include/wx/msw/private.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 fixes for MSLU:
  25 #include "wx/msw/mslu.h"
  26
  27 #include "wx/log.h"
  28
  29 class WXDLLEXPORT wxFont;
  30 class WXDLLEXPORT wxWindow;
  31
  32 // ---------------------------------------------------------------------------
  33 // private constants
  34 // ---------------------------------------------------------------------------
  35
  36 // Conversion
  37 static const double METRIC_CONVERSION_CONSTANT = 0.0393700787;
  38
  39 // Scaling factors for various unit conversions
  40 static const double mm2inches = (METRIC_CONVERSION_CONSTANT);
  41 static const double inches2mm = (1/METRIC_CONVERSION_CONSTANT);
  42
  43 static const double mm2twips = (METRIC_CONVERSION_CONSTANT*1440);
  44 static const double twips2mm = (1/(METRIC_CONVERSION_CONSTANT*1440));
  45
  46 static const double mm2pt = (METRIC_CONVERSION_CONSTANT*72);
  47 static const double pt2mm = (1/(METRIC_CONVERSION_CONSTANT*72));
  48
  49 // 260 was taken from windef.h
  50 #ifndef MAX_PATH
  51     #define MAX_PATH  260
  52 #endif
  53
  54 // ---------------------------------------------------------------------------
  55 // standard icons from the resources
  56 // ---------------------------------------------------------------------------
  57
  58 #if wxUSE_GUI
  59
  60 WXDLLEXPORT_DATA(extern HICON) wxSTD_FRAME_ICON;
  61 WXDLLEXPORT_DATA(extern HICON) wxSTD_MDIPARENTFRAME_ICON;
  62 WXDLLEXPORT_DATA(extern HICON) wxSTD_MDICHILDFRAME_ICON;
  63 WXDLLEXPORT_DATA(extern HICON) wxDEFAULT_FRAME_ICON;
  64 WXDLLEXPORT_DATA(extern HICON) wxDEFAULT_MDIPARENTFRAME_ICON;
  65 WXDLLEXPORT_DATA(extern HICON) wxDEFAULT_MDICHILDFRAME_ICON;
  66 WXDLLEXPORT_DATA(extern HFONT) wxSTATUS_LINE_FONT;
  67
  68 #endif // wxUSE_GUI
  69
  70 // ---------------------------------------------------------------------------
  71 // define things missing from some compilers' headers
  72 // ---------------------------------------------------------------------------
  73
  74 #if defined(__WXWINCE__) || (defined(__GNUWIN32__) && !wxUSE_NORLANDER_HEADERS)
  75 #ifndef ZeroMemory
  76     inline void ZeroMemory(void *buf, size_t len) { memset(buf, 0, len); }
  77 #endif
  78 #endif // old mingw32
  79
  80 // this defines a CASTWNDPROC macro which casts a pointer to the type of a
  81 // window proc
  82 #if defined(STRICT) || defined(__GNUC__)
  83     typedef WNDPROC WndProcCast;
  84 #else
  85     typedef FARPROC WndProcCast;
  86 #endif
  87
  88
  89 #define CASTWNDPROC (WndProcCast)
  90
  91
  92
  93 // ---------------------------------------------------------------------------
  94 // some stuff for old Windows versions (FIXME: what does it do here??)
