src/motif/menu.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        menu.cpp
   3 // Purpose:     wxMenu, wxMenuBar, wxMenuItem
   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
  13 // ============================================================================
  14 // headers & declarations
  15 // ============================================================================
  16
  17 // wxWindows headers
  18 // -----------------
  19
  20 #ifdef __GNUG__
  21 #pragma implementation "menu.h"
  22 #pragma implementation "menuitem.h"
  23 #endif
  24
  25 #include "wx/menu.h"
  26 #include "wx/menuitem.h"
  27 #include "wx/log.h"
  28 #include "wx/utils.h"
  29 #include "wx/app.h"
  30 #include "wx/frame.h"
  31
  32 #include <Xm/Label.h>
  33 #include <Xm/LabelG.h>
  34 #include <Xm/CascadeBG.h>
  35 #include <Xm/CascadeB.h>
  36 #include <Xm/SeparatoG.h>
  37 #include <Xm/PushBG.h>
  38 #include <Xm/ToggleB.h>
  39 #include <Xm/ToggleBG.h>
  40 #include <Xm/RowColumn.h>
  41
  42 #include "wx/motif/private.h"
  43
  44 // other standard headers
  45 // ----------------------
  46 #include <string.h>
  47
  48 #if !USE_SHARED_LIBRARY
  49 IMPLEMENT_DYNAMIC_CLASS(wxMenu, wxEvtHandler)
  50 IMPLEMENT_DYNAMIC_CLASS(wxMenuBar, wxEvtHandler)
  51 #endif
  52
  53 // ============================================================================
  54 // implementation
  55 // ============================================================================
  56
  57 // Menus
  58
  59 // Construct a menu with optional title (then use append)
  60 wxMenu::wxMenu(const wxString& title, const wxFunction func)
  61 {
  62     m_title = title;
  63     m_parent = (wxEvtHandler*) NULL;
  64     m_eventHandler = this;
  65     m_noItems = 0;
  66     m_menuBar = NULL;
  67
  68     //// Motif-specific members
  69     m_numColumns = 1;
  70     m_menuWidget = (WXWidget) NULL;
  71     m_popupShell = (WXWidget) NULL;
  72     m_buttonWidget = (WXWidget) NULL;
  73     m_menuId = 0;
  74     m_topLevelMenu  = (wxMenu*) NULL;
  75     m_ownedByMenuBar = FALSE;
  76     m_menuParent = (wxMenu*) NULL;
  77
  78     if (m_title != "")
  79     {
  80         Append(ID_SEPARATOR, m_title) ;
  81         AppendSeparator() ;
  82     }
  83
  84     Callback(func);
  85 }
  86
  87 // The wxWindow destructor will take care of deleting the submenus.
  88 wxMenu::~wxMenu()
  89 {
  90     if (m_menuWidget)
  91     {
  92       if (m_menuParent)
  93         DestroyMenu(TRUE);
  94       else
  95         DestroyMenu(FALSE);
  96     }
  97
  98     // Not sure if this is right
  99     if (m_menuParent && m_menuBar)
 100     {
 101       m_menuParent = NULL;
 102       //      m_menuBar = NULL;
 103     }
 104
 105     wxNode *node = m_menuItems.First();
 106     while (node)
 107     {
 108         wxMenuItem *item = (wxMenuItem *)node->Data();
 109
 110         /*
 111         if (item->GetSubMenu())
 112             item->DeleteSubMenu();
 113         */
 114
 115         wxNode *next = node->Next();
 116         delete item;
 117         delete node;
 118         node = next;
 119     }
 120 }
 121
 122 void wxMenu::Break()
 123 {
 124     m_numColumns ++;
 125 }
 126
 127 // function appends a new item or submenu to the menu
 128 void wxMenu::Append(wxMenuItem *pItem)
 129 {
 130     wxCHECK_RET( pItem != NULL, "can't append NULL item to the menu" );
 131
 132     m_menuItems.Append(pItem);
 133
 134     if (m_menuWidget)
 135       pItem->CreateItem (m_menuWidget, m_menuBar, m_topLevelMenu);      // this is a dynamic Append
 136
 137     m_noItems++;
 138 }
 139
 140 void wxMenu::AppendSeparator()
 141 {
 142     Append(new wxMenuItem(this, ID_SEPARATOR));
 143 }
 144
 145 // Pullright item
 146 // N.B.: difference between old and new code.
