include/wx/msw/private.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/msw/private.h
   3 // Purpose:     Private declarations: as this header is only included by
   4 //              wxWidgets itself, it may contain identifiers which don't start
   5 //              with "wx".
   6 // Author:      Julian Smart
   7 // Modified by:
   8 // Created:     01/02/97
   9 // RCS-ID:      $Id$
  10 // Copyright:   (c) Julian Smart
  11 // Licence:     wxWindows licence
  12 /////////////////////////////////////////////////////////////////////////////
  13
  14 #ifndef _WX_PRIVATE_H_
  15 #define _WX_PRIVATE_H_
  16
  17 #include "wx/msw/wrapwin.h"
  18
  19 #ifdef __WXMICROWIN__
  20     // Extra prototypes and symbols not defined by MicroWindows
  21     #include "wx/msw/microwin.h"
  22 #endif
  23
  24 #include "wx/log.h"
  25
  26 #if wxUSE_GUI
  27     #include "wx/window.h"
  28 #endif // wxUSE_GUI
  29
  30 class WXDLLIMPEXP_FWD_CORE wxFont;
  31 class WXDLLIMPEXP_FWD_CORE wxWindow;
  32 class WXDLLIMPEXP_FWD_CORE wxWindowBase;
  33
  34 // ---------------------------------------------------------------------------
  35 // private constants
  36 // ---------------------------------------------------------------------------
  37
  38 // 260 was taken from windef.h
  39 #ifndef MAX_PATH
  40     #define MAX_PATH  260
  41 #endif
  42
  43 // ---------------------------------------------------------------------------
  44 // standard icons from the resources
  45 // ---------------------------------------------------------------------------
  46
  47 #if wxUSE_GUI
  48
  49 extern WXDLLIMPEXP_DATA_CORE(HICON) wxSTD_FRAME_ICON;
  50 extern WXDLLIMPEXP_DATA_CORE(HICON) wxSTD_MDIPARENTFRAME_ICON;
  51 extern WXDLLIMPEXP_DATA_CORE(HICON) wxSTD_MDICHILDFRAME_ICON;
  52 extern WXDLLIMPEXP_DATA_CORE(HICON) wxDEFAULT_FRAME_ICON;
  53 extern WXDLLIMPEXP_DATA_CORE(HICON) wxDEFAULT_MDIPARENTFRAME_ICON;
  54 extern WXDLLIMPEXP_DATA_CORE(HICON) wxDEFAULT_MDICHILDFRAME_ICON;
  55 extern WXDLLIMPEXP_DATA_CORE(HFONT) wxSTATUS_LINE_FONT;
  56
  57 #endif // wxUSE_GUI
  58
  59 // ---------------------------------------------------------------------------
  60 // global data
  61 // ---------------------------------------------------------------------------
  62
  63 extern WXDLLIMPEXP_DATA_BASE(HINSTANCE) wxhInstance;
  64
  65 // ---------------------------------------------------------------------------
  66 // define things missing from some compilers' headers
  67 // ---------------------------------------------------------------------------
  68
  69 #if defined(__WXWINCE__) || (defined(__GNUWIN32__) && !wxUSE_NORLANDER_HEADERS)
  70 #ifndef ZeroMemory
  71     inline void ZeroMemory(void *buf, size_t len) { memset(buf, 0, len); }
  72 #endif
  73 #endif // old mingw32
  74
  75 // this defines a CASTWNDPROC macro which casts a pointer to the type of a
  76 // window proc
  77 #if defined(STRICT) || defined(__GNUC__)
  78     typedef WNDPROC WndProcCast;
  79 #else
  80     typedef FARPROC WndProcCast;
  81 #endif
  82
  83
  84 #define CASTWNDPROC (WndProcCast)
  85
  86
  87
  88 // ---------------------------------------------------------------------------
  89 // some stuff for old Windows versions (FIXME: what does it do here??)
  90 // ---------------------------------------------------------------------------
  91
  92 #if !defined(APIENTRY)  // NT defines APIENTRY, 3.x not
  93     #define APIENTRY FAR PASCAL
  94 #endif
  95
  96 #ifdef __WIN32__
  97     #define _EXPORT
  98 #else
  99     #define _EXPORT _export
 100 #endif
 101
 102 #ifndef __WIN32__
 103     typedef signed short int SHORT;
 104 #endif
 105
 106 #if !defined(__WIN32__)  // 3.x uses FARPROC for dialogs
 107 #ifndef STRICT
 108     #define DLGPROC FARPROC
 109 #endif
 110 #endif
 111
 112 /*
 113  * Decide what window classes we're going to use
 114  * for this combination of CTl3D/FAFA settings
 115  */
 116
 117 #define STATIC_CLASS     wxT("STATIC")
 118 #define STATIC_FLAGS     (SS_LEFT|WS_CHILD|WS_VISIBLE)
 119 #define CHECK_CLASS      wxT("BUTTON")
 120 #define CHECK_FLAGS      (BS_AUTOCHECKBOX|WS_TABSTOP|WS_CHILD)
 121 #define CHECK_IS_FAFA    FALSE
 122 #define RADIO_CLASS      wxT("BUTTON")
 123 #define RADIO_FLAGS      (BS_AUTORADIOBUTTON|WS_CHILD|WS_VISIBLE)
 124 #define RADIO_SIZE       20
 125 #define RADIO_IS_FAFA    FALSE
 126 #define PURE_WINDOWS
 127 #define GROUP_CLASS      wxT("BUTTON")
 128 #define GROUP_FLAGS      (BS_GROUPBOX|WS_CHILD|WS_VISIBLE)
 129
 130 /*
 131 #define BITCHECK_FLAGS   (FB_BITMAP|FC_BUTTONDRAW|FC_DEFAULT|WS_VISIBLE)
 132 #define BITRADIO_FLAGS   (FC_BUTTONDRAW|FB_BITMAP|FC_RADIO|WS_CHILD|WS_VISIBLE)
 133 */
 134
 135 // ---------------------------------------------------------------------------
 136 // misc macros
 137 // ---------------------------------------------------------------------------
 138
 139 #define MEANING_CHARACTER '0'
 140 #define DEFAULT_ITEM_WIDTH  100
 141 #define DEFAULT_ITEM_HEIGHT 80
 142
 143 // Scale font to get edit control height
 144 //#define EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)    (3*(cy)/2)
 145 #define EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)    (cy+8)
 146
 147 // Generic subclass proc, for panel item moving/sizing and intercept
 148 // EDIT control VK_RETURN messages
 149 extern LONG APIENTRY _EXPORT
 150   wxSubclassedGenericControlProc(WXHWND hWnd, WXUINT message, WXWPARAM wParam, WXLPARAM lParam);
 151
 152 // ---------------------------------------------------------------------------
 153 // useful macros and functions
 154 // ---------------------------------------------------------------------------
 155
 156 // a wrapper macro for ZeroMemory()
 157 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
 158 #define wxZeroMemory(obj)   ::ZeroMemory(&obj, sizeof(obj))
 159 #else
 160 #define wxZeroMemory(obj)   memset((void*) & obj, 0, sizeof(obj))
 161 #endif
 162
 163 // This one is a macro so that it can be tested with #ifdef, it will be
 164 // undefined if it cannot be implemented for a given compiler.
 165 // Vc++, bcc, dmc, ow, mingw, codewarrior (and rsxnt) have _get_osfhandle.
 166 // Cygwin has get_osfhandle. Others are currently unknown, e.g. Salford,
 167 // Intel, Visual Age.
 168 #if defined(__WXWINCE__)
 169     #define wxGetOSFHandle(fd) ((HANDLE)fd)
 170     #define wxOpenOSFHandle(h, flags) ((int)wxPtrToUInt(h))
 171 #elif defined(__CYGWIN__)
 172     #define wxGetOSFHandle(fd) ((HANDLE)get_osfhandle(fd))
 173 #elif defined(__VISUALC__) \
 174    || defined(__BORLANDC__) \
 175    || defined(__DMC__) \
 176    || defined(__WATCOMC__) \
 177    || defined(__MINGW32__) \
 178    || (defined(__MWERKS__) && defined(__MSL__))
 179     #define wxGetOSFHandle(fd) ((HANDLE)_get_osfhandle(fd))
 180     #define wxOpenOSFHandle(h, flags) (_open_osfhandle(wxPtrToUInt(h), flags))
 181     #define wx_fdopen _fdopen
 182 #endif
 183
 184 // close the handle in the class dtor
 185 class AutoHANDLE
 186 {
 187 public:
 188     wxEXPLICIT AutoHANDLE(HANDLE handle) : m_handle(handle) { }
 189
 190     bool IsOk() const { return m_handle != INVALID_HANDLE_VALUE; }
 191     operator HANDLE() const { return m_handle; }
 192
 193     ~AutoHANDLE() { if ( IsOk() ) ::CloseHandle(m_handle); }
 194
 195 protected:
 196     HANDLE m_handle;
 197 };
 198
 199 // a template to make initializing Windows styructs less painful: it zeroes all
 200 // the struct fields and also sets cbSize member to the correct value (and so
 201 // can be only used with structures which have this member...)
 202 template <class T>
 203 struct WinStruct : public T
 204 {
 205     WinStruct()
 206     {
 207         ::ZeroMemory(this, sizeof(T));
 208
 209         // explicit qualification is required here for this to be valid C++
 210         this->cbSize = sizeof(T);
 211     }
 212 };
 213
 214
 215 #if wxUSE_GUI
 216
 217 #include "wx/gdicmn.h"
 218 #include "wx/colour.h"
 219
 220 // make conversion from wxColour and COLORREF a bit less painful
 221 inline COLORREF wxColourToRGB(const wxColour& c)
 222 {
 223     return RGB(c.Red(), c.Green(), c.Blue());
 224 }
 225
 226 inline COLORREF wxColourToPalRGB(const wxColour& c)
 227 {
 228     return PALETTERGB(c.Red(), c.Green(), c.Blue());
 229 }
 230
 231 inline wxColour wxRGBToColour(COLORREF rgb)
 232 {
 233     return wxColour(GetRValue(rgb), GetGValue(rgb), GetBValue(rgb));
 234 }
 235
 236 inline void wxRGBToColour(wxColour& c, COLORREF rgb)
 237 {
 238     c.Set(GetRValue(rgb), GetGValue(rgb), GetBValue(rgb));
 239 }
 240
 241 // get the standard colour map for some standard colours - see comment in this
 242 // function to understand why is it needed and when should it be used
 243 //
 244 // it returns a wxCOLORMAP (can't use COLORMAP itself here as comctl32.dll
 245 // might be not included/available) array of size wxSTD_COLOUR_MAX
 246 //
 247 // NB: if you change these colours, update wxBITMAP_STD_COLOURS in the
 248 //     resources as well: it must have the same number of pixels!
 249 enum wxSTD_COLOUR
 250 {
 251     wxSTD_COL_BTNTEXT,
 252     wxSTD_COL_BTNSHADOW,
 253     wxSTD_COL_BTNFACE,
 254     wxSTD_COL_BTNHIGHLIGHT,
 255     wxSTD_COL_MAX
 256 };
 257
 258 struct WXDLLIMPEXP_CORE wxCOLORMAP
 259 {
 260     COLORREF from, to;
 261 };
 262
 263 // this function is implemented in src/msw/window.cpp
 264 extern wxCOLORMAP *wxGetStdColourMap();
 265
 266 // create a wxRect from Windows RECT
 267 inline wxRect wxRectFromRECT(const RECT& rc)
 268 {
 269     return wxRect(rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top);
 270 }
 271
 272 // copy Windows RECT to our wxRect
 273 inline void wxCopyRECTToRect(const RECT& rc, wxRect& rect)
 274 {
 275     rect = wxRectFromRECT(rc);
 276 }
 277
 278 // and vice versa
 279 inline void wxCopyRectToRECT(const wxRect& rect, RECT& rc)
 280 {
 281     // note that we don't use wxRect::GetRight() as it is one of compared to
 282     // wxRectFromRECT() above
 283     rc.top = rect.y;
 284     rc.left = rect.x;
 285     rc.right = rect.x + rect.width;
 286     rc.bottom = rect.y + rect.height;
 287 }
 288
 289 // translations between HIMETRIC units (which OLE likes) and pixels (which are
 290 // liked by all the others) - implemented in msw/utilsexc.cpp
 291 extern void HIMETRICToPixel(LONG *x, LONG *y);
 292 extern void HIMETRICToPixel(LONG *x, LONG *y, HDC hdcRef);
 293 extern void PixelToHIMETRIC(LONG *x, LONG *y);
 294 extern void PixelToHIMETRIC(LONG *x, LONG *y, HDC hdcRef);
 295
 296 // Windows convention of the mask is opposed to the wxWidgets one, so we need
 297 // to invert the mask each time we pass one/get one to/from Windows
 298 extern HBITMAP wxInvertMask(HBITMAP hbmpMask, int w = 0, int h = 0);
 299
 300 // Creates an icon or cursor depending from a bitmap
 301 //
 302 // The bitmap must be valid and it should have a mask. If it doesn't, a default
 303 // mask is created using light grey as the transparent colour.
 304 extern HICON wxBitmapToHICON(const wxBitmap& bmp);
 305
 306 // Same requirments as above apply and the bitmap must also have the correct
 307 // size.
 308 extern
 309 HCURSOR wxBitmapToHCURSOR(const wxBitmap& bmp, int hotSpotX, int hotSpotY);
 310
 311
 312 #if wxUSE_OWNER_DRAWN
 313
 314 // Draw the bitmap in specified state (this is used by owner drawn controls)
 315 enum wxDSBStates
 316 {
 317     wxDSB_NORMAL = 0,
 318     wxDSB_SELECTED,
 319     wxDSB_DISABLED
 320 };
 321
 322 extern
 323 BOOL wxDrawStateBitmap(HDC hDC, HBITMAP hBitmap, int x, int y, UINT uState);
 324
 325 #endif // wxUSE_OWNER_DRAWN
 326
 327 // get (x, y) from DWORD - notice that HI/LOWORD can *not* be used because they
 328 // will fail on system with multiple monitors where the coords may be negative
 329 //
 330 // these macros are standard now (Win98) but some older headers don't have them
 331 #ifndef GET_X_LPARAM
 332     #define GET_X_LPARAM(lp) ((int)(short)LOWORD(lp))
 333     #define GET_Y_LPARAM(lp) ((int)(short)HIWORD(lp))
 334 #endif // GET_X_LPARAM
 335
 336 // get the current state of SHIFT/CTRL/ALT keys
 337 inline bool wxIsModifierDown(int vk)
 338 {
 339     // GetKeyState() returns different negative values on WinME and WinNT,
 340     // so simply test for negative value.
 341     return ::GetKeyState(vk) < 0;
 342 }
 343
 344 inline bool wxIsShiftDown()
 345 {
 346     return wxIsModifierDown(VK_SHIFT);
 347 }
 348
 349 inline bool wxIsCtrlDown()
 350 {
 351     return wxIsModifierDown(VK_CONTROL);
 352 }
 353
 354 inline bool wxIsAltDown()
 355 {
 356     return wxIsModifierDown(VK_MENU);
 357 }
 358
 359 inline bool wxIsAnyModifierDown()
 360 {
 361     return wxIsShiftDown() || wxIsCtrlDown() || wxIsAltDown();
 362 }
 363
 364 // wrapper around GetWindowRect() and GetClientRect() APIs doing error checking
 365 // for Win32
 366 inline RECT wxGetWindowRect(HWND hwnd)
 367 {
 368     RECT rect;
 369
 370     if ( !::GetWindowRect(hwnd, &rect) )
 371         wxLogLastError(_T("GetWindowRect"));
 372
 373     return rect;
 374 }
 375
 376 inline RECT wxGetClientRect(HWND hwnd)
 377 {
 378     RECT rect;
 379
 380     if ( !::GetClientRect(hwnd, &rect) )
 381         wxLogLastError(_T("GetClientRect"));
 382
 383     return rect;
 384 }
 385
 386 // ---------------------------------------------------------------------------
 387 // small helper classes
 388 // ---------------------------------------------------------------------------
 389
 390 // create an instance of this class and use it as the HDC for screen, will
 391 // automatically release the DC going out of scope
 392 class ScreenHDC
 393 {
 394 public:
 395     ScreenHDC() { m_hdc = ::GetDC(NULL);    }
 396    ~ScreenHDC() { ::ReleaseDC(NULL, m_hdc); }
 397
 398     operator HDC() const { return m_hdc; }
 399
 400 private:
 401     HDC m_hdc;
 402
 403     wxDECLARE_NO_COPY_CLASS(ScreenHDC);
 404 };
 405
 406 // the same as ScreenHDC but for window DCs
 407 class WindowHDC
 408 {
 409 public:
 410     WindowHDC(HWND hwnd) { m_hdc = ::GetDC(m_hwnd = hwnd); }
 411    ~WindowHDC() { ::ReleaseDC(m_hwnd, m_hdc); }
 412
 413     operator HDC() const { return m_hdc; }
 414
 415 private:
 416    HWND m_hwnd;
 417    HDC m_hdc;
 418
 419    wxDECLARE_NO_COPY_CLASS(WindowHDC);
 420 };
 421
 422 // the same as ScreenHDC but for memory DCs: creates the HDC compatible with
 423 // the given one (screen by default) in ctor and destroys it in dtor
 424 class MemoryHDC
 425 {
 426 public:
 427     MemoryHDC(HDC hdc = 0) { m_hdc = ::CreateCompatibleDC(hdc); }
 428    ~MemoryHDC() { ::DeleteDC(m_hdc); }
 429
 430     operator HDC() const { return m_hdc; }
 431
 432 private:
 433     HDC m_hdc;
 434
 435     wxDECLARE_NO_COPY_CLASS(MemoryHDC);
 436 };
 437
 438 // a class which selects a GDI object into a DC in its ctor and deselects in
 439 // dtor
 440 class SelectInHDC
 441 {
 442 private:
 443     void DoInit(HGDIOBJ hgdiobj) { m_hgdiobj = ::SelectObject(m_hdc, hgdiobj); }
 444
 445 public:
 446     SelectInHDC() : m_hdc(NULL) { }
 447     SelectInHDC(HDC hdc, HGDIOBJ hgdiobj) : m_hdc(hdc) { DoInit(hgdiobj); }
 448
 449     void Init(HDC hdc, HGDIOBJ hgdiobj)
 450     {
 451         wxASSERT_MSG( !m_hdc, _T("initializing twice?") );
 452
 453         m_hdc = hdc;
 454
 455         DoInit(hgdiobj);
 456     }
 457
 458     ~SelectInHDC() { if ( m_hdc ) ::SelectObject(m_hdc, m_hgdiobj); }
 459
 460     // return true if the object was successfully selected
 461     operator bool() const { return m_hgdiobj != 0; }
 462
 463 private:
 464     HDC m_hdc;
 465     HGDIOBJ m_hgdiobj;
 466
 467     wxDECLARE_NO_COPY_CLASS(SelectInHDC);
 468 };
 469
 470 // a class which cleans up any GDI object
 471 class AutoGDIObject
 472 {
 473 protected:
 474     AutoGDIObject() { m_gdiobj = NULL; }
 475     AutoGDIObject(HGDIOBJ gdiobj) : m_gdiobj(gdiobj) { }
 476     ~AutoGDIObject() { if ( m_gdiobj ) ::DeleteObject(m_gdiobj); }
 477
 478     void InitGdiobj(HGDIOBJ gdiobj)
 479     {
 480         wxASSERT_MSG( !m_gdiobj, _T("initializing twice?") );
 481
 482         m_gdiobj = gdiobj;
 483     }
 484
 485     HGDIOBJ GetObject() const { return m_gdiobj; }
 486
 487 private:
 488     HGDIOBJ m_gdiobj;
 489 };
 490
 491 // TODO: all this asks for using a AutoHandler<T, CreateFunc> template...
 492
 493 // a class for temporary brushes
 494 class AutoHBRUSH : private AutoGDIObject
 495 {
 496 public:
 497     AutoHBRUSH(COLORREF col)
 498         : AutoGDIObject(::CreateSolidBrush(col)) { }
 499
 500     operator HBRUSH() const { return (HBRUSH)GetObject(); }
 501 };
 502
 503 // a class for temporary fonts
 504 class AutoHFONT : private AutoGDIObject
 505 {
 506 private:
 507 public:
 508     AutoHFONT()
 509         : AutoGDIObject() { }
 510
 511     AutoHFONT(const LOGFONT& lf)
 512         : AutoGDIObject(::CreateFontIndirect(&lf)) { }
 513
 514     void Init(const LOGFONT& lf) { InitGdiobj(::CreateFontIndirect(&lf)); }
 515
 516     operator HFONT() const { return (HFONT)GetObject(); }
 517 };
 518
 519 // a class for temporary pens
 520 class AutoHPEN : private AutoGDIObject
 521 {
 522 public:
 523     AutoHPEN(COLORREF col)
 524         : AutoGDIObject(::CreatePen(PS_SOLID, 0, col)) { }
 525
 526     operator HPEN() const { return (HPEN)GetObject(); }
 527 };
 528
 529 // classes for temporary bitmaps
 530 class AutoHBITMAP : private AutoGDIObject
 531 {
 532 public:
 533     AutoHBITMAP(HBITMAP hbmp) : AutoGDIObject(hbmp) { }
 534
 535     operator HBITMAP() const { return (HBITMAP)GetObject(); }
 536 };
 537
 538 class CompatibleBitmap : public AutoHBITMAP
 539 {
 540 public:
 541     CompatibleBitmap(HDC hdc, int w, int h)
 542         : AutoHBITMAP(::CreateCompatibleBitmap(hdc, w, h))
 543     {
 544     }
 545 };
 546
 547 class MonoBitmap : public AutoHBITMAP
 548 {
 549 public:
 550     MonoBitmap(int w, int h)
 551         : AutoHBITMAP(::CreateBitmap(w, h, 1, 1, 0))
 552     {
 553     }
 554 };
 555
 556 // class automatically destroys the region object
 557 class AutoHRGN : private AutoGDIObject
 558 {
 559 public:
 560     AutoHRGN(HRGN hrgn) : AutoGDIObject(hrgn) { }
 561
 562     operator HRGN() const { return (HRGN)GetObject(); }
 563 };
 564
 565 // class sets the specified clipping region during its life time
 566 class HDCClipper
 567 {
 568 public:
 569     HDCClipper(HDC hdc, HRGN hrgn)
 570         : m_hdc(hdc)
 571     {
 572         if ( !::SelectClipRgn(hdc, hrgn) )
 573             wxLogLastError(_T("SelectClipRgn"));
 574     }
 575
 576     ~HDCClipper()
 577     {
 578         ::SelectClipRgn(m_hdc, NULL);
 579     }
 580
 581 private:
 582     HDC m_hdc;
 583
 584     wxDECLARE_NO_COPY_CLASS(HDCClipper);
 585 };
 586
 587 // set the given map mode for the life time of this object
 588 //
 589 // NB: SetMapMode() is not supported by CE so we also define a helper macro
 590 //     to avoid using it there
 591 #ifdef __WXWINCE__
 592     #define wxCHANGE_HDC_MAP_MODE(hdc, mm)
 593 #else // !__WXWINCE__
 594     class HDCMapModeChanger
 595     {
 596     public:
 597         HDCMapModeChanger(HDC hdc, int mm)
 598             : m_hdc(hdc)
 599         {
 600             m_modeOld = ::SetMapMode(hdc, mm);
 601             if ( !m_modeOld )
 602                 wxLogLastError(_T("SelectClipRgn"));
 603         }
 604
 605         ~HDCMapModeChanger()
 606         {
 607             if ( m_modeOld )
 608                 ::SetMapMode(m_hdc, m_modeOld);
 609         }
 610
 611     private:
 612         HDC m_hdc;
 613         int m_modeOld;
 614
 615         wxDECLARE_NO_COPY_CLASS(HDCMapModeChanger);
 616     };
 617
 618     #define wxCHANGE_HDC_MAP_MODE(hdc, mm) \
 619         HDCMapModeChanger wxMAKE_UNIQUE_NAME(wxHDCMapModeChanger)(hdc, mm)
 620 #endif // __WXWINCE__/!__WXWINCE__
 621
 622 // smart pointer using GlobalAlloc/GlobalFree()
 623 class GlobalPtr
 624 {
 625 public:
 626     // default ctor, call Init() later
 627     GlobalPtr()
 628     {
 629         m_hGlobal = NULL;
 630     }
 631
 632     // allocates a block of given size
 633     void Init(size_t size, unsigned flags = GMEM_MOVEABLE)
 634     {
 635         m_hGlobal = ::GlobalAlloc(flags, size);
 636         if ( !m_hGlobal )
 637             wxLogLastError(_T("GlobalAlloc"));
 638     }
 639
 640     GlobalPtr(size_t size, unsigned flags = GMEM_MOVEABLE)
 641     {
 642         Init(size, flags);
 643     }
 644
 645     ~GlobalPtr()
 646     {
 647         if ( m_hGlobal && ::GlobalFree(m_hGlobal) )
 648             wxLogLastError(_T("GlobalFree"));
 649     }
 650
 651     // implicit conversion
 652     operator HGLOBAL() const { return m_hGlobal; }
 653
 654 private:
 655     HGLOBAL m_hGlobal;
 656
 657     wxDECLARE_NO_COPY_CLASS(GlobalPtr);
 658 };
 659
 660 // when working with global pointers (which is unfortunately still necessary
 661 // sometimes, e.g. for clipboard) it is important to unlock them exactly as
 662 // many times as we lock them which just asks for using a "smart lock" class
 663 class GlobalPtrLock
 664 {
 665 public:
 666     // default ctor, use Init() later -- should only be used if the HGLOBAL can
 667     // be NULL (in which case Init() shouldn't be called)
 668     GlobalPtrLock()
 669     {
 670         m_hGlobal = NULL;
 671         m_ptr = NULL;
 672     }
 673
 674     // initialize the object, may be only called if we were created using the
 675     // default ctor; HGLOBAL must not be NULL
 676     void Init(HGLOBAL hGlobal)
 677     {
 678         m_hGlobal = hGlobal;
 679
 680         // NB: GlobalLock() is a macro, not a function, hence don't use the
 681         //     global scope operator with it (and neither with GlobalUnlock())
 682         m_ptr = GlobalLock(hGlobal);
 683         if ( !m_ptr )
 684             wxLogLastError(_T("GlobalLock"));
 685     }
 686
 687     // initialize the object, HGLOBAL must not be NULL
 688     GlobalPtrLock(HGLOBAL hGlobal)
 689     {
 690         Init(hGlobal);
 691     }
 692
 693     ~GlobalPtrLock()
 694     {
 695         if ( m_hGlobal && !GlobalUnlock(m_hGlobal) )
 696         {
 697             // this might happen simply because the block became unlocked
 698             DWORD dwLastError = ::GetLastError();
 699             if ( dwLastError != NO_ERROR )
 700             {
 701                 wxLogApiError(_T("GlobalUnlock"), dwLastError);
 702             }
 703         }
 704     }
 705
 706     void *Get() const { return m_ptr; }
 707     operator void *() const { return m_ptr; }
 708
 709 private:
 710     HGLOBAL m_hGlobal;
 711     void *m_ptr;
 712
 713     wxDECLARE_NO_COPY_CLASS(GlobalPtrLock);
 714 };
 715
 716 // register the class when it is first needed and unregister it in dtor
 717 class ClassRegistrar
 718 {
 719 public:
 720     // ctor doesn't register the class, call Initialize() for this
 721     ClassRegistrar() { m_registered = -1; }
 722
 723     // return true if the class is already registered
 724     bool IsInitialized() const { return m_registered != -1; }
 725
 726     // return true if the class had been already registered
 727     bool IsRegistered() const { return m_registered == 1; }
 728
 729     // try to register the class if not done yet, return true on success
 730     bool Register(const WNDCLASS& wc)
 731     {
 732         // we should only be called if we hadn't been initialized yet
 733         wxASSERT_MSG( m_registered == -1,
 734                         _T("calling ClassRegistrar::Register() twice?") );
 735
 736         m_registered = ::RegisterClass(&wc) ? 1 : 0;
 737         if ( !IsRegistered() )
 738         {
 739             wxLogLastError(_T("RegisterClassEx()"));
 740         }
 741         else
 742         {
 743             m_clsname = wc.lpszClassName;
 744         }
 745
 746         return m_registered == 1;
 747     }
 748
 749     // get the name of the registered class (returns empty string if not
 750     // registered)
 751     const wxString& GetName() const { return m_clsname; }
 752
 753     // unregister the class if it had been registered
 754     ~ClassRegistrar()
 755     {
 756         if ( IsRegistered() )
 757         {
 758             if ( !::UnregisterClass(m_clsname.wx_str(), wxhInstance) )
 759             {
 760                 wxLogLastError(_T("UnregisterClass"));
 761             }
 762         }
 763     }
 764
 765 private:
 766     // initial value is -1 which means that we hadn't tried registering the
 767     // class yet, it becomes true or false (1 or 0) when Initialize() is called
 768     int m_registered;
 769
 770     // the name of the class, only non empty if it had been registered
 771     wxString m_clsname;
 772 };
 773
 774 // ---------------------------------------------------------------------------
 775 // macros to make casting between WXFOO and FOO a bit easier: the GetFoo()
 776 // returns Foo cast to the Windows type for oruselves, while GetFooOf() takes
 777 // an argument which should be a pointer or reference to the object of the
 778 // corresponding class (this depends on the macro)
 779 // ---------------------------------------------------------------------------
 780
 781 #define GetHwnd()               ((HWND)GetHWND())
 782 #define GetHwndOf(win)          ((HWND)((win)->GetHWND()))
 783 // old name
 784 #define GetWinHwnd              GetHwndOf
 785
 786 #define GetHdc()                ((HDC)GetHDC())
 787 #define GetHdcOf(dc)            ((HDC)(dc).GetHDC())
 788
 789 #define GetHbitmap()            ((HBITMAP)GetHBITMAP())
 790 #define GetHbitmapOf(bmp)       ((HBITMAP)(bmp).GetHBITMAP())
 791
 792 #define GetHicon()              ((HICON)GetHICON())
 793 #define GetHiconOf(icon)        ((HICON)(icon).GetHICON())
 794
 795 #define GetHaccel()             ((HACCEL)GetHACCEL())
 796 #define GetHaccelOf(table)      ((HACCEL)((table).GetHACCEL()))
 797
 798 #define GetHbrush()             ((HBRUSH)GetResourceHandle())
 799 #define GetHbrushOf(brush)      ((HBRUSH)(brush).GetResourceHandle())
 800
 801 #define GetHmenu()              ((HMENU)GetHMenu())
 802 #define GetHmenuOf(menu)        ((HMENU)(menu)->GetHMenu())
 803
 804 #define GetHcursor()            ((HCURSOR)GetHCURSOR())
 805 #define GetHcursorOf(cursor)    ((HCURSOR)(cursor).GetHCURSOR())
 806
 807 #define GetHfont()              ((HFONT)GetHFONT())
 808 #define GetHfontOf(font)        ((HFONT)(font).GetHFONT())
 809
 810 #define GetHimagelist()         ((HIMAGELIST)GetHIMAGELIST())
 811 #define GetHimagelistOf(imgl)   ((HIMAGELIST)(imgl)->GetHIMAGELIST())
 812
 813 #define GetHpalette()           ((HPALETTE)GetHPALETTE())
 814 #define GetHpaletteOf(pal)      ((HPALETTE)(pal).GetHPALETTE())
 815
 816 #define GetHpen()               ((HPEN)GetResourceHandle())
 817 #define GetHpenOf(pen)          ((HPEN)(pen).GetResourceHandle())
 818
 819 #define GetHrgn()               ((HRGN)GetHRGN())
 820 #define GetHrgnOf(rgn)          ((HRGN)(rgn).GetHRGN())
 821
 822 #endif // wxUSE_GUI
 823
 824 // ---------------------------------------------------------------------------
 825 // global functions
 826 // ---------------------------------------------------------------------------
 827
 828 extern "C"
 829 {
 830     WXDLLIMPEXP_BASE HINSTANCE wxGetInstance();
 831 }
 832
 833 WXDLLIMPEXP_BASE void wxSetInstance(HINSTANCE hInst);
 834
 835 // return the full path of the given module
 836 inline wxString wxGetFullModuleName(HMODULE hmod)
 837 {
 838     wxString fullname;
 839     if ( !::GetModuleFileName
 840             (
 841                 hmod,
 842                 wxStringBuffer(fullname, MAX_PATH),
 843                 MAX_PATH
 844             ) )
 845     {
 846         wxLogLastError(_T("GetModuleFileName"));
 847     }
 848
 849     return fullname;
 850 }
 851
 852 // return the full path of the program file
 853 inline wxString wxGetFullModuleName()
 854 {
 855     return wxGetFullModuleName((HMODULE)wxGetInstance());
 856 }
 857
 858 // return the run-time version of the OS in a format similar to
 859 // WINVER/_WIN32_WINNT compile-time macros:
 860 //
 861 //      0x0300      Windows NT 3.51
 862 //      0x0400      Windows 95, NT4
 863 //      0x0410      Windows 98
 864 //      0x0500      Windows ME, 2000
 865 //      0x0501      Windows XP
 866 //      0x0502      Windows 2003
 867 //      0x0600      Longhorn
 868 //
 869 // for the other Windows versions 0 is currently returned
 870 enum wxWinVersion
 871 {
 872     wxWinVersion_Unknown = 0,
 873
 874     wxWinVersion_3 = 0x0300,
 875     wxWinVersion_NT3 = wxWinVersion_3,
 876
 877     wxWinVersion_4 = 0x0400,
 878     wxWinVersion_95 = wxWinVersion_4,
 879     wxWinVersion_NT4 = wxWinVersion_4,
 880     wxWinVersion_98 = 0x0410,
 881
 882     wxWinVersion_5 = 0x0500,
 883     wxWinVersion_ME = wxWinVersion_5,
 884     wxWinVersion_NT5 = wxWinVersion_5,
 885     wxWinVersion_2000 = wxWinVersion_5,
 886     wxWinVersion_XP = 0x0501,
 887     wxWinVersion_2003 = 0x0502,
 888
 889     wxWinVersion_6 = 0x0600,
 890     wxWinVersion_Vista = wxWinVersion_6,
 891     wxWinVersion_NT6 = wxWinVersion_6
 892 };
 893
 894 WXDLLIMPEXP_BASE wxWinVersion wxGetWinVersion();
 895
 896 #if wxUSE_GUI
 897
 898 // cursor stuff
 899 extern HCURSOR wxGetCurrentBusyCursor();    // from msw/utils.cpp
 900 extern const wxCursor *wxGetGlobalCursor(); // from msw/cursor.cpp
 901
 902 WXDLLIMPEXP_CORE void wxGetCharSize(WXHWND wnd, int *x, int *y, const wxFont& the_font);
 903 WXDLLIMPEXP_CORE void wxFillLogFont(LOGFONT *logFont, const wxFont *font);
 904 WXDLLIMPEXP_CORE wxFont wxCreateFontFromLogFont(const LOGFONT *logFont);
 905 WXDLLIMPEXP_CORE wxFontEncoding wxGetFontEncFromCharSet(int charset);
 906
 907 WXDLLIMPEXP_CORE void wxSliderEvent(WXHWND control, WXWORD wParam, WXWORD pos);
 908 WXDLLIMPEXP_CORE void wxScrollBarEvent(WXHWND hbar, WXWORD wParam, WXWORD pos);
 909
 910 // Find maximum size of window/rectangle
 911 extern WXDLLIMPEXP_CORE void wxFindMaxSize(WXHWND hwnd, RECT *rect);
 912
 913 // Safely get the window text (i.e. without using fixed size buffer)
 914 extern WXDLLIMPEXP_CORE wxString wxGetWindowText(WXHWND hWnd);
 915
 916 // get the window class name
 917 extern WXDLLIMPEXP_CORE wxString wxGetWindowClass(WXHWND hWnd);
 918
 919 // get the window id (should be unsigned, hence this is not wxWindowID which
 920 // is, for mainly historical reasons, signed)
 921 extern WXDLLIMPEXP_CORE int wxGetWindowId(WXHWND hWnd);
 922
 923 // check if hWnd's WNDPROC is wndProc. Return true if yes, false if they are
 924 // different
 925 extern WXDLLIMPEXP_CORE bool wxCheckWindowWndProc(WXHWND hWnd, WXFARPROC wndProc);
 926
 927 // Does this window style specify any border?
 928 inline bool wxStyleHasBorder(long style)
 929 {
 930     return (style & (wxSIMPLE_BORDER | wxRAISED_BORDER |
 931                      wxSUNKEN_BORDER | wxDOUBLE_BORDER)) != 0;
 932 }
 933
 934 inline long wxGetWindowExStyle(const wxWindowMSW *win)
 935 {
 936     return ::GetWindowLong(GetHwndOf(win), GWL_EXSTYLE);
 937 }
 938
 939 inline bool wxHasWindowExStyle(const wxWindowMSW *win, long style)
 940 {
 941     return (wxGetWindowExStyle(win) & style) != 0;
 942 }
 943
 944 inline long wxSetWindowExStyle(const wxWindowMSW *win, long style)
 945 {
 946     return ::SetWindowLong(GetHwndOf(win), GWL_EXSTYLE, style);
 947 }
 948
 949 // ----------------------------------------------------------------------------
 950 // functions mapping HWND to wxWindow
 951 // ----------------------------------------------------------------------------
 952
 953 // this function simply checks whether the given hwnd corresponds to a wxWindow
 954 // and returns either that window if it does or NULL otherwise
 955 extern WXDLLIMPEXP_CORE wxWindow* wxFindWinFromHandle(HWND hwnd);
 956
 957 // without STRICT WXHWND is the same as HWND anyhow
 958 inline wxWindow* wxFindWinFromHandle(WXHWND hWnd)
 959 {
 960     return wxFindWinFromHandle(static_cast<HWND>(hWnd));
 961 }
 962
 963 // find the window for HWND which is part of some wxWindow, i.e. unlike
 964 // wxFindWinFromHandle() above it will also work for "sub controls" of a
 965 // wxWindow.
 966 //
 967 // returns the wxWindow corresponding to the given HWND or NULL.
 968 extern WXDLLIMPEXP_CORE wxWindow *wxGetWindowFromHWND(WXHWND hwnd);
 969
 970 // Get the size of an icon
 971 extern WXDLLIMPEXP_CORE wxSize wxGetHiconSize(HICON hicon);
 972
 973 // Lines are drawn differently for WinCE and regular WIN32
 974 WXDLLIMPEXP_CORE void wxDrawLine(HDC hdc, int x1, int y1, int x2, int y2);
 975
 976 // fill the client rect of the given window on the provided dc using this brush
 977 inline void wxFillRect(HWND hwnd, HDC hdc, HBRUSH hbr)
 978 {
 979     RECT rc;
 980     ::GetClientRect(hwnd, &rc);
 981     ::FillRect(hdc, &rc, hbr);
 982 }
 983
 984 // ----------------------------------------------------------------------------
 985 // 32/64 bit helpers
 986 // ----------------------------------------------------------------------------
 987
 988 #ifdef __WIN64__
 989
 990 inline void *wxGetWindowProc(HWND hwnd)
 991 {
 992     return (void *)::GetWindowLongPtr(hwnd, GWLP_WNDPROC);
 993 }
 994
 995 inline void *wxGetWindowUserData(HWND hwnd)
 996 {
 997     return (void *)::GetWindowLongPtr(hwnd, GWLP_USERDATA);
 998 }
 999
1000 inline WNDPROC wxSetWindowProc(HWND hwnd, WNDPROC func)
1001 {
1002     return (WNDPROC)::SetWindowLongPtr(hwnd, GWLP_WNDPROC, (LONG_PTR)func);
1003 }
1004
1005 inline void *wxSetWindowUserData(HWND hwnd, void *data)
1006 {
1007     return (void *)::SetWindowLongPtr(hwnd, GWLP_USERDATA, (LONG_PTR)data);
1008 }
1009
1010 #else // __WIN32__
1011
1012 // note that the casts to LONG_PTR here are required even on 32-bit machines
1013 // for the 64-bit warning mode of later versions of MSVC (C4311/4312)
1014 inline WNDPROC wxGetWindowProc(HWND hwnd)
1015 {
1016     return (WNDPROC)(LONG_PTR)::GetWindowLong(hwnd, GWL_WNDPROC);
1017 }
1018
1019 inline void *wxGetWindowUserData(HWND hwnd)
1020 {
1021     return (void *)(LONG_PTR)::GetWindowLong(hwnd, GWL_USERDATA);
1022 }
1023
1024 inline WNDPROC wxSetWindowProc(HWND hwnd, WNDPROC func)
1025 {
1026     return (WNDPROC)(LONG_PTR)::SetWindowLong(hwnd, GWL_WNDPROC, (LONG_PTR)func);
1027 }
1028
1029 inline void *wxSetWindowUserData(HWND hwnd, void *data)
1030 {
1031     return (void *)(LONG_PTR)::SetWindowLong(hwnd, GWL_USERDATA, (LONG_PTR)data);
1032 }
1033
1034 #endif // __WIN64__/__WIN32__
1035
1036 #endif // wxUSE_GUI
1037
1038 #endif // _WX_PRIVATE_H_