  95 // ---------------------------------------------------------------------------
  96
  97 #if !defined(APIENTRY)  // NT defines APIENTRY, 3.x not
  98     #define APIENTRY FAR PASCAL
  99 #endif
 100
 101 #ifdef __WIN32__
 102     #define _EXPORT
 103 #else
 104     #define _EXPORT _export
 105 #endif
 106
 107 #ifndef __WIN32__
 108     typedef signed short int SHORT;
 109 #endif
 110
 111 #if !defined(__WIN32__)  // 3.x uses FARPROC for dialogs
 112 #ifndef STRICT
 113     #define DLGPROC FARPROC
 114 #endif
 115 #endif
 116
 117 #if wxUSE_PENWIN
 118     WXDLLEXPORT void wxRegisterPenWin();
 119     WXDLLEXPORT void wxCleanUpPenWin();
 120     WXDLLEXPORT void wxEnablePenAppHooks (bool hook);
 121 #endif // wxUSE_PENWIN
 122
 123 #if wxUSE_ITSY_BITSY
 124     #define IBS_HORZCAPTION    0x4000L
 125     #define IBS_VERTCAPTION    0x8000L
 126
 127     UINT    WINAPI ibGetCaptionSize( HWND hWnd  ) ;
 128     UINT    WINAPI ibSetCaptionSize( HWND hWnd, UINT nSize ) ;
 129     LRESULT WINAPI ibDefWindowProc( HWND hWnd, UINT uiMsg, WPARAM wParam, LPARAM lParam ) ;
 130     VOID    WINAPI ibAdjustWindowRect( HWND hWnd, LPRECT lprc ) ;
 131 #endif // wxUSE_ITSY_BITSY
 132
 133 #if wxUSE_CTL3D
 134     #include "wx/msw/ctl3d/ctl3d.h"
 135 #endif // wxUSE_CTL3D
 136
 137 /*
 138  * Decide what window classes we're going to use
 139  * for this combination of CTl3D/FAFA settings
 140  */
 141
 142 #define STATIC_CLASS     wxT("STATIC")
 143 #define STATIC_FLAGS     (SS_LEFT|WS_CHILD|WS_VISIBLE)
 144 #define CHECK_CLASS      wxT("BUTTON")
 145 #define CHECK_FLAGS      (BS_AUTOCHECKBOX|WS_TABSTOP|WS_CHILD)
 146 #define CHECK_IS_FAFA    FALSE
 147 #define RADIO_CLASS      wxT("BUTTON")
 148 #define RADIO_FLAGS      (BS_AUTORADIOBUTTON|WS_CHILD|WS_VISIBLE)
 149 #define RADIO_SIZE       20
 150 #define RADIO_IS_FAFA    FALSE
 151 #define PURE_WINDOWS
 152 #define GROUP_CLASS      wxT("BUTTON")
 153 #define GROUP_FLAGS      (BS_GROUPBOX|WS_CHILD|WS_VISIBLE)
 154
 155 /*
 156 #define BITCHECK_FLAGS   (FB_BITMAP|FC_BUTTONDRAW|FC_DEFAULT|WS_VISIBLE)
 157 #define BITRADIO_FLAGS   (FC_BUTTONDRAW|FB_BITMAP|FC_RADIO|WS_CHILD|WS_VISIBLE)
 158 */
 159
 160 // ---------------------------------------------------------------------------
 161 // misc macros
 162 // ---------------------------------------------------------------------------
 163
 164 #define MEANING_CHARACTER '0'
 165 #define DEFAULT_ITEM_WIDTH  100
 166 #define DEFAULT_ITEM_HEIGHT 80
 167
 168 // Scale font to get edit control height
 169 //#define EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)    (3*(cy)/2)
 170 #define EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)    (cy+8)
 171
 172 // Generic subclass proc, for panel item moving/sizing and intercept
 173 // EDIT control VK_RETURN messages
 174 extern LONG APIENTRY _EXPORT
 175   wxSubclassedGenericControlProc(WXHWND hWnd, WXUINT message, WXWPARAM wParam, WXLPARAM lParam);
 176
 177 // ---------------------------------------------------------------------------
 178 // useful macros and functions
 179 // ---------------------------------------------------------------------------
 180
 181 // a wrapper macro for ZeroMemory()
 182 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
 183 #define wxZeroMemory(obj)   ::ZeroMemory(&obj, sizeof(obj))
 184 #else
 185 #define wxZeroMemory(obj)   memset((void*) & obj, 0, sizeof(obj))
 186 #endif
 187
 188 #if wxUSE_GUI
 189
 190 #include <wx/gdicmn.h>
 191 #include <wx/colour.h>
 192
 193 // make conversion from wxColour and COLORREF a bit less painful
 194 inline COLORREF wxColourToRGB(const wxColour& c)
 195 {
 196     return RGB(c.Red(), c.Green(), c.Blue());
 197 }
 198
 199 inline COLORREF wxColourToPalRGB(const wxColour& c)
 200 {
 201     return PALETTERGB(c.Red(), c.Green(), c.Blue());
 202 }
 203
 204 inline wxColour wxRGBToColour(COLORREF rgb)
 205 {
 206     return wxColour(GetRValue(rgb), GetGValue(rgb), GetBValue(rgb));
 207 }
 208
 209 inline void wxRGBToColour(wxColour& c, COLORREF rgb)
 210 {
 211     c.Set(GetRValue(rgb), GetGValue(rgb), GetBValue(rgb));
 212 }
 213
 214 // get the standard colour map for some standard colours - see comment in this
 215 // function to understand why is it needed and when should it be used
 216 //
 217 // it returns a wxCOLORMAP (can't use COLORMAP itself here as comctl32.dll
 218 // might be not included/available) array of size wxSTD_COLOUR_MAX
 219 //
 220 // NB: if you change these colours, update wxBITMAP_STD_COLOURS in the
 221 //     resources as well: it must have the same number of pixels!
