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 PixelToHIMETRIC(LONG *x, LONG *y);
 293
 294 // Windows convention of the mask is opposed to the wxWidgets one, so we need
 295 // to invert the mask each time we pass one/get one to/from Windows
 296 extern HBITMAP wxInvertMask(HBITMAP hbmpMask, int w = 0, int h = 0);
 297
 298 // Creates an icon or cursor depending from a bitmap
 299 //
 300 // The bitmap must be valid and it should have a mask. If it doesn't, a default
 301 // mask is created using light grey as the transparent colour.
 302 extern HICON wxBitmapToHICON(const wxBitmap& bmp);
 303
 304 // Same requirments as above apply and the bitmap must also have the correct
 305 // size.
 306 extern
 307 HCURSOR wxBitmapToHCURSOR(const wxBitmap& bmp, int hotSpotX, int hotSpotY);
 308
 309
 310 #if wxUSE_OWNER_DRAWN
 311
 312 // Draw the bitmap in specified state (this is used by owner drawn controls)
 313 enum wxDSBStates
 314 {
 315     wxDSB_NORMAL = 0,
 316     wxDSB_SELECTED,
 317     wxDSB_DISABLED
 318 };
 319
 320 extern
 321 BOOL wxDrawStateBitmap(HDC hDC, HBITMAP hBitmap, int x, int y, UINT uState);
 322
 323 #endif // wxUSE_OWNER_DRAWN
 324
 325 // get (x, y) from DWORD - notice that HI/LOWORD can *not* be used because they
 326 // will fail on system with multiple monitors where the coords may be negative
 327 //
 328 // these macros are standard now (Win98) but some older headers don't have them
 329 #ifndef GET_X_LPARAM
 330     #define GET_X_LPARAM(lp) ((int)(short)LOWORD(lp))
 331     #define GET_Y_LPARAM(lp) ((int)(short)HIWORD(lp))
 332 #endif // GET_X_LPARAM
 333
 334 // get the current state of SHIFT/CTRL/ALT keys
 335 inline bool wxIsModifierDown(int vk)
 336 {
 337     // GetKeyState() returns different negative values on WinME and WinNT,
 338     // so simply test for negative value.
 339     return ::GetKeyState(vk) < 0;
 340 }
 341
 342 inline bool wxIsShiftDown()
 343 {
 344     return wxIsModifierDown(VK_SHIFT);
 345 }
 346
 347 inline bool wxIsCtrlDown()
 348 {
 349     return wxIsModifierDown(VK_CONTROL);
 350 }
 351
 352 inline bool wxIsAltDown()
 353 {
 354     return wxIsModifierDown(VK_MENU);
 355 }
 356
 357 inline bool wxIsAnyModifierDown()
 358 {
 359     return wxIsShiftDown() || wxIsCtrlDown() || wxIsAltDown();
 360 }
 361
 362 // wrapper around GetWindowRect() and GetClientRect() APIs doing error checking
 363 // for Win32
 364 inline RECT wxGetWindowRect(HWND hwnd)
 365 {
 366     RECT rect;
 367
 368     if ( !::GetWindowRect(hwnd, &rect) )
 369         wxLogLastError(_T("GetWindowRect"));
 370
 371     return rect;
 372 }
 373
 374 inline RECT wxGetClientRect(HWND hwnd)
 375 {
 376     RECT rect;
 377
 378     if ( !::GetClientRect(hwnd, &rect) )
 379         wxLogLastError(_T("GetClientRect"));
 380
 381     return rect;
 382 }
 383
 384 // ---------------------------------------------------------------------------
 385 // small helper classes
 386 // ---------------------------------------------------------------------------
 387
 388 // create an instance of this class and use it as the HDC for screen, will
 389 // automatically release the DC going out of scope
 390 class ScreenHDC
 391 {
 392 public:
 393     ScreenHDC() { m_hdc = ::GetDC(NULL);    }
 394    ~ScreenHDC() { ::ReleaseDC(NULL, m_hdc); }
 395
 396     operator HDC() const { return m_hdc; }
 397
 398 private:
 399     HDC m_hdc;
 400
 401     wxDECLARE_NO_COPY_CLASS(ScreenHDC);
 402 };
 403
 404 // the same as ScreenHDC but for window DCs
 405 class WindowHDC
 406 {
 407 public:
 408     WindowHDC(HWND hwnd) { m_hdc = ::GetDC(m_hwnd = hwnd); }
 409    ~WindowHDC() { ::ReleaseDC(m_hwnd, m_hdc); }
 410
 411     operator HDC() const { return m_hdc; }
 412
 413 private:
 414    HWND m_hwnd;
 415    HDC m_hdc;
 416
 417    wxDECLARE_NO_COPY_CLASS(WindowHDC);
 418 };
 419
 420 // the same as ScreenHDC but for memory DCs: creates the HDC compatible with
 421 // the given one (screen by default) in ctor and destroys it in dtor
 422 class MemoryHDC
 423 {
 424 public:
 425     MemoryHDC(HDC hdc = 0) { m_hdc = ::CreateCompatibleDC(hdc); }
 426    ~MemoryHDC() { ::DeleteDC(m_hdc); }
 427
 428     operator HDC() const { return m_hdc; }
 429
 430 private:
 431     HDC m_hdc;
 432
 433     wxDECLARE_NO_COPY_CLASS(MemoryHDC);
 434 };
 435
 436 // a class which selects a GDI object into a DC in its ctor and deselects in
 437 // dtor
 438 class SelectInHDC
 439 {
 440 private:
 441     void DoInit(HGDIOBJ hgdiobj) { m_hgdiobj = ::SelectObject(m_hdc, hgdiobj); }
 442
 443 public:
 444     SelectInHDC() : m_hdc(NULL) { }
 445     SelectInHDC(HDC hdc, HGDIOBJ hgdiobj) : m_hdc(hdc) { DoInit(hgdiobj); }
 446
 447     void Init(HDC hdc, HGDIOBJ hgdiobj)
 448     {
 449         wxASSERT_MSG( !m_hdc, _T("initializing twice?") );
 450
 451         m_hdc = hdc;
 452
 453         DoInit(hgdiobj);
 454     }
 455
 456     ~SelectInHDC() { if ( m_hdc ) ::SelectObject(m_hdc, m_hgdiobj); }
 457
 458     // return true if the object was successfully selected
 459     operator bool() const { return m_hgdiobj != 0; }
 460
 461 private:
 462     HDC m_hdc;
 463     HGDIOBJ m_hgdiobj;
 464
 465     wxDECLARE_NO_COPY_CLASS(SelectInHDC);
 466 };
 467
 468 // a class which cleans up any GDI object
 469 class AutoGDIObject
 470 {
 471 protected:
 472     AutoGDIObject() { m_gdiobj = NULL; }
 473     AutoGDIObject(HGDIOBJ gdiobj) : m_gdiobj(gdiobj) { }
 474     ~AutoGDIObject() { if ( m_gdiobj ) ::DeleteObject(m_gdiobj); }
 475
 476     void InitGdiobj(HGDIOBJ gdiobj)
 477     {
 478         wxASSERT_MSG( !m_gdiobj, _T("initializing twice?") );
 479
 480         m_gdiobj = gdiobj;
 481     }
 482
 483     HGDIOBJ GetObject() const { return m_gdiobj; }
 484
 485 private:
 486     HGDIOBJ m_gdiobj;
 487 };
 488
 489 // TODO: all this asks for using a AutoHandler<T, CreateFunc> template...
 490
 491 // a class for temporary brushes
 492 class AutoHBRUSH : private AutoGDIObject
 493 {
 494 public:
 495     AutoHBRUSH(COLORREF col)
 496         : AutoGDIObject(::CreateSolidBrush(col)) { }
 497
 498     operator HBRUSH() const { return (HBRUSH)GetObject(); }
 499 };
 500
 501 // a class for temporary fonts
 502 class AutoHFONT : private AutoGDIObject
 503 {
 504 private:
 505 public:
 506     AutoHFONT()
 507         : AutoGDIObject() { }
 508
 509     AutoHFONT(const LOGFONT& lf)
 510         : AutoGDIObject(::CreateFontIndirect(&lf)) { }
 511
 512     void Init(const LOGFONT& lf) { InitGdiobj(::CreateFontIndirect(&lf)); }
 513
 514     operator HFONT() const { return (HFONT)GetObject(); }
 515 };
 516
 517 // a class for temporary pens
 518 class AutoHPEN : private AutoGDIObject
 519 {
 520 public:
 521     AutoHPEN(COLORREF col)
 522         : AutoGDIObject(::CreatePen(PS_SOLID, 0, col)) { }
 523
 524     operator HPEN() const { return (HPEN)GetObject(); }
 525 };
 526
 527 // classes for temporary bitmaps
 528 class AutoHBITMAP : private AutoGDIObject
 529 {
 530 public:
 531     AutoHBITMAP(HBITMAP hbmp) : AutoGDIObject(hbmp) { }
 532
 533     operator HBITMAP() const { return (HBITMAP)GetObject(); }
 534 };
 535
 536 class CompatibleBitmap : public AutoHBITMAP
 537 {
 538 public:
 539     CompatibleBitmap(HDC hdc, int w, int h)
 540         : AutoHBITMAP(::CreateCompatibleBitmap(hdc, w, h))
 541     {
 542     }
 543 };
 544
 545 class MonoBitmap : public AutoHBITMAP
 546 {
 547 public:
 548     MonoBitmap(int w, int h)
 549         : AutoHBITMAP(::CreateBitmap(w, h, 1, 1, 0))
 550     {
 551     }
 552 };
 553
 554 // class automatically destroys the region object
 555 class AutoHRGN : private AutoGDIObject
 556 {
 557 public:
 558     AutoHRGN(HRGN hrgn) : AutoGDIObject(hrgn) { }
 559
 560     operator HRGN() const { return (HRGN)GetObject(); }
 561 };
 562
 563 // class sets the specified clipping region during its life time
 564 class HDCClipper
 565 {
 566 public:
 567     HDCClipper(HDC hdc, HRGN hrgn)
 568         : m_hdc(hdc)
 569     {
 570         if ( !::SelectClipRgn(hdc, hrgn) )
 571             wxLogLastError(_T("SelectClipRgn"));
 572     }
 573
 574     ~HDCClipper()
 575     {
 576         ::SelectClipRgn(m_hdc, NULL);
 577     }
 578
 579 private:
 580     HDC m_hdc;
 581
 582     wxDECLARE_NO_COPY_CLASS(HDCClipper);
 583 };
 584
 585 // set the given map mode for the life time of this object
 586 //
 587 // NB: SetMapMode() is not supported by CE so we also define a helper macro
 588 //     to avoid using it there
 589 #ifdef __WXWINCE__
 590     #define wxCHANGE_HDC_MAP_MODE(hdc, mm)
 591 #else // !__WXWINCE__
 592     class HDCMapModeChanger
 593     {
 594     public:
 595         HDCMapModeChanger(HDC hdc, int mm)
 596             : m_hdc(hdc)
 597         {
 598             m_modeOld = ::SetMapMode(hdc, mm);
 599             if ( !m_modeOld )
 600                 wxLogLastError(_T("SelectClipRgn"));
 601         }
 602
 603         ~HDCMapModeChanger()
 604         {
 605             if ( m_modeOld )
 606                 ::SetMapMode(m_hdc, m_modeOld);
 607         }
 608
 609     private:
 610         HDC m_hdc;
 611         int m_modeOld;
 612
 613         wxDECLARE_NO_COPY_CLASS(HDCMapModeChanger);
 614     };
 615
 616     #define wxCHANGE_HDC_MAP_MODE(hdc, mm) \
 617         HDCMapModeChanger wxMAKE_UNIQUE_NAME(wxHDCMapModeChanger)(hdc, mm)
 618 #endif // __WXWINCE__/!__WXWINCE__
 619
 620 // smart pointer using GlobalAlloc/GlobalFree()
 621 class GlobalPtr
 622 {
 623 public:
 624     // default ctor, call Init() later
 625     GlobalPtr()
 626     {
 627         m_hGlobal = NULL;
 628     }
 629
 630     // allocates a block of given size
 631     void Init(size_t size, unsigned flags = GMEM_MOVEABLE)
 632     {
 633         m_hGlobal = ::GlobalAlloc(flags, size);
 634         if ( !m_hGlobal )
 635             wxLogLastError(_T("GlobalAlloc"));
 636     }
 637
 638     GlobalPtr(size_t size, unsigned flags = GMEM_MOVEABLE)
 639     {
 640         Init(size, flags);
 641     }
 642
 643     ~GlobalPtr()
 644     {
 645         if ( m_hGlobal && ::GlobalFree(m_hGlobal) )
 646             wxLogLastError(_T("GlobalFree"));
 647     }
 648
 649     // implicit conversion
 650     operator HGLOBAL() const { return m_hGlobal; }
 651
 652 private:
 653     HGLOBAL m_hGlobal;
 654
 655     wxDECLARE_NO_COPY_CLASS(GlobalPtr);
 656 };
 657
 658 // when working with global pointers (which is unfortunately still necessary
 659 // sometimes, e.g. for clipboard) it is important to unlock them exactly as
 660 // many times as we lock them which just asks for using a "smart lock" class
 661 class GlobalPtrLock
 662 {
 663 public:
 664     // default ctor, use Init() later -- should only be used if the HGLOBAL can
 665     // be NULL (in which case Init() shouldn't be called)
 666     GlobalPtrLock()
 667     {
 668         m_hGlobal = NULL;
 669         m_ptr = NULL;
 670     }
 671
 672     // initialize the object, may be only called if we were created using the
 673     // default ctor; HGLOBAL must not be NULL
 674     void Init(HGLOBAL hGlobal)
 675     {
 676         m_hGlobal = hGlobal;
 677
 678         // NB: GlobalLock() is a macro, not a function, hence don't use the
 679         //     global scope operator with it (and neither with GlobalUnlock())
 680         m_ptr = GlobalLock(hGlobal);
 681         if ( !m_ptr )
 682             wxLogLastError(_T("GlobalLock"));
 683     }
 684
 685     // initialize the object, HGLOBAL must not be NULL
 686     GlobalPtrLock(HGLOBAL hGlobal)
 687     {
 688         Init(hGlobal);
 689     }
 690
 691     ~GlobalPtrLock()
 692     {
 693         if ( m_hGlobal && !GlobalUnlock(m_hGlobal) )
 694         {
 695             // this might happen simply because the block became unlocked
 696             DWORD dwLastError = ::GetLastError();
 697             if ( dwLastError != NO_ERROR )
 698             {
 699                 wxLogApiError(_T("GlobalUnlock"), dwLastError);
 700             }
 701         }
 702     }
 703
 704     void *Get() const { return m_ptr; }
 705     operator void *() const { return m_ptr; }
 706
 707 private:
 708     HGLOBAL m_hGlobal;
 709     void *m_ptr;
 710
 711     wxDECLARE_NO_COPY_CLASS(GlobalPtrLock);
 712 };
 713
 714 // register the class when it is first needed and unregister it in dtor
 715 class ClassRegistrar
 716 {
 717 public:
 718     // ctor doesn't register the class, call Initialize() for this
 719     ClassRegistrar() { m_registered = -1; }
 720
 721     // return true if the class is already registered
 722     bool IsInitialized() const { return m_registered != -1; }
 723
 724     // return true if the class had been already registered
 725     bool IsRegistered() const { return m_registered == 1; }
 726
 727     // try to register the class if not done yet, return true on success
 728     bool Register(const WNDCLASS& wc)
 729     {
 730         // we should only be called if we hadn't been initialized yet
 731         wxASSERT_MSG( m_registered == -1,
 732                         _T("calling ClassRegistrar::Register() twice?") );
 733
 734         m_registered = ::RegisterClass(&wc) ? 1 : 0;
 735         if ( !IsRegistered() )
 736         {
 737             wxLogLastError(_T("RegisterClassEx()"));
 738         }
 739         else
 740         {
 741             m_clsname = wc.lpszClassName;
 742         }
 743
 744         return m_registered == 1;
 745     }
 746
 747     // get the name of the registered class (returns empty string if not
 748     // registered)
 749     const wxString& GetName() const { return m_clsname; }
 750
 751     // unregister the class if it had been registered
 752     ~ClassRegistrar()
 753     {
 754         if ( IsRegistered() )
 755         {
 756             if ( !::UnregisterClass(m_clsname.wx_str(), wxhInstance) )
 757             {
 758                 wxLogLastError(_T("UnregisterClass"));
 759             }
 760         }
 761     }
 762
 763 private:
 764     // initial value is -1 which means that we hadn't tried registering the
 765     // class yet, it becomes true or false (1 or 0) when Initialize() is called
 766     int m_registered;
 767
 768     // the name of the class, only non empty if it had been registered
 769     wxString m_clsname;
 770 };
 771
 772 // ---------------------------------------------------------------------------
 773 // macros to make casting between WXFOO and FOO a bit easier: the GetFoo()
 774 // returns Foo cast to the Windows type for oruselves, while GetFooOf() takes
 775 // an argument which should be a pointer or reference to the object of the
 776 // corresponding class (this depends on the macro)
 777 // ---------------------------------------------------------------------------
 778
 779 #define GetHwnd()               ((HWND)GetHWND())
 780 #define GetHwndOf(win)          ((HWND)((win)->GetHWND()))
 781 // old name
 782 #define GetWinHwnd              GetHwndOf
 783
 784 #define GetHdc()                ((HDC)GetHDC())
 785 #define GetHdcOf(dc)            ((HDC)(dc).GetHDC())
 786
 787 #define GetHbitmap()            ((HBITMAP)GetHBITMAP())
 788 #define GetHbitmapOf(bmp)       ((HBITMAP)(bmp).GetHBITMAP())
 789
 790 #define GetHicon()              ((HICON)GetHICON())
 791 #define GetHiconOf(icon)        ((HICON)(icon).GetHICON())
 792
 793 #define GetHaccel()             ((HACCEL)GetHACCEL())
 794 #define GetHaccelOf(table)      ((HACCEL)((table).GetHACCEL()))
 795
 796 #define GetHbrush()             ((HBRUSH)GetResourceHandle())
 797 #define GetHbrushOf(brush)      ((HBRUSH)(brush).GetResourceHandle())
 798
 799 #define GetHmenu()              ((HMENU)GetHMenu())
 800 #define GetHmenuOf(menu)        ((HMENU)menu->GetHMenu())
 801
 802 #define GetHcursor()            ((HCURSOR)GetHCURSOR())
 803 #define GetHcursorOf(cursor)    ((HCURSOR)(cursor).GetHCURSOR())
 804
 805 #define GetHfont()              ((HFONT)GetHFONT())
 806 #define GetHfontOf(font)        ((HFONT)(font).GetHFONT())
 807
 808 #define GetHimagelist()         ((HIMAGELIST)GetHIMAGELIST())
 809 #define GetHimagelistOf(imgl)   ((HIMAGELIST)imgl->GetHIMAGELIST())
 810
 811 #define GetHpalette()           ((HPALETTE)GetHPALETTE())
 812 #define GetHpaletteOf(pal)      ((HPALETTE)(pal).GetHPALETTE())
 813
 814 #define GetHpen()               ((HPEN)GetResourceHandle())
 815 #define GetHpenOf(pen)          ((HPEN)(pen).GetResourceHandle())
 816
 817 #define GetHrgn()               ((HRGN)GetHRGN())
 818 #define GetHrgnOf(rgn)          ((HRGN)(rgn).GetHRGN())
 819
 820 #endif // wxUSE_GUI
 821
 822 // ---------------------------------------------------------------------------
 823 // global functions
 824 // ---------------------------------------------------------------------------
 825
 826 extern "C"
 827 {
 828     WXDLLIMPEXP_BASE HINSTANCE wxGetInstance();
 829 }
 830
 831 WXDLLIMPEXP_BASE void wxSetInstance(HINSTANCE hInst);
 832
 833 // return the full path of the given module
 834 inline wxString wxGetFullModuleName(HMODULE hmod)
 835 {
 836     wxString fullname;
 837     if ( !::GetModuleFileName
 838             (
 839                 hmod,
 840                 wxStringBuffer(fullname, MAX_PATH),
 841                 MAX_PATH
 842             ) )
 843     {
 844         wxLogLastError(_T("GetModuleFileName"));
 845     }
 846
 847     return fullname;
 848 }
 849
 850 // return the full path of the program file
 851 inline wxString wxGetFullModuleName()
 852 {
 853     return wxGetFullModuleName((HMODULE)wxGetInstance());
 854 }
 855
 856 // return the run-time version of the OS in a format similar to
 857 // WINVER/_WIN32_WINNT compile-time macros:
 858 //
 859 //      0x0300      Windows NT 3.51
 860 //      0x0400      Windows 95, NT4
 861 //      0x0410      Windows 98
 862 //      0x0500      Windows ME, 2000
 863 //      0x0501      Windows XP
 864 //      0x0502      Windows 2003
 865 //      0x0600      Longhorn
 866 //
 867 // for the other Windows versions 0 is currently returned
 868 enum wxWinVersion
 869 {
 870     wxWinVersion_Unknown = 0,
 871
 872     wxWinVersion_3 = 0x0300,
 873     wxWinVersion_NT3 = wxWinVersion_3,
 874
 875     wxWinVersion_4 = 0x0400,
 876     wxWinVersion_95 = wxWinVersion_4,
 877     wxWinVersion_NT4 = wxWinVersion_4,
 878     wxWinVersion_98 = 0x0410,
 879
 880     wxWinVersion_5 = 0x0500,
 881     wxWinVersion_ME = wxWinVersion_5,
 882     wxWinVersion_NT5 = wxWinVersion_5,
 883     wxWinVersion_2000 = wxWinVersion_5,
 884     wxWinVersion_XP = 0x0501,
 885     wxWinVersion_2003 = 0x0502,
 886
 887     wxWinVersion_6 = 0x0600,
 888     wxWinVersion_Vista = wxWinVersion_6,
 889     wxWinVersion_NT6 = wxWinVersion_6
 890 };
 891
 892 WXDLLIMPEXP_BASE wxWinVersion wxGetWinVersion();
 893
 894 #if wxUSE_GUI
 895
 896 // cursor stuff
 897 extern HCURSOR wxGetCurrentBusyCursor();    // from msw/utils.cpp
 898 extern const wxCursor *wxGetGlobalCursor(); // from msw/cursor.cpp
 899
 900 WXDLLIMPEXP_CORE void wxGetCharSize(WXHWND wnd, int *x, int *y, const wxFont& the_font);
 901 WXDLLIMPEXP_CORE void wxFillLogFont(LOGFONT *logFont, const wxFont *font);
 902 WXDLLIMPEXP_CORE wxFont wxCreateFontFromLogFont(const LOGFONT *logFont);
 903 WXDLLIMPEXP_CORE wxFontEncoding wxGetFontEncFromCharSet(int charset);
 904
 905 WXDLLIMPEXP_CORE void wxSliderEvent(WXHWND control, WXWORD wParam, WXWORD pos);
 906 WXDLLIMPEXP_CORE void wxScrollBarEvent(WXHWND hbar, WXWORD wParam, WXWORD pos);
 907
 908 // Find maximum size of window/rectangle
 909 extern WXDLLIMPEXP_CORE void wxFindMaxSize(WXHWND hwnd, RECT *rect);
 910
 911 // Safely get the window text (i.e. without using fixed size buffer)
 912 extern WXDLLIMPEXP_CORE wxString wxGetWindowText(WXHWND hWnd);
 913
 914 // get the window class name
 915 extern WXDLLIMPEXP_CORE wxString wxGetWindowClass(WXHWND hWnd);
 916
 917 // get the window id (should be unsigned, hence this is not wxWindowID which
 918 // is, for mainly historical reasons, signed)
 919 extern WXDLLIMPEXP_CORE int wxGetWindowId(WXHWND hWnd);
 920
 921 // check if hWnd's WNDPROC is wndProc. Return true if yes, false if they are
 922 // different
 923 extern WXDLLIMPEXP_CORE bool wxCheckWindowWndProc(WXHWND hWnd, WXFARPROC wndProc);
 924
 925 // Does this window style specify any border?
 926 inline bool wxStyleHasBorder(long style)
 927 {
 928     return (style & (wxSIMPLE_BORDER | wxRAISED_BORDER |
 929                      wxSUNKEN_BORDER | wxDOUBLE_BORDER)) != 0;
 930 }
 931
 932 inline long wxGetWindowExStyle(const wxWindowMSW *win)
 933 {
 934     return ::GetWindowLong(GetHwndOf(win), GWL_EXSTYLE);
 935 }
 936
 937 inline bool wxHasWindowExStyle(const wxWindowMSW *win, long style)
 938 {
 939     return (wxGetWindowExStyle(win) & style) != 0;
 940 }
 941
 942 inline long wxSetWindowExStyle(const wxWindowMSW *win, long style)
 943 {
 944     return ::SetWindowLong(GetHwndOf(win), GWL_EXSTYLE, style);
 945 }
 946
 947 // ----------------------------------------------------------------------------
 948 // functions mapping HWND to wxWindow
 949 // ----------------------------------------------------------------------------
 950
 951 // this function simply checks whether the given hwnd corresponds to a wxWindow
 952 // and returns either that window if it does or NULL otherwise
 953 extern WXDLLIMPEXP_CORE wxWindow* wxFindWinFromHandle(HWND hwnd);
 954
 955 // without STRICT WXHWND is the same as HWND anyhow
 956 inline wxWindow* wxFindWinFromHandle(WXHWND hWnd)
 957 {
 958     return wxFindWinFromHandle(static_cast<HWND>(hWnd));
 959 }
 960
 961 // find the window for HWND which is part of some wxWindow, i.e. unlike
 962 // wxFindWinFromHandle() above it will also work for "sub controls" of a
 963 // wxWindow.
 964 //
 965 // returns the wxWindow corresponding to the given HWND or NULL.
 966 extern WXDLLIMPEXP_CORE wxWindow *wxGetWindowFromHWND(WXHWND hwnd);
 967
 968 // Get the size of an icon
 969 extern WXDLLIMPEXP_CORE wxSize wxGetHiconSize(HICON hicon);
 970
 971 // Lines are drawn differently for WinCE and regular WIN32
 972 WXDLLIMPEXP_CORE void wxDrawLine(HDC hdc, int x1, int y1, int x2, int y2);
 973
 974 // fill the client rect of the given window on the provided dc using this brush
 975 inline void wxFillRect(HWND hwnd, HDC hdc, HBRUSH hbr)
 976 {
 977     RECT rc;
 978     ::GetClientRect(hwnd, &rc);
 979     ::FillRect(hdc, &rc, hbr);
 980 }
 981
 982 // ----------------------------------------------------------------------------
 983 // 32/64 bit helpers
 984 // ----------------------------------------------------------------------------
 985
 986 #ifdef __WIN64__
 987
 988 inline void *wxGetWindowProc(HWND hwnd)
 989 {
 990     return (void *)::GetWindowLongPtr(hwnd, GWLP_WNDPROC);
 991 }
 992
 993 inline void *wxGetWindowUserData(HWND hwnd)
 994 {
 995     return (void *)::GetWindowLongPtr(hwnd, GWLP_USERDATA);
 996 }
 997
 998 inline WNDPROC wxSetWindowProc(HWND hwnd, WNDPROC func)
 999 {
1000     return (WNDPROC)::SetWindowLongPtr(hwnd, GWLP_WNDPROC, (LONG_PTR)func);
1001 }
1002
1003 inline void *wxSetWindowUserData(HWND hwnd, void *data)
1004 {
1005     return (void *)::SetWindowLongPtr(hwnd, GWLP_USERDATA, (LONG_PTR)data);
1006 }
1007
1008 #else // __WIN32__
1009
1010 // note that the casts to LONG_PTR here are required even on 32-bit machines
1011 // for the 64-bit warning mode of later versions of MSVC (C4311/4312)
1012 inline WNDPROC wxGetWindowProc(HWND hwnd)
1013 {
1014     return (WNDPROC)(LONG_PTR)::GetWindowLong(hwnd, GWL_WNDPROC);
1015 }
1016
1017 inline void *wxGetWindowUserData(HWND hwnd)
1018 {
1019     return (void *)(LONG_PTR)::GetWindowLong(hwnd, GWL_USERDATA);
1020 }
1021
1022 inline WNDPROC wxSetWindowProc(HWND hwnd, WNDPROC func)
1023 {
1024     return (WNDPROC)(LONG_PTR)::SetWindowLong(hwnd, GWL_WNDPROC, (LONG_PTR)func);
1025 }
1026
1027 inline void *wxSetWindowUserData(HWND hwnd, void *data)
1028 {
1029     return (void *)(LONG_PTR)::SetWindowLong(hwnd, GWL_USERDATA, (LONG_PTR)data);
1030 }
1031
1032 #endif // __WIN64__/__WIN32__
1033
1034 #endif // wxUSE_GUI
1035
1036 #endif // _WX_PRIVATE_H_