src/msw/toplevel.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/toplevel.cpp
   3 // Purpose:     implements wxTopLevelWindow for MSW
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     24.09.01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2001 SciTech Software, Inc. (www.scitechsoft.com)
   9 // License:     wxWindows license
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "toplevel.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/app.h"
  33     #include "wx/toplevel.h"
  34     #include "wx/string.h"
  35     #include "wx/log.h"
  36     #include "wx/intl.h"
  37     #include "wx/frame.h"
  38 #endif //WX_PRECOMP
  39
  40 #include "wx/msw/private.h"
  41
  42 // ----------------------------------------------------------------------------
  43 // stubs for missing functions under MicroWindows
  44 // ----------------------------------------------------------------------------
  45
  46 #ifdef __WXMICROWIN__
  47
  48 static inline bool IsIconic(HWND WXUNUSED(hwnd)) { return FALSE; }
  49 static inline bool IsZoomed(HWND WXUNUSED(hwnd)) { return FALSE; }
  50
  51 #endif // __WXMICROWIN__
  52
  53 // ----------------------------------------------------------------------------
  54 // globals
  55 // ----------------------------------------------------------------------------
  56
  57 // list of all frames and modeless dialogs
  58 wxWindowList wxModelessWindows;
  59
  60 // the name of the default wxWindows class
  61 extern const wxChar *wxCanvasClassName;
  62
  63 // ============================================================================
  64 // wxTopLevelWindowMSW implementation
  65 // ============================================================================
  66
  67 // Dialog window proc
  68 LONG APIENTRY _EXPORT
  69 wxDlgProc(HWND WXUNUSED(hWnd), UINT message, WPARAM WXUNUSED(wParam), LPARAM WXUNUSED(lParam))
  70 {
  71     if ( message == WM_INITDIALOG )
  72     {
  73         // for this message, returning TRUE tells system to set focus to the
  74         // first control in the dialog box
  75         return TRUE;
  76     }
  77     else
  78     {
  79         // for all the other ones, FALSE means that we didn't process the
  80         // message
  81         return FALSE;
  82     }
  83 }
  84
  85 // ----------------------------------------------------------------------------
  86 // wxTopLevelWindowMSW creation
  87 // ----------------------------------------------------------------------------
  88
  89 void wxTopLevelWindowMSW::Init()
  90 {
  91     m_iconized =
  92     m_maximizeOnShow = FALSE;
  93
  94     // unlike (almost?) all other windows, frames are created hidden
  95     m_isShown = FALSE;
  96 }
  97
  98 long wxTopLevelWindowMSW::MSWGetCreateWindowFlags(long *exflags) const
  99 {
 100     long style = GetWindowStyle();
 101     long msflags = 0;
 102
 103     // first select the kind of window being created
 104     if ( style & wxCAPTION )
 105     {
 106         if ( style & wxFRAME_TOOL_WINDOW )
 107             msflags |= WS_POPUPWINDOW;
 108         else
 109             msflags |= WS_OVERLAPPED;
 110     }
 111     else
 112     {
 113         msflags |= WS_POPUP;
 114     }
 115
 116     // next translate the individual flags
 117     if ( style & wxMINIMIZE_BOX )
 118         msflags |= WS_MINIMIZEBOX;
 119     if ( style & wxMAXIMIZE_BOX )
 120         msflags |= WS_MAXIMIZEBOX;
 121     if ( style & wxTHICK_FRAME )
 122         msflags |= WS_THICKFRAME;
 123     if ( style & wxSYSTEM_MENU )
 124         msflags |= WS_SYSMENU;
 125     if ( style & wxMINIMIZE )
 126         msflags |= WS_MINIMIZE;
 127     if ( style & wxMAXIMIZE )
 128         msflags |= WS_MAXIMIZE;
 129     if ( style & wxCAPTION )
 130         msflags |= WS_CAPTION;
 131     if ( style & wxCLIP_CHILDREN )
 132         msflags |= WS_CLIPCHILDREN;
 133
 134     // Keep this here because it saves recoding this function in wxTinyFrame
 135 #if wxUSE_ITSY_BITSY && !defined(__WIN32__)
 136     if ( style & wxTINY_CAPTION_VERT )
 137         msflags |= IBS_VERTCAPTION;
 138     if ( style & wxTINY_CAPTION_HORIZ )
 139         msflags |= IBS_HORZCAPTION;
 140 #else
 141     if ( style & (wxTINY_CAPTION_VERT | wxTINY_CAPTION_HORIZ) )
 142         msflags |= WS_CAPTION;
 143 #endif
 144
 145     if ( exflags )
 146     {
 147         *exflags = MakeExtendedStyle(style);
 148
 149         // make all frames appear in the win9x shell taskbar unless
 150         // wxFRAME_TOOL_WINDOW or wxFRAME_NO_TASKBAR is given - without giving
 151         // them WS_EX_APPWINDOW style, the child (i.e. owned) frames wouldn't
 152         // appear in it
 153 #if !defined(__WIN16__) && !defined(__SC__)
 154         if ( (style & wxFRAME_TOOL_WINDOW) || (style & wxFRAME_NO_TASKBAR) )
 155             *exflags |= WS_EX_TOOLWINDOW;
 156         else if ( !(style & wxFRAME_NO_TASKBAR) )
 157             *exflags |= WS_EX_APPWINDOW;
 158 #endif
 159
 160         if ( style & wxSTAY_ON_TOP )
 161             *exflags |= WS_EX_TOPMOST;
 162
 163 #ifdef __WIN32__
 164       if ( m_exStyle & wxFRAME_EX_CONTEXTHELP )
 165         *exflags |= WS_EX_CONTEXTHELP;
 166 #endif // __WIN32__
 167     }
 168
 169     return msflags;
 170 }
 171
 172 bool wxTopLevelWindowMSW::CreateDialog(const wxChar *dlgTemplate,
 173                                        const wxString& title,
 174                                        const wxPoint& pos,
 175                                        const wxSize& size)
 176 {
 177 #ifdef __WXMICROWIN__
 178     // no dialogs support under MicroWin yet
 179     return CreateFrame(title, pos, size);
 180 #else // !__WXMICROWIN__
 181     wxWindow *parent = GetParent();
 182
 183     // for the dialogs without wxDIALOG_NO_PARENT style, use the top level
 184     // app window as parent - this avoids creating modal dialogs without
 185     // parent
 186     if ( !parent && !(GetWindowStyleFlag() & wxDIALOG_NO_PARENT) )
 187     {
 188         parent = wxTheApp->GetTopWindow();
 189     }
 190
 191     m_hWnd = (WXHWND)::CreateDialog(wxGetInstance(),
 192                                     dlgTemplate,
 193                                     parent ? GetHwndOf(parent) : NULL,
 194                                     (DLGPROC)wxDlgProc);
 195
 196     if ( !m_hWnd )
 197     {
 198         wxFAIL_MSG(_("Did you forget to include wx/msw/wx.rc in your resources?"));
 199
 200         wxLogSysError(_("Can't create dialog using template '%s'"), dlgTemplate);
 201
 202         return FALSE;
 203     }
 204
 205     long exflags;
 206     (void)MSWGetCreateWindowFlags(&exflags);
 207
 208     if ( exflags )
 209     {
 210         ::SetWindowLong(GetHwnd(), GWL_EXSTYLE, exflags);
 211         ::SetWindowPos(GetHwnd(), NULL, 0, 0, 0, 0,
 212                        SWP_NOSIZE |
 213                        SWP_NOMOVE |
 214                        SWP_NOZORDER |
 215                        SWP_NOACTIVATE);
 216     }
 217
 218 #if defined(__WIN95__)
 219     // For some reason, the system menu is activated when we use the
 220     // WS_EX_CONTEXTHELP style, so let's set a reasonable icon
 221     if ( exflags & WS_EX_CONTEXTHELP )
 222     {
 223         wxFrame *winTop = wxDynamicCast(wxTheApp->GetTopWindow(), wxFrame);
 224         if ( winTop )
 225         {
 226             wxIcon icon = winTop->GetIcon();
 227             if ( icon.Ok() )
 228             {
 229                 ::SendMessage(GetHwnd(), WM_SETICON,
 230                               (WPARAM)TRUE,
 231                               (LPARAM)GetHiconOf(icon));
 232             }
 233         }
 234     }
 235 #endif // __WIN95__
 236
 237     // move the dialog to its initial position without forcing repainting
 238     int x, y, w, h;
 239     if ( MSWGetCreateWindowCoords(pos, size, x, y, w, h) )
 240     {
 241         if ( !::MoveWindow(GetHwnd(), x, y, w, h, FALSE) )
 242         {
 243             wxLogLastError(wxT("MoveWindow"));
 244         }
 245     }
 246     //else: leave it at default position
 247
 248     if ( !title.empty() )