 222 enum wxSTD_COLOUR
 223 {
 224     wxSTD_COL_BTNTEXT,
 225     wxSTD_COL_BTNSHADOW,
 226     wxSTD_COL_BTNFACE,
 227     wxSTD_COL_BTNHIGHLIGHT,
 228     wxSTD_COL_MAX
 229 };
 230
 231 struct WXDLLEXPORT wxCOLORMAP
 232 {
 233     COLORREF from, to;
 234 };
 235
 236 // this function is implemented in src/msw/window.cpp
 237 extern wxCOLORMAP *wxGetStdColourMap();
 238
 239 // copy Windows RECT to our wxRect
 240 inline void wxCopyRECTToRect(const RECT& r, wxRect& rect)
 241 {
 242     rect.y = r.top;
 243     rect.x = r.left;
 244     rect.width = r.right - r.left;
 245     rect.height = r.bottom - r.top;
 246 }
 247
 248 // translations between HIMETRIC units (which OLE likes) and pixels (which are
 249 // liked by all the others) - implemented in msw/utilsexc.cpp
 250 extern void HIMETRICToPixel(LONG *x, LONG *y);
 251 extern void PixelToHIMETRIC(LONG *x, LONG *y);
 252
 253 // Windows convention of the mask is opposed to the wxWidgets one, so we need
 254 // to invert the mask each time we pass one/get one to/from Windows
 255 extern HBITMAP wxInvertMask(HBITMAP hbmpMask, int w = 0, int h = 0);
 256
 257 // Creates an icon or cursor depending from a bitmap
 258 //
 259 // The bitmap must be valid and it should have a mask. If it doesn't, a default
 260 // mask is created using light grey as the transparent colour.
 261 extern HICON wxBitmapToHICON(const wxBitmap& bmp);
 262
 263 // Same requirments as above apply and the bitmap must also have the correct
 264 // size.
 265 extern
 266 HCURSOR wxBitmapToHCURSOR(const wxBitmap& bmp, int hotSpotX, int hotSpotY);
 267
 268 // get (x, y) from DWORD - notice that HI/LOWORD can *not* be used because they
 269 // will fail on system with multiple monitors where the coords may be negative
 270 //
 271 // these macros are standard now (Win98) but some older headers don't have them
 272 #ifndef GET_X_LPARAM
 273     #define GET_X_LPARAM(lp) ((int)(short)LOWORD(lp))
 274     #define GET_Y_LPARAM(lp) ((int)(short)HIWORD(lp))
 275 #endif // GET_X_LPARAM
 276
 277 // get the current state of SHIFT/CTRL keys
 278 inline bool wxIsShiftDown()
 279 {
 280 //    return (::GetKeyState(VK_SHIFT) & 0x100) != 0;
 281     // Returns different negative values on WinME and WinNT,
 282     // so simply test for negative value.
 283     return ::GetKeyState(VK_SHIFT) < 0;
 284 }
 285
 286 inline bool wxIsCtrlDown()
 287 {
 288 //    return (::GetKeyState(VK_CONTROL) & 0x100) != 0;
 289     // Returns different negative values on WinME and WinNT,
 290     // so simply test for negative value.
 291     return ::GetKeyState(VK_CONTROL) < 0;
 292 }
 293
 294 // wrapper around GetWindowRect() and GetClientRect() APIs doing error checking
 295 // for Win32
 296 inline RECT wxGetWindowRect(HWND hwnd)
 297 {
 298     RECT rect;
 299
 300     if ( !::GetWindowRect(hwnd, &rect) )
 301     {
 302         wxLogLastError(_T("GetWindowRect"));
 303     }
 304
 305     return rect;
 306 }
 307
 308 inline RECT wxGetClientRect(HWND hwnd)
 309 {
 310     RECT rect;
 311
 312     if ( !::GetClientRect(hwnd, &rect) )
 313     {
 314         wxLogLastError(_T("GetClientRect"));
 315     }
 316
 317     return rect;
 318 }
 319
 320 // ---------------------------------------------------------------------------
 321 // small helper classes
 322 // ---------------------------------------------------------------------------
 323
 324 // a template to make initializing Windows styructs less painful: it zeroes all
 325 // the struct fields and also sets cbSize member to the correct value (and so
 326 // can be only used with structures which have this member...)
 327 template <class T>
 328 struct WinStruct : public T
 329 {
 330     WinStruct()
 331     {
 332         ::ZeroMemory(this, sizeof(T));
 333
 334         // explicit qualification is required here for this to be valid C++
 335         this->cbSize = sizeof(T);
 336     }
 337 };
 338
 339
 340 // create an instance of this class and use it as the HDC for screen, will
 341 // automatically release the DC going out of scope
 342 class ScreenHDC
 343 {
 344 public:
 345     ScreenHDC() { m_hdc = ::GetDC(NULL);    }
 346    ~ScreenHDC() { ::ReleaseDC(NULL, m_hdc); }
 347
 348     operator HDC() const { return m_hdc; }
 349
 350 private:
 351     HDC m_hdc;
 352
 353     DECLARE_NO_COPY_CLASS(ScreenHDC)
 354 };
 355
 356 // the same as ScreenHDC but for window DCs
 357 class WindowHDC
 358 {
 359 public:
 360     WindowHDC(HWND hwnd) { m_hdc = ::GetDC(m_hwnd = hwnd); }
 361    ~WindowHDC() { ::ReleaseDC(m_hwnd, m_hdc); }
 362
 363     operator HDC() const { return m_hdc; }
 364
 365 private:
 366    HWND m_hwnd;
 367    HDC m_hdc;
 368
 369    DECLARE_NO_COPY_CLASS(WindowHDC)
 370 };
 371
 372 // the same as ScreenHDC but for memory DCs: creates the HDC compatible with
 373 // the given one (screen by default) in ctor and destroys it in dtor
 374 class MemoryHDC
 375 {
 376 public:
 377     MemoryHDC(HDC hdc = 0) { m_hdc = ::CreateCompatibleDC(hdc); }
 378    ~MemoryHDC() { ::DeleteDC(m_hdc); }
 379
 380     operator HDC() const { return m_hdc; }
 381
 382 private:
 383     HDC m_hdc;
 384
 385     DECLARE_NO_COPY_CLASS(MemoryHDC)
 386 };
 387
 388 // a class which selects a GDI object into a DC in its ctor and deselects in
 389 // dtor
 390 class SelectInHDC
 391 {
 392 public:
 393     SelectInHDC(HDC hdc, HGDIOBJ hgdiobj) : m_hdc(hdc)
 394         { m_hgdiobj = ::SelectObject(hdc, hgdiobj); }
 395
 396    ~SelectInHDC() { ::SelectObject(m_hdc, m_hgdiobj); }
 397
 398    // return true if the object was successfully selected
 399    operator bool() const { return m_hgdiobj != 0; }
 400
 401 private:
 402    HDC m_hdc;
 403    HGDIOBJ m_hgdiobj;
 404
 405    DECLARE_NO_COPY_CLASS(SelectInHDC)
 406 };
 407
 408 // a class for temporary bitmaps
 409 class CompatibleBitmap
 410 {
 411 public:
 412     CompatibleBitmap(HDC hdc, int w, int h)
 413     {
 414         m_hbmp = ::CreateCompatibleBitmap(hdc, w, h);
 415     }
 416
 417     ~CompatibleBitmap()
 418     {
 419         if ( m_hbmp )
 420             ::DeleteObject(m_hbmp);
 421     }
 422
 423     operator HBITMAP() const { return m_hbmp; }
 424
 425 private:
 426     HBITMAP m_hbmp;
 427 };
 428
 429 // when working with global pointers (which is unfortunately still necessary
 430 // sometimes, e.g. for clipboard) it is important to unlock them exactly as
 431 // many times as we lock them which just asks for using a "smart lock" class
 432 class GlobalPtr
 433 {
 434 public:
 435     GlobalPtr(HGLOBAL hGlobal) : m_hGlobal(hGlobal)
 436     {
 437         m_ptr = GlobalLock(hGlobal);
 438         if ( !m_ptr )
 439         {
 440             wxLogLastError(_T("GlobalLock"));
 441         }
 442     }
 443
 444     ~GlobalPtr()
 445     {
 446         if ( !GlobalUnlock(m_hGlobal) )
 447         {
 448 #ifdef __WXDEBUG__
 449             // this might happen simply because the block became unlocked
 450             DWORD dwLastError = ::GetLastError();
 451             if ( dwLastError != NO_ERROR )
 452             {
 453                 wxLogApiError(_T("GlobalUnlock"), dwLastError);
 454             }
 455 #endif // __WXDEBUG__
 456         }
 457     }
 458
 459     operator void *() const { return m_ptr; }
 460
 461 private:
 462     HGLOBAL m_hGlobal;
 463     void *m_ptr;
 464
 465     DECLARE_NO_COPY_CLASS(GlobalPtr)
 466 };
 467
 468 // ---------------------------------------------------------------------------
 469 // macros to make casting between WXFOO and FOO a bit easier: the GetFoo()
 470 // returns Foo cast to the Windows type for oruselves, while GetFooOf() takes
 471 // an argument which should be a pointer or reference to the object of the
 472 // corresponding class (this depends on the macro)
 473 // ---------------------------------------------------------------------------
 474
 475 #define GetHwnd()               ((HWND)GetHWND())
 476 #define GetHwndOf(win)          ((HWND)((win)->GetHWND()))
 477 // old name
 478 #define GetWinHwnd              GetHwndOf
 479
 480 #define GetHdc()                ((HDC)GetHDC())
 481 #define GetHdcOf(dc)            ((HDC)(dc).GetHDC())
 482
 483 #define GetHbitmap()            ((HBITMAP)GetHBITMAP())
 484 #define GetHbitmapOf(bmp)       ((HBITMAP)(bmp).GetHBITMAP())
 485
 486 #define GetHicon()              ((HICON)GetHICON())
 487 #define GetHiconOf(icon)        ((HICON)(icon).GetHICON())
 488
 489 #define GetHaccel()             ((HACCEL)GetHACCEL())
 490 #define GetHaccelOf(table)      ((HACCEL)((table).GetHACCEL()))
 491
 492 #define GetHbrush()             ((HPEN)GetResourceHandle())
 493 #define GetHbrushOf(brush)      ((HPEN)(brush).GetResourceHandle())
 494
 495 #define GetHmenu()              ((HMENU)GetHMenu())
 496 #define GetHmenuOf(menu)        ((HMENU)menu->GetHMenu())
 497
 498 #define GetHcursor()            ((HCURSOR)GetHCURSOR())
 499 #define GetHcursorOf(cursor)    ((HCURSOR)(cursor).GetHCURSOR())
 500
 501 #define GetHfont()              ((HFONT)GetHFONT())
 502 #define GetHfontOf(font)        ((HFONT)(font).GetHFONT())
 503
 504 #define GetHpalette()           ((HPALETTE)GetHPALETTE())
 505 #define GetHpaletteOf(pal)      ((HPALETTE)(pal).GetHPALETTE())
 506
 507 #define GetHpen()               ((HPEN)GetResourceHandle())
 508 #define GetHpenOf(pen)          ((HPEN)(pen).GetResourceHandle())
 509
 510 #define GetHrgn()               ((HRGN)GetHRGN())
 511 #define GetHrgnOf(rgn)          ((HRGN)(rgn).GetHRGN())
 512
 513 #endif // wxUSE_GUI
 514
 515 // ---------------------------------------------------------------------------
 516 // global data
 517 // ---------------------------------------------------------------------------
 518
 519 WXDLLIMPEXP_DATA_BASE(extern HINSTANCE) wxhInstance;
 520
 521 // ---------------------------------------------------------------------------
 522 // global functions
 523 // ---------------------------------------------------------------------------
 524
 525 extern "C"
 526 {
 527     WXDLLIMPEXP_BASE HINSTANCE wxGetInstance();
 528 }
 529
 530 WXDLLIMPEXP_BASE void wxSetInstance(HINSTANCE hInst);
 531
 532 // return the full name of the program file
 533 inline wxString wxGetFullModuleName()
 534 {
 535     wxString fullname;
 536     if ( !::GetModuleFileName
 537             (
 538                 (HMODULE)wxGetInstance(),
 539                 wxStringBuffer(fullname, MAX_PATH),
 540                 MAX_PATH
 541             ) )
 542     {
 543         wxLogLastError(_T("GetModuleFileName"));
 544     }
 545
 546     return fullname;
 547 }
 548
 549 #if wxUSE_GUI
 550
 551 // cursor stuff
 552 extern HCURSOR wxGetCurrentBusyCursor();    // from msw/utils.cpp
 553 extern const wxCursor *wxGetGlobalCursor(); // from msw/cursor.cpp
 554
 555 WXDLLEXPORT void wxGetCharSize(WXHWND wnd, int *x, int *y, const wxFont& the_font);
 556 WXDLLEXPORT void wxFillLogFont(LOGFONT *logFont, const wxFont *font);
 557 WXDLLEXPORT wxFont wxCreateFontFromLogFont(const LOGFONT *logFont);
 558 WXDLLEXPORT wxFontEncoding wxGetFontEncