -1)
    {
        int i;
        for (i = 0; i < m_noStrings; i++)
            XtVaSetValues ((Widget) m_widgetList[i], XmNheight, actualHeight, NULL);
        XtVaSetValues ((Widget) m_buttonWidget, XmNheight, actualHeight,
             NULL);
    }

    if (managed)
        XtManageChild ((Widget) m_formWidget);
    XtVaSetValues((Widget) m_formWidget, XmNresizePolicy, XmRESIZE_NONE, NULL);

    wxControl::SetSize (x, y, width, height, sizeFlags);
}

wxString wxChoice::GetStringSelection () const
{
    int sel = GetSelection ();
    if (sel > -1)
        return wxString(this->GetString (sel));
    else
        return wxEmptyString;
}

bool wxChoice::SetStringSelection (const wxString& s)
{
    int sel = FindString (s);
    if (sel > -1)
        {
            SetSelection (sel);
            return TRUE;
        }
    else
        return FALSE;
}

void wxChoice::Command(wxCommandEvent & event)
{
    SetSelection (event.GetInt());
    ProcessCommand (event);
}

void wxChoiceCallback (Widget w, XtPointer clientData, XtPointer WXUNUSED(ptr))
{
    wxChoice *item = (wxChoice *) clientData;
    if (item)
    {
        if (item->InSetValue())
            return;

        char *s = NULL;
        XtVaGetValues (w, XmNuserData, &s, NULL);
        if (s)
        {
            wxCommandEvent event (wxEVT_COMMAND_CHOICE_SELECTED, item->GetId());
            event.SetEventObject(item);
            event.m_commandInt = item->FindString (s);
//            event.m_commandString = s;
            item->ProcessCommand (event);
        }
    }
}

void wxChoice::ChangeFont(bool keepOriginalSize)
{
    // Note that this causes the widget to be resized back
    // to its original size! We therefore have to set the size
    // back again. TODO: a better way in Motif?
    if (m_windowFont.Ok())
    {
        int width, height, width1, height1;
        GetSize(& width, & height);

        XmFontList fontList = (XmFontList) m_windowFont.GetFontList(1.0, XtDisplay((Widget) m_mainWidget));
        XtVaSetValues ((Widget) m_mainWidget, XmNfontList, fontList, NULL);
        XtVaSetValues ((Widget) m_buttonWidget, XmNfontList, fontList, NULL);

        /* TODO: why does this cause a crash in XtWidgetToApplicationContext?
        int i;
        for (i = 0; i < m_noStrings; i++)
            XtVaSetValues ((Widget) m_widgetList[i], XmNfontList, fontList, NULL);
        */
        GetSize(& width1, & height1);
        if (keepOriginalSize && (width != width1 || height != height1))
        {
            SetSize(-1, -1, width, height);
        }
    }
}

void wxChoice::ChangeBackgroundColour()
{
    DoChangeBackgroundColour(m_formWidget, m_backgroundColour);
    DoChangeBackgroundColour(m_buttonWidget, m_backgroundColour);
    DoChangeBackgroundColour(m_menuWidget, m_backgroundColour);
    int i;
    for (i = 0; i < m_noStrings; i++)
        DoChangeBackgroundColour(m_widgetList[i], m_backgroundColour);
}

void wxChoice::ChangeForegroundColour()
{
    DoChangeForegroundColour(m_formWidget, m_foregroundColour);
    DoChangeForegroundColour(m_buttonWidget, m_foregroundColour);
    DoChangeForegroundColour(m_menuWidget, m_foregroundColour);
    int i;
    for (i = 0; i < m_noStrings; i++)
        DoChangeForegroundColour(m_widgetList[i], m_foregroundColour);
}
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: choice.cpp
	3	// Purpose: wxChoice
	4	// Author: Julian Smart
	5	// Modified by:
	6	// Created: 17/09/98
	7	// RCS-ID: $Id$
	8	// Copyright: (c) Julian Smart
	9	// Licence: wxWindows licence
	10	/////////////////////////////////////////////////////////////////////////////
	11
	12	#ifdef __GNUG__
	13	#pragma implementation "choice.h"
	14	#endif
	15
	16	// For compilers that support precompilation, includes "wx.h".
	17	#include "wx/choice.h"
	18	#include "wx/utils.h"
	19
	20	#include <Xm/Xm.h>
	21	#include <Xm/PushBG.h>
	22	#include <Xm/PushB.h>
	23	#include <Xm/RowColumn.h>
	24
	25	#include "wx/motif/private.h"
	26
	27	#if !USE_SHARED_LIBRARY
	28	IMPLEMENT_DYNAMIC_CLASS(wxChoice, wxControl)
	29	#endif
	30
	31	void wxChoiceCallback (Widget w, XtPointer clientData,
	32	XtPointer ptr);
	33
	34	wxChoice::wxChoice()
	35	{
	36	m_noStrings = 0;
	37	m_buttonWidget = (WXWidget) 0;
	38	m_menuWidget = (WXWidget) 0;
	39	m_widgetList = (WXWidget*) 0;
	40	m_formWidget = (WXWidget) 0;
	41	}
	42
	43	bool wxChoice::Create(wxWindow *parent, wxWindowID id,
	44	const wxPoint& pos,
	45	const wxSize& size,
	46	int n, const wxString choices[],
	47	long style,
	48	const wxValidator& validator,
	49	const wxString& name)
	50	{
	51	SetName(name);
	52	SetValidator(validator);
	53	m_noStrings = 0; // Starts off with none, incremented in Append
	54	m_windowStyle = style;
	55	m_buttonWidget = (WXWidget) 0;
	56	m_menuWidget = (WXWidget) 0;
	57	m_widgetList = (WXWidget*) 0;
	58	m_formWidget = (WXWidget) 0;
	59
	60	if (parent) parent->AddChild(this);
	61
	62	if ( id == -1 )
	63	m_windowId = (int)NewControlId();
	64	else
	65	m_windowId = id;
	66
	67	m_backgroundColour = parent->GetBackgroundColour();
	68	m_foregroundColour = parent->GetForegroundColour();
	69	m_windowFont = parent->GetFont();
	70
	71	Widget parentWidget = (Widget) parent->GetClientWidget();
	72
	73	m_formWidget = (WXWidget) XtVaCreateManagedWidget ((char) (const char) name,
	74	xmRowColumnWidgetClass, parentWidget,
	75	XmNmarginHeight, 0,
	76	XmNmarginWidth, 0,
	77	XmNpacking, XmPACK_TIGHT,
	78	XmNorientation, XmHORIZONTAL,
	79	NULL);
	80
	81	XtVaSetValues ((Widget) m_formWidget, XmNspacing, 0, NULL);
	82
	83	/*
	84	* Create the popup menu
	85	*/
	86	m_menuWidget = (WXWidget) XmCreatePulldownMenu ((Widget) m_formWidget, "choiceMenu", NULL, 0);
	87
	88	// int i;
	89	if (n > 0)
	90	{
	91	int i;
	92	for (i = 0; i < n; i++)
	93	Append (choices[i]);
	94	}
	95
	96	/*
	97	* Create button
	98	*/
	99	Arg args[10];
	100	Cardinal argcnt = 0;
	101
	102	XtSetArg (args[argcnt], XmNsubMenuId, (Widget) m_menuWidget);
	103	argcnt++;
	104	XtSetArg (args[argcnt], XmNmarginWidth, 0);
	105	argcnt++;
	106	XtSetArg (args[argcnt], XmNmarginHeight, 0);
	107	argcnt++;
	108	XtSetArg (args[argcnt], XmNpacking, XmPACK_TIGHT);
	109	argcnt++;
	110	m_buttonWidget = (WXWidget) XmCreateOptionMenu ((Widget) m_formWidget, "choiceButton", args, argcnt);
	111
	112	m_mainWidget = m_buttonWidget;
	113
	114	XtManageChild ((Widget) m_buttonWidget);
	115
	116	// New code from Roland Haenel (roland_haenel@ac.cybercity.de)
	117	// Some time ago, I reported a problem with wxChoice-items under
	118	// Linux and Motif 2.0 (they caused sporadic GPFs). Now it seems
	119	// that I have found the code responsible for this behaviour.
	120	#if XmVersion >= 1002
	121	#if XmVersion < 2000
	122	Widget optionLabel = XmOptionLabelGadget ((Widget) m_buttonWidget);
	123	XtUnmanageChild (optionLabel);
	124	#endif
	125	#endif
	126
	127	XtVaSetValues((Widget) m_formWidget, XmNresizePolicy, XmRESIZE_NONE, NULL);
	128
	129	ChangeFont(FALSE);
	130
	131	AttachWidget (parent, m_buttonWidget, m_formWidget, pos.x, pos.y, size.x, size.y);
	132
	133	ChangeBackgroundColour();
	134
	135	return TRUE;
	136	}
	137
	138	wxChoice::~wxChoice()
	139	{
	140	// For some reason destroying the menuWidget
	141	// can cause crashes on some machines. It will
	142	// be deleted implicitly by deleting the parent form
	143	// anyway.
	144	// XtDestroyWidget (menuWidget);
	145	if (m_widgetList)
	146	delete[] m_widgetList;
	147
	148	if (GetMainWidget())
	149	{
	150	DetachWidget(GetMainWidget()); // Removes event handlers
	151
	152	XtDestroyWidget((Widget) m_formWidget);
	153	m_formWidget = (WXWidget) 0;
	154
	155	// Presumably the other widgets have been deleted now, via the form
	156	m_mainWidget = (WXWidget) 0;
	157	m_buttonWidget = (WXWidget) 0;
	158	}
	159	}
	160
	161	void wxChoice::Append(const wxString& item)
	162	{
	163	wxStripMenuCodes ((char )(const char )item, wxBuffer);
	164	Widget w = XtVaCreateManagedWidget (wxBuffer,
	165	#if USE_GADGETS
	166	xmPushButtonGadgetClass, (Widget) m_menuWidget,
	167	#else
	168	xmPushButtonWidgetClass, (Widget) m_menuWidget,
	169	#endif
	170	NULL);
	171
	172	DoChangeBackgroundColour((WXWidget) w, m_backgroundColour);
	173
	174	if (m_windowFont.Ok())
	175	XtVaSetValues (w,
	176	XmNfontList, (XmFontList) m_windowFont.GetFontList(1.0, XtDisplay((Widget) m_formWidget)),
	177	NULL);
	178
	179	WXWidget *new_widgetList = new WXWidget[m_noStrings + 1];
	180	int i;
	181	if (m_widgetList)
	182	for (i = 0; i < m_noStrings; i++)
	183	new_widgetList[i] = m_widgetList[i];
	184
	185	new_widgetList[m_noStrings] = (WXWidget) w;
	186
	187	if (m_widgetList)
	188	delete[] m_widgetList;
	189	m_widgetList = new_widgetList;
	190
	191	char mnem = wxFindMnemonic ((char) (const char) item);
	192	if (mnem != 0)
	193	XtVaSetValues (w, XmNmnemonic, mnem, NULL);
	194
	195	XtAddCallback (w, XmNactivateCallback, (XtCallbackProc) wxChoiceCallback, (XtPointer) this);
	196
	197	if (m_noStrings == 0 && m_buttonWidget)
	198	{
	199	XtVaSetValues ((Widget) m_buttonWidget, XmNmenuHistory, w, NULL);
	200	Widget label = XmOptionButtonGadget ((Widget) m_buttonWidget);
	201	XmString text = XmStringCreateSimple ((char) (const char) item);
	202	XtVaSetValues (label,
	203	XmNlabelString, text,
	204	NULL);
	205	XmStringFree (text);
	206	}
	207	wxNode *node = m_stringList.Add (item);
	208	XtVaSetValues (w, XmNuserData, node->Data (), NULL);
	209
	210	m_noStrings ++;
	211	}
	212
	213	void wxChoice::Delete(int WXUNUSED(n))
	214	{
	215	wxFAIL_MSG( "Sorry, wxChoice::Delete isn't implemented yet. Maybe you'd like to volunteer? :-)" );
	216
	217	// What should we do -- remove the callback for this button widget,
	218	// delete the m_stringList entry, delete the button widget, construct a new widget list
	219	// (see Append)
	220
	221	// TODO
	222	m_noStrings --;
	223	}
	224
	225	void wxChoice::Clear()
	226	{
	227	m_stringList.Clear ();
	228	int i;
	229	for (i = 0; i < m_noStrings; i++)
	230	{
	231	XtUnmanageChild ((Widget) m_widgetList[i]);
	232	XtDestroyWidget ((Widget) m_widgetList[i]);
	233	}
	234	if (m_noStrings)
	235	delete[] m_widgetList;
	236	m_widgetList = (WXWidget*) NULL;
	237	if (m_buttonWidget)
	238	XtVaSetValues ((Widget) m_buttonWidget, XmNmenuHistory, (Widget) NULL, NULL);
	239	m_noStrings = 0;
	240	}
	241
	242	int wxChoice::GetSelection() const
	243	{
	244	XmString text;
	245	char *s;
	246	Widget label = XmOptionButtonGadget ((Widget) m_buttonWidget);
	247	XtVaGetValues (label,
	248	XmNlabelString, &text,
	249	NULL);
	250
	251	if (XmStringGetLtoR (text, XmSTRING_DEFAULT_CHARSET, &s))
	252	{
	253	int i = 0;
	254	for (wxNode * node = m_stringList.First (); node; node = node->Next ())
	255	{
	256	char s1 = (char ) node->Data ();
	257	if (s1 == s \|\| strcmp (s1, s) == 0)
	258	{
	259	XmStringFree(text) ;
	260	XtFree (s);
	261	return i;
	262	}
	263	else
	264	i++;
	265	} // for()
	266
	267	XmStringFree(text) ;
	268	XtFree (s);
	269	return -1;
	270	}
	271	XmStringFree(text) ;
	272	return -1;
	273	}
	274
	275	void wxChoice::SetSelection(int n)
	276	{
	277	m_inSetValue = TRUE;
	278
	279	wxNode *node = m_stringList.Nth (n);
	280	if (node)
	281	{
	282	Dimension selectionWidth, selectionHeight;
	283
	284	char s = (char ) node->Data ();
	285	XmString text = XmStringCreateSimple (s);
	286	XtVaGetValues ((Widget) m_widgetList[n], XmNwidth, &selectionWidth, XmNheight, &selectionHeight, NULL);
	287	Widget label = XmOptionButtonGadget ((Widget) m_buttonWidget);
	288	XtVaSetValues (label,
	289	XmNlabelString, text,
	290	NULL);
	291	XmStringFree (text);
	292	XtVaSetValues ((Widget) m_buttonWidget,
	293	XmNwidth, selectionWidth, XmNheight, selectionHeight,
	294	XmNmenuHistory, (Widget) m_widgetList[n], NULL);
	295	}
	296	m_inSetValue = FALSE;
	297	}
	298
	299	int wxChoice::FindString(const wxString& s) const
	300	{
	301	int i = 0;
	302	for (wxNode * node = m_stringList.First (); node; node = node->Next ())
	303	{
	304	char s1 = (char ) node->Data ();
	305	if (s == s1)
	306	{
	307	return i;
	308	}
	309	else
	310	i++;
	311	}
	312	return -1;
	313	}
	314
	315	wxString wxChoice::GetString(int n) const
	316	{
	317	wxNode *node = m_stringList.Nth (n);
	318	if (node)
	319	return wxString((char *) node->Data ());
	320	else
	321	return wxEmptyString;
	322	}
	323
	324	void wxChoice::SetColumns(int n)
	325	{
	326	if (n<1) n = 1 ;
	327
	328	short numColumns = n ;
	329	Arg args[3];
	330
	331	XtSetArg(args[0], XmNnumColumns, numColumns);
	332	XtSetArg(args[1], XmNpacking, XmPACK_COLUMN);
	333	XtSetValues((Widget) m_menuWidget,args,2) ;
	334	}
	335
	336	int wxChoice::GetColumns(void) const
	337	{
	338	short numColumns ;
	339
	340	XtVaGetValues((Widget) m_menuWidget,XmNnumColumns,&numColumns,NULL) ;
	341	return numColumns ;
	342	}
	343
	344	void wxChoice::SetFocus()
	345	{
	346	XmProcessTraversal(XtParent((Widget)m_mainWidget), XmTRAVERSE_CURRENT);
	347	}
	348
	349	void wxChoice::SetSize(int x, int y, int width, int height, int sizeFlags)
	350	{
	351	XtVaSetValues((Widget) m_formWidget, XmNresizePolicy, XmRESIZE_ANY, NULL);
	352	bool managed = XtIsManaged((Widget) m_formWidget);
	353
	354	if (managed)
	355	XtUnmanageChild ((Widget) m_formWidget);
	356
	357	int actualWidth = width, actualHeight = height;
	358
	359	if (width > -1)
	360	{
	361	int i;
	362	for (i = 0; i < m_noStrings; i++)
	363	XtVaSetValues ((Widget) m_widgetList[i], XmNwidth, actualWidth, NULL);
	364	XtVaSetValues ((Widget) m_buttonWidget, XmNwidth, actualWidth,
	365	NULL);
	366	}
	367	if (height > -1)
	368	{
	369	int i;
	370	for (i = 0; i < m_noStrings; i++)
	371	XtVaSetValues ((Widget) m_widgetList[i], XmNheight, actualHeight, NULL);
	372	XtVaSetValues ((Widget) m_buttonWidget, XmNheight, actualHeight,
	373	NULL);
	374	}
	375
	376	if (managed)
	377	XtManageChild ((Widget) m_formWidget);
	378	XtVaSetValues((Widget) m_formWidget, XmNresizePolicy, XmRESIZE_NONE, NULL);
	379
	380	wxControl::SetSize (x, y, width, height, sizeFlags);
	381	}
	382
	383	wxString wxChoice::GetStringSelection () const
	384	{
	385	int sel = GetSelection ();
	386	if (sel > -1)
	387	return wxString(this->GetString (sel));
	388	else
	389	return wxEmptyString;
	390	}
	391
	392	bool wxChoice::SetStringSelection (const wxString& s)
	393	{
	394	int sel = FindString (s);
	395	if (sel > -1)
	396	{
	397	SetSelection (sel);
	398	return TRUE;
	399	}
	400	else
	401	return FALSE;
	402	}
	403
	404	void wxChoice::Command(wxCommandEvent & event)
	405	{
	406	SetSelection (event.GetInt());
	407	ProcessCommand (event);
	408	}
	409
	410	void wxChoiceCallback (Widget w, XtPointer clientData, XtPointer WXUNUSED(ptr))
	411	{
	412	wxChoice item = (wxChoice ) clientData;
	413	if (item)
	414	{
	415	if (item->InSetValue())
	416	return;
	417
	418	char *s = NULL;
	419	XtVaGetValues (w, XmNuserData, &s, NULL);
	420	if (s)
	421	{
	422	wxCommandEvent event (wxEVT_COMMAND_CHOICE_SELECTED, item->GetId());
	423	event.SetEventObject(item);
	424	event.m_commandInt = item->FindString (s);
	425	// event.m_commandString = s;
	426	item->ProcessCommand (event);
	427	}
	428	}
	429	}
	430
	431	void wxChoice::ChangeFont(bool keepOriginalSize)
	432	{
	433	// Note that this causes the widget to be resized back
	434	// to its original size! We therefore have to set the size
	435	// back again. TODO: a better way in Motif?
	436	if (m_windowFont.Ok())
	437	{
	438	int width, height, width1, height1;
	439	GetSize(& width, & height);
	440
	441	XmFontList fontList = (XmFontList) m_windowFont.GetFontList(1.0, XtDisplay((Widget) m_mainWidget));
	442	XtVaSetValues ((Widget) m_mainWidget, XmNfontList, fontList, NULL);
	443	XtVaSetValues ((Widget) m_buttonWidget, XmNfontList, fontList, NULL);
	444
	445	/* TODO: why does this cause a crash in XtWidgetToApplicationContext?
	446	int i;
	447	for (i = 0; i < m_noStrings; i++)
	448	XtVaSetValues ((Widget) m_widgetList[i], XmNfontList, fontList, NULL);
	449	*/
	450	GetSize(& width1, & height1);
	451	if (keepOriginalSize && (width != width1 \|\| height != height1))
	452	{
	453	SetSize(-1, -1, width, height);
	454	}
	455	}
	456	}
	457
	458	void wxChoice::ChangeBackgroundColour()
	459	{
	460	DoChangeBackgroundColour(m_formWidget, m_backgroundColour);
	461	DoChangeBackgroundColour(m_buttonWidget, m_backgroundColour);
	462	DoChangeBackgroundColour(m_menuWidget, m_backgroundColour);
	463	int i;
	464	for (i = 0; i < m_noStrings; i++)
	465	DoChangeBackgroundColour(m_widgetList[i], m_backgroundColour);
	466	}
	467
	468	void wxChoice::ChangeForegroundColour()
	469	{
	470	DoChangeForegroundColour(m_formWidget, m_foregroundColour);
	471	DoChangeForegroundColour(m_buttonWidget, m_foregroundColour);
	472	DoChangeForegroundColour(m_menuWidget, m_foregroundColour);
	473	int i;
	474	for (i = 0; i < m_noStrings; i++)
	475	DoChangeForegroundColour(m_widgetList[i], m_foregroundColour);
	476	}