 147 // Old code stores subMenu in 'children' for later deletion,
 148 // as well as in m_menuItems, whereas we only store it in
 149 // m_menuItems here. What implications does this have?
 150
 151 void wxMenu::Append(int id, const wxString& label, wxMenu *subMenu,
 152                     const wxString& helpString)
 153 {
 154     Append(new wxMenuItem(this, id, label, helpString, FALSE, subMenu));
 155
 156     subMenu->m_topLevelMenu = m_topLevelMenu;
 157 }
 158
 159 // Ordinary menu item
 160 void wxMenu::Append(int id, const wxString& label,
 161                     const wxString& helpString, bool checkable)
 162 {
 163   // 'checkable' parameter is useless for Windows.
 164     Append(new wxMenuItem(this, id, label, helpString, checkable));
 165 }
 166
 167 void wxMenu::Delete(int id)
 168 {
 169     wxNode *node;
 170     wxMenuItem *item;
 171     int pos;
 172
 173     for (pos = 0, node = m_menuItems.First(); node; node = node->Next(), pos++)
 174     {
 175          item = (wxMenuItem *)node->Data();
 176          if (item->GetId() == id)
 177                 break;
 178     }
 179
 180     if (!node)
 181         return;
 182
 183     item->DestroyItem(TRUE);
 184
 185     // See also old code - don't know if this is needed (seems redundant).
 186     /*
 187   if (item->GetSubMenu()) {
 188     item->subMenu->top_level_menu = item->GetSubMenu();
 189     item->subMenu->window_parent = NULL;
 190     children->DeleteObject(item->GetSubMenu());
 191   }
 192   */
 193
 194     m_menuItems.DeleteNode(node);
 195     delete item;
 196 }
 197
 198 void wxMenu::Enable(int id, bool flag)
 199 {
 200     wxMenuItem *item = FindItemForId(id);
 201     wxCHECK_RET( item != NULL, "can't enable non-existing menu item" );
 202
 203     item->Enable(flag);
 204 }
 205
 206 bool wxMenu::Enabled(int Id) const
 207 {
 208     wxMenuItem *item = FindItemForId(Id);
 209     wxCHECK( item != NULL, FALSE );
 210
 211     return item->IsEnabled();
 212 }
 213
 214 void wxMenu::Check(int Id, bool Flag)
 215 {
 216     wxMenuItem *item = FindItemForId(Id);
 217     wxCHECK_RET( item != NULL, "can't get status of non-existing menu item" );
 218
 219     item->Check(Flag);
 220 }
 221
 222 bool wxMenu::Checked(int id) const
 223 {
 224     wxMenuItem *item = FindItemForId(id);
 225     wxCHECK( item != NULL, FALSE );
 226
 227     return item->IsChecked();
 228 }
 229
 230 void wxMenu::SetTitle(const wxString& label)
 231 {
 232     m_title = label ;
 233
 234     wxNode *node = m_menuItems.First ();
 235     if (!node)
 236       return;
 237
 238     wxMenuItem *item = (wxMenuItem *) node->Data ();
 239     Widget widget = (Widget) item->GetButtonWidget();
 240     if (!widget)
 241       return;
 242
 243     XmString title_str = XmStringCreateSimple ((char*) (const char*) label);
 244     XtVaSetValues (widget,
 245                    XmNlabelString, title_str,
 246                    NULL);
 247     // TODO: should we delete title_str now?
 248 }
 249
 250 const wxString wxMenu::GetTitle() const
 251 {
 252     return m_title;
 253 }
 254
 255 void wxMenu::SetLabel(int id, const wxString& label)
 256 {
 257     wxMenuItem *item = FindItemForId(id);
 258     if (item == (wxMenuItem*) NULL)
 259       return;
 260
 261     item->SetLabel(label);
 262 }
 263
 264 wxString wxMenu::GetLabel(int id) const
 265 {
 266   wxMenuItem *it = NULL;
 267   WXWidget w = FindMenuItem (id, &it);
 268   if (w)
 269     {
 270       XmString text;
 271       char *s;
 272       XtVaGetValues ((Widget) w,
 273                      XmNlabelString, &text,
 274                      NULL);
 275
 276       if (XmStringGetLtoR (text, XmSTRING_DEFAULT_CHARSET, &s))
 277         {
 278           wxString str(s);
 279           XtFree (s);
 280           return str;
 281         }
 282       else
 283         {
 284           XmStringFree (text);
 285           return wxEmptyString;
 286         }
 287     }
 288   else
 289     return wxEmptyString;
 290 }
 291
 292 // Finds the item id matching the given string, -1 if not found.
 293 int wxMenu::FindItem (const wxString& itemString) const
 294 {
 295     char buf1[200];
 296     char buf2[200];
 297     wxStripMenuCodes ((char *)(const char *)itemString, buf1);
 298
 299     for (wxNode * node = m_menuItems.First (); node; node = node->Next ())
 300     {
 301       wxMenuItem *item = (wxMenuItem *) node->Data ();
 302       if (item->GetSubMenu())
 303       {
 304         int ans = item->GetSubMenu()->FindItem(itemString);
 305         if (ans > -1)
 306           return ans;
 307       }
 308       if ( !item->IsSeparator() )
 309       {
 310         wxStripMenuCodes((char *)item->GetName().c_str(), buf2);
 311         if (strcmp(buf1, buf2) == 0)
 312           return item->GetId();
 313       }
 314     }
 315
 316     return -1;
 317 }
 318
 319 wxMenuItem *wxMenu::FindItemForId(int itemId, wxMenu ** itemMenu) const
 320 {
 321     if (itemMenu)
 322         *itemMenu = NULL;
 323     for (wxNode * node = m_menuItems.First (); node; node = node->Next ())
 324     {
 325         wxMenuItem *item = (wxMenuItem *) node->Data ();
 326
 327         if (item->GetId() == itemId)
 328         {
 329             if (itemMenu)
 330                 *itemMenu = (wxMenu *) this;
 331             return item;
 332         }
 333
 334         if (item->GetSubMenu())
 335         {
 336             wxMenuItem *ans = item->GetSubMenu()->FindItemForId (itemId, itemMenu);
 337             if (ans)
 338                 return ans;
 339         }
 340     }
 341
 342     if (itemMenu)
 343         *itemMenu = NULL;
 344     return NULL;
 345 }
 346
 347 void wxMenu::SetHelpString(int itemId, const wxString& helpString)
 348 {
 349     wxMenuItem *item = FindItemForId (itemId);
 350     if (item)
 351         item->SetHelp(helpString);
 352 }
 353
 354 wxString wxMenu::GetHelpString (int itemId) const
 355 {
 356     wxMenuItem *item = FindItemForId (itemId);
 357     wxString str("");
 358     return (item == NULL) ? str : item->GetHelp();
 359 }
 360
 361 void wxMenu::ProcessCommand(wxCommandEvent & event)
 362 {
 363     bool processed = FALSE;
 364
 365     // Try a callback
 366     if (m_callback)
 367     {
 368             (void) (*(m_callback)) (*this, event);
 369             processed = TRUE;
 370     }
 371
 372     // Try the menu's event handler
 373     if ( !processed && GetEventHandler())
 374     {
 375             processed = GetEventHandler()->ProcessEvent(event);
 376     }
 377 /* TODO
 378     // Try the window the menu was popped up from (and up
 379     // through the hierarchy)
 380     if ( !processed && GetInvokingWindow())
 381         processed = GetInvokingWindow()->ProcessEvent(event);
 382 */
 383 }
 384
 385 bool wxWindow::PopupMenu(wxMenu *menu, int x, int y)
 386 {
 387   Widget widget = (Widget) GetMainWidget();
 388
 389   /* The menuId field seems to be usused, so we'll use it to
 390      indicate whether a menu is popped up or not:
 391         0: Not currently created as a popup
 392        -1: Created as a popup, but not active
 393         1: Active popup.
 394    */
 395
 396   if (menu->GetParent() && (menu->GetId() != -1))
 397     return FALSE;
 398
 399   if (menu->GetMainWidget()) {
 400     menu->DestroyMenu(TRUE);
 401   }
 402
 403   wxWindow *parent = this;
 404
 405   menu->SetId(1); /* Mark as popped-up */
 406   menu->CreateMenu(NULL, widget, menu);
 407   //  menu->SetParent(parent);
 408   //  parent->children->Append(menu);  // Store menu for later deletion
 409
 410   Widget menuWidget = (Widget) menu->GetMainWidget();
 411
 412   int rootX = 0;
 413   int rootY = 0;
 414
 415   int deviceX = x;
 416   int deviceY = y;
 417   /*
 418   if (this->IsKindOf(CLASSINFO(wxCanvas)))
 419   {
 420     wxCanvas *canvas = (wxCanvas *) this;
 421     deviceX = canvas->GetDC ()->LogicalToDeviceX (x);
 422     deviceY = canvas->GetDC ()->LogicalToDeviceY (y);
 423   }
 424   */
 425
 426   Display *display = XtDisplay (widget);
 427   Window rootWindow = RootWindowOfScreen (XtScreen((Widget)widget));
 428   Window thisWindow = XtWindow (widget);
 429   Window childWindow;
 430   XTranslateCoordinates (display, thisWindow, rootWindow, (int) deviceX, (int) deviceY,
 431                          &rootX, &rootY, &childWindow);
 432
 433   XButtonPressedEvent event;
 434   event.type = ButtonPress;
 435   event.button = 1;
 436
 437   event.x = deviceX;
 438   event.y = deviceY;
 439
 440   event.x_root = rootX;
 441   event.y_root = rootY;
 442
 443   XmMenuPosition (menuWidget, &event);
 444   XtManageChild (menuWidget);
 445
 446   return TRUE;
 447 }
 448
 449 // Menu Bar
 450 wxMenuBar::wxMenuBar()
 451 {
 452     m_eventHandler = this;
 453     m_menuCount = 0;
 454     m_menus = NULL;
 455     m_titles = NULL;
 456     m_menuBarFrame = NULL;
 457 }
 458
 459 wxMenuBar::wxMenuBar(int n, wxMenu *menus[], const wxString titles[])
 460 {
 461     m_eventHandler = this;
 462     m_menuCount = n;
 463     m_menus = menus;
 464     m_titles = new wxString[n];
 465     int i;
 466     for ( i = 0; i < n; i++ )
 467         m_titles[i] = titles[i];
 468     m_menuBarFrame = NULL;
 469 }
 470
 471 wxMenuBar::~wxMenuBar()
 472 {
 473     int i;
 474     for (i = 0; i < m_menuCount; i++)
 475     {
 476         delete m_menus[i];
 477     }
 478     delete[] m_menus;
 479     delete[] m_titles;
 480 }
 481
 482 // Must only be used AFTER menu has been attached to frame,
 483 // otherwise use individual menus to enable/disable items
 484 void wxMenuBar::Enable(int id, bool flag)
 485 {
 486     wxMenu *itemMenu = NULL;
 487     wxMenuItem *item = FindItemForId(id, &itemMenu) ;
 488     if (!item)
 489         return;
 490     item->Enable(flag);
 491 }
 492
 493 void wxMenuBar::EnableTop(int pos, bool flag)
 494 {
 495     // TODO
 496 }
 497
 498 // Must only be used AFTER menu has been attached to frame,
 499 // otherwise use individual menus
 500 void wxMenuBar::Check(int id, bool flag)
 501 {
 502     wxMenu *itemMenu = NULL;
 503     wxMenuItem *item = FindItemForId(id, &itemMenu) ;
 504     if (!item)
 505         return;
 506
 507     if (!item->IsCheckable())
 508         return ;
 509
 510     item->Check(flag);
 511 }
 512
 513 bool wxMenuBar::Checked(int id) const
 514 {
 515     wxMenu *itemMenu = NULL;
 516     wxMenuItem *item = FindItemForId(id, &itemMenu) ;
 517     if (!item)
 518         return FALSE;
 519
 520     return item->IsChecked();
 521 }
 522
 523 bool wxMenuBar::Enabled(int id) const
 524 {
 525     wxMenu *itemMenu = NULL;
 526     wxMenuItem *item = FindItemForId(id, &itemMenu) ;
 527     if (!item)
 528         return FALSE;
 529
 530     return item->IsEnabled();
 531 }
 532
 533 void wxMenuBar::SetLabel(int id, const wxString& label)
 534 {
 535     wxMenu *itemMenu = NULL;
 536     wxMenuItem *item = FindItemForId(id, &itemMenu) ;
 537
 538     if (!item)
 539         return;
 540
 541     item->SetLabel(label);
 542 }
 543
 544 wxString wxMenuBar::GetLabel(int id) const
 545 {
 546     wxMenu *itemMenu = NULL;
 547     wxMenuItem *item = FindItemForId(id, &itemMenu) ;
 548
 549     if (!item)
 550         return wxString("");
 551
 552     return item->GetLabel();
 553 }
 554
 555 void wxMenuBar::SetLabelTop(int pos, const wxString& label)
 556 {
 557   wxASSERT( (pos < m_menuCount) );
 558
 559   Widget w = (Widget) m_menus[pos]->GetButtonWidget();
 560   if (w)
 561     {
 562       XmString label_str = XmStringCreateSimple ((char*) (const char*) label);
 563       XtVaSetValues (w,
 564                      XmNlabelString, label_str,
 565                      NULL);
 566       XmStringFree (label_str);
 567     }
 568 }
 569
 570 wxString wxMenuBar::GetLabelTop(int pos) const
 571 {
 572   wxASSERT( (pos < m_menuCount) );
 573
 574   Widget w = (Widget) m_menus[pos]->GetButtonWidget();
 575   if (w)
 576     {
 577       XmString text;
 578       char *s;
 579       XtVaGetValues (w,
 580                      XmNlabelString, &text,
 581                      NULL);
 582
 583       if (XmStringGetLtoR (text, XmSTRING_DEFAULT_CHARSET, &s))
 584         {
 585           wxString str(s);
 586           XtFree (s);
 587           return str;
 588         }
 589       else
 590         {
 591           return wxEmptyString;
 592         }
 593     }
 594   else
 595     return wxEmptyString;
 596
 597 }
 598
 599 bool wxMenuBar::OnDelete(wxMenu *menu, int pos)
 600 {
 601     // Only applies to dynamic deletion (when set in frame)
 602     if (!m_menuBarFrame)
 603         return TRUE;
 604
 605     menu->DestroyMenu(TRUE);
 606     return TRUE;
 607 }
 608
 609 bool wxMenuBar::OnAppend(wxMenu *menu, const char *title)
 610 {
 611     // Only applies to dynamic append (when set in frame)
 612     if (!m_menuBarFrame)
 613         return TRUE;
 614
 615     // Probably should be an assert here
 616     if (menu->GetParent())
 617         return FALSE;
 618
 619     // Has already been appended
 620     if (menu->GetButtonWidget())
 621         return FALSE;
 622
 623     WXWidget w = menu->CreateMenu(this, GetMainWidget(), menu, title, TRUE);
 624     menu->SetButtonWidget(w);
 625
 626     return TRUE;
 627 }
 628
 629 void wxMenuBar::Append (wxMenu * menu, const wxString& title)
 630 {
 631     if (!OnAppend(menu, title))
 632         return;
 633
 634     m_menuCount ++;
 635     wxMenu **new_menus = new wxMenu *[m_menuCount];
 636     wxString *new_titles = new wxString[m_menuCount];
 637     int i;
 638
 639     for (i = 0; i < m_menuCount - 1; i++)
 640         {
 641         new_menus[i] = m_menus[i];
 642         m_menus[i] = NULL;
 643         new_titles[i] = m_titles[i];
 644         m_titles[i] = "";
 645     }
 646     if (m_menus)
 647     {
 648         delete[]m_menus;
 649         delete[]m_titles;
 650     }
 651     m_menus = new_menus;
 652     m_titles = new_titles;
 653
 654     m_menus[m_menuCount - 1] = (wxMenu *)menu;
 655     m_titles[m_menuCount - 1] = title;
 656
 657     menu->SetMenuBar(this);
 658     menu->SetParent(this);
 659 }
 660
 661 void wxMenuBar::Delete(wxMenu * menu, int i)
 662 {
 663     int j;
 664     int ii = (int) i;
 665
 666     if (menu != 0)
 667     {
 668             for (ii = 0; ii < m_menuCount; ii++)
 669         {
 670             if (m_menus[ii] == menu)
 671             break;
 672             }
 673         if (ii >= m_menuCount)
 674             return;
 675     } else
 676     {
 677         if (ii < 0 || ii >= m_menuCount)
 678             return;
 679         menu = m_menus[ii];
 680     }
 681
 682     if (!OnDelete(menu, ii))
 683         return;
 684
 685     menu->SetParent((wxEvtHandler*) NULL);
 686
 687     -- m_menuCount;
 688     for (j = ii; j < m_menuCount; j++)
 689     {
 690         m_menus[j] = m_menus[j + 1];
 691         m_titles[j] = m_titles[j + 1];
 692     }
 693 }
 694
 695 // Find the menu menuString, item itemString, and return the item id.
 696 // Returns -1 if none found.
 697 int wxMenuBar::FindMenuItem (const wxString& menuString, const wxString& itemString) const
 698 {
 699     char buf1[200];
 700     char buf2[200];
 701     wxStripMenuCodes ((char *)(const char *)menuString, buf1);
 702     int i;
 703     for (i = 0; i < m_menuCount; i++)
 704     {
 705         wxStripMenuCodes ((char *)(const char *)m_titles[i], buf2);
 706         if (strcmp (buf1, buf2) == 0)
 707             return m_menus[i]->FindItem (itemString);
 708     }
 709     return -1;
 710 }
 711
 712 wxMenuItem *wxMenuBar::FindItemForId (int id, wxMenu ** itemMenu) const
 713 {
 714     if (itemMenu)
 715         *itemMenu = NULL;
 716
 717     wxMenuItem *item = NULL;
 718     int i;
 719     for (i = 0; i < m_menuCount; i++)
 720         if ((item = m_menus[i]->FindItemForId (id, itemMenu)))
 721             return item;
 722     return NULL;
 723 }
 724
 725 void wxMenuBar::SetHelpString (int id, const wxString& helpString)
 726 {
 727     int i;
 728     for (i = 0; i < m_menuCount; i++)
 729     {
 730         if (m_menus[i]->FindItemForId (id))
 731         {
 732             m_menus[i]->SetHelpString (id, helpString);
 733             return;
 734         }
 735     }
 736 }
 737
 738 wxString wxMenuBar::GetHelpString (int id) const
 739 {
 740     int i;
 741     for (i = 0; i < m_menuCount; i++)
 742     {
 743         if (m_menus[i]->FindItemForId (id))
 744             return wxString(m_menus[i]->GetHelpString (id));
 745     }
 746     return wxString("");
 747 }
 748
 749 //// Motif-specific
 750
 751 extern wxApp *wxTheApp;
 752 static XtWorkProcId WorkProcMenuId;
 753
 754 /* Since PopupMenu under Motif stills grab right mouse button events
 755  * after it was closed, we need to delete the associated widgets to
 756  * allow next PopUpMenu to appear...
 757  */
 758
 759 int PostDeletionOfMenu( XtPointer* clientData )
 760 {
 761   XtRemoveWorkProc(WorkProcMenuId);
 762   wxMenu *menu = (wxMenu *)clientData;
 763
 764   if (menu->GetMainWidget()) {
 765     wxList& list = menu->GetParent()->GetItems();
 766     list.DeleteObject(menu);
 767     menu->DestroyMenu(TRUE);
 768   }
 769   /* Mark as no longer popped up */
 770   menu->m_menuId = -1;
 771   return TRUE;
 772 }
 773
 774 void
 775 wxMenuPopdownCallback(Widget w, XtPointer clientData,
 776                       XtPointer ptr)
 777 {
 778   wxMenu *menu = (wxMenu *)clientData;
 779
 780   // Added by JOREL Jean-Charles <jjorel@silr.ireste.fr>
 781   /* Since Callbacks of MenuItems are not yet processed, we put a
 782    * background job which will be done when system will be idle.
 783    * What awful hack!! :(
 784    */
 785
 786   WorkProcMenuId = XtAppAddWorkProc(
 787                 (XtAppContext) wxTheApp->GetAppContext(),
 788                 (XtWorkProc) PostDeletionOfMenu,
 789                 (XtPointer) menu );
 790   // Apparently not found in Motif headers
 791   //  XtVaSetValues( w, XmNpopupEnabled, XmPOPUP_DISABLED, NULL );
 792 }
 793
 794 /*
 795  * Create a popup or pulldown menu.
 796  * Submenus of a popup will be pulldown.
 797  *
 798  */
 799
 800 WXWidget wxMenu::CreateMenu (wxMenuBar * menuBar, WXWidget parent, wxMenu * topMenu, const wxString& title, bool pullDown)
 801 {
 802   Widget menu = (Widget) 0;
 803   Widget buttonWidget = (Widget) 0;
 804   Arg args[5];
 805   XtSetArg (args[0], XmNnumColumns, m_numColumns);
 806   XtSetArg (args[1], XmNpacking, XmPACK_COLUMN);
 807
 808   if (!pullDown)
 809     {
 810       menu = XmCreatePopupMenu ((Widget) parent, "popup", args, 2);
 811       XtAddCallback(menu,
 812                     XmNunmapCallback,
 813                     (XtCallbackProc)wxMenuPopdownCallback,
 814                     (XtPointer)this);
 815     }
 816   else
 817     {
 818       char mnem = wxFindMnemonic (title);
 819       wxStripMenuCodes ((char*) (const char*) title, wxBuffer);
 820
 821       menu = XmCreatePulldownMenu ((Widget) parent, "pulldown", args, 2);
 822
 823       XmString label_str = XmStringCreateSimple (wxBuffer);
 824       buttonWidget = XtVaCreateManagedWidget (wxBuffer,
 825 #if wxUSE_GADGETS
 826                                          xmCascadeButtonGadgetClass, (Widget) parent,
 827 #else
 828                                          xmCascadeButtonWidgetClass, (Widget) parent,
 829 #endif
 830                                               XmNlabelString, label_str,
 831                                               XmNsubMenuId, menu,
 832                                               NULL);
 833
 834       if (mnem != 0)
 835         XtVaSetValues (buttonWidget, XmNmnemonic, mnem, NULL);
 836
 837       XmStringFree (label_str);
 838     }
 839
 840   m_menuWidget = (WXWidget) menu;
 841
 842   m_menuBar = menuBar;
 843   m_topLevelMenu = topMenu;
 844
 845   for (wxNode * node = m_menuItems.First (); node; node = node->Next ())
 846     {
 847       wxMenuItem *item = (wxMenuItem *) node->Data ();
 848       item->CreateItem (menu, menuBar, topMenu);
 849     }
 850
 851   return buttonWidget;
 852 }
 853
 854 // Destroys the Motif implementation of the menu,
 855 // but maintains the wxWindows data structures so we can
 856 // do a CreateMenu again.
 857 void wxMenu::DestroyMenu (bool full)
 858 {
 859   for (wxNode * node = m_menuItems.First (); node; node = node->Next ())
 860     {
 861       wxMenuItem *item = (wxMenuItem *) node->Data ();
 862       item->SetMenuBar((wxMenuBar*) NULL);
 863
 864       item->DestroyItem(full);
 865     }                           // for()
 866
 867   if (m_buttonWidget)
 868     {
 869       if (full)
 870       {
 871         XtVaSetValues((Widget) m_buttonWidget, XmNsubMenuId, NULL, NULL);
 872         XtDestroyWidget ((Widget) m_buttonWidget);
 873         m_buttonWidget = (WXWidget) 0;
 874       }
 875     }
 876   if (m_menuWidget && full)
 877     {
 878       XtDestroyWidget((Widget) m_menuWidget);
 879       m_menuWidget = (WXWidget) NULL;
 880     }
 881 }
 882
 883 WXWidget wxMenu::FindMenuItem (int id, wxMenuItem ** it) const
 884 {
 885   if (id == m_menuId)
 886     {
 887       if (it)
 888         *it = (wxMenuItem*) NULL;
 889       return m_buttonWidget;
 890     }
 891
 892   for (wxNode * node = m_menuItems.First (); node; node = node->Next ())
 893     {
 894       wxMenuItem *item = (wxMenuItem *) node->Data ();
 895       if (item->GetId() == id)
 896         {
 897           if (it)
 898             *it = item;
 899           return item->GetButtonWidget();
 900         }
 901
 902       if (item->GetSubMenu())
 903         {
 904           WXWidget w = item->GetSubMenu()->FindMenuItem (id, it);
 905           if (w)
 906             {
 907               return w;
 908             }
 909         }
 910     }                           // for()
 911
 912   if (it)
 913     *it = (wxMenuItem*) NULL;
 914   return (WXWidget) NULL;
 915 }