 249     {
 250         ::SetWindowText(GetHwnd(), title);
 251     }
 252
 253     SubclassWin(m_hWnd);
 254
 255     return TRUE;
 256 #endif // __WXMICROWIN__/!__WXMICROWIN__
 257 }
 258
 259 bool wxTopLevelWindowMSW::CreateFrame(const wxString& title,
 260                                       const wxPoint& pos,
 261                                       const wxSize& size)
 262 {
 263     long exflags;
 264     long flags = MSWGetCreateWindowFlags(&exflags);
 265
 266     return MSWCreate(wxCanvasClassName, title, pos, size, flags, exflags);
 267 }
 268
 269 bool wxTopLevelWindowMSW::Create(wxWindow *parent,
 270                                  wxWindowID id,
 271                                  const wxString& title,
 272                                  const wxPoint& pos,
 273                                  const wxSize& size,
 274                                  long style,
 275                                  const wxString& name)
 276 {
 277     // init our fields
 278     Init();
 279
 280     m_windowStyle = style;
 281
 282     SetName(name);
 283
 284     m_windowId = id == -1 ? NewControlId() : id;
 285
 286     wxTopLevelWindows.Append(this);
 287
 288     if ( parent )
 289         parent->AddChild(this);
 290
 291     if ( GetExtraStyle() & wxTOPLEVEL_EX_DIALOG )
 292     {
 293         // TODO: it would be better to construct the dialog template in memory
 294         //       during run-time than to rely on the limited number of
 295         //       templates in wx.rc because:
 296         //          a) you wouldn't have to include wx.rc in all wxWin programs
 297         //             (and the number of complaints about it would dtop)
 298         //          b) we'd be able to provide more templates simply, i.e.
 299         //             we could generate the templates for all style
 300         //             combinations
 301
 302         // we have different dialog templates to allows creation of dialogs
 303         // with & without captions under MSWindows, resizeable or not (but a
 304         // resizeable dialog always has caption - otherwise it would look too
 305         // strange)
 306         const wxChar *dlgTemplate;
 307         if ( style & wxRESIZE_BORDER )
 308             dlgTemplate = wxT("wxResizeableDialog");
 309         else if ( style & wxCAPTION )
 310             dlgTemplate = wxT("wxCaptionDialog");
 311         else
 312             dlgTemplate = wxT("wxNoCaptionDialog");
 313
 314         return CreateDialog(dlgTemplate, title, pos, size);
 315     }
 316     else // !dialog
 317     {
 318         return CreateFrame(title, pos, size);
 319     }
 320 }
 321
 322 wxTopLevelWindowMSW::~wxTopLevelWindowMSW()
 323 {
 324     wxTopLevelWindows.DeleteObject(this);
 325
 326     if ( wxModelessWindows.Find(this) )
 327         wxModelessWindows.DeleteObject(this);
 328
 329     // If this is the last top-level window, exit.
 330     if ( wxTheApp && (wxTopLevelWindows.Number() == 0) )
 331     {
 332         wxTheApp->SetTopWindow(NULL);
 333
 334         if ( wxTheApp->GetExitOnFrameDelete() )
 335         {
 336             ::PostQuitMessage(0);
 337         }
 338     }
 339 }
 340
 341 // ----------------------------------------------------------------------------
 342 // wxTopLevelWindowMSW geometry
 343 // ----------------------------------------------------------------------------
 344
 345 void wxTopLevelWindowMSW::DoSetClientSize(int width, int height)
 346 {
 347     HWND hWnd = GetHwnd();
 348
 349     RECT rectClient;
 350     ::GetClientRect(hWnd, &rectClient);
 351
 352     RECT rectTotal;
 353     ::GetWindowRect(hWnd, &rectTotal);
 354
 355     // Find the difference between the entire window (title bar and all)
 356     // and the client area; add this to the new client size to move the
 357     // window
 358     width += rectTotal.right - rectTotal.left - rectClient.right;
 359     height += rectTotal.bottom - rectTotal.top - rectClient.bottom;
 360
 361     // note that calling GetClientAreaOrigin() takes the toolbar into account
 362     wxPoint pt = GetClientAreaOrigin();
 363     width += pt.x;
 364     height += pt.y;
 365
 366     if ( !::MoveWindow(hWnd, rectTotal.left, rectTotal.top,
 367                        width, height, TRUE /* redraw */) )
 368     {
 369         wxLogLastError(_T("MoveWindow"));
 370     }
 371
 372     wxSizeEvent event(wxSize(width, height), m_windowId);
 373     event.SetEventObject(this);
 374     (void)GetEventHandler()->ProcessEvent(event);
 375 }
 376
 377 // ----------------------------------------------------------------------------
 378 // wxTopLevelWindowMSW showing
 379 // ----------------------------------------------------------------------------
 380
 381 void wxTopLevelWindowMSW::DoShowWindow(int nShowCmd)
 382 {
 383     ::ShowWindow(GetHwnd(), nShowCmd);
 384
 385     m_iconized = nShowCmd == SW_MINIMIZE;
 386 }
 387
 388 bool wxTopLevelWindowMSW::Show(bool show)
 389 {
 390     // don't use wxWindow version as we want to call DoShowWindow() ourselves
 391     if ( !wxWindowBase::Show(show) )
 392         return FALSE;
 393
 394     int nShowCmd;
 395     if ( show )
 396     {
 397         if ( m_maximizeOnShow )
 398         {
 399             // show and maximize
 400             nShowCmd = SW_MAXIMIZE;
 401
 402             m_maximizeOnShow = FALSE;
 403         }
 404         else // just show
 405         {
 406             nShowCmd = SW_SHOW;
 407         }
 408     }
 409     else // hide
 410     {
 411         nShowCmd = SW_HIDE;
 412     }
 413
 414     DoShowWindow(nShowCmd);
 415
 416     if ( show )
 417     {
 418         ::BringWindowToTop(GetHwnd());
 419
 420         wxActivateEvent event(wxEVT_ACTIVATE, TRUE, m_windowId);
 421         event.SetEventObject( this );
 422         GetEventHandler()->ProcessEvent(event);
 423     }
 424     else // hide
 425     {
 426         // Try to highlight the correct window (the parent)
 427         if ( GetParent() )
 428         {
 429             HWND hWndParent = GetHwndOf(GetParent());
 430             if (hWndParent)
 431                 ::BringWindowToTop(hWndParent);
 432         }
 433     }
 434
 435     return TRUE;
 436 }
 437
 438 // ----------------------------------------------------------------------------
 439 // wxTopLevelWindowMSW maximize/minimize
 440 // ----------------------------------------------------------------------------
 441
 442 void wxTopLevelWindowMSW::Maximize(bool maximize)
 443 {
 444     if ( IsShown() )
 445     {
 446         // just maximize it directly
 447         DoShowWindow(maximize ? SW_MAXIMIZE : SW_RESTORE);
 448     }
 449     else // hidden
 450     {
 451         // we can't maximize the hidden frame because it shows it as well, so
 452         // just remember that we should do it later in this case
 453         m_maximizeOnShow = TRUE;
 454     }
 455 }
 456
 457 bool wxTopLevelWindowMSW::IsMaximized() const
 458 {
 459     return ::IsZoomed(GetHwnd()) != 0;
 460 }
 461
 462 void wxTopLevelWindowMSW::Iconize(bool iconize)
 463 {
 464     DoShowWindow(iconize ? SW_MINIMIZE : SW_RESTORE);
 465 }
 466
 467 bool wxTopLevelWindowMSW::IsIconized() const
 468 {
 469     // also update the current state
 470     ((wxTopLevelWindowMSW *)this)->m_iconized = ::IsIconic(GetHwnd()) != 0;
 471
 472     return m_iconized;
 473 }
 474
 475 void wxTopLevelWindowMSW::Restore()
 476 {
 477     DoShowWindow(SW_RESTORE);
 478 }
 479
 480 // ----------------------------------------------------------------------------
 481 // wxTopLevelWindowMSW misc
 482 // ----------------------------------------------------------------------------
 483
 484 void wxTopLevelWindowMSW::SetIcon(const wxIcon& icon)
 485 {
 486     // this sets m_icon
 487     wxTopLevelWindowBase::SetIcon(icon);
 488
 489 #if defined(__WIN95__) && !defined(__WXMICROWIN__)
 490     if ( m_icon.Ok() )
 491     {
 492         ::SendMessage(GetHwnd(), WM_SETICON,
 493                       (WPARAM)TRUE, (LPARAM)GetHiconOf(m_icon));
 494     }
 495 #endif // __WIN95__
 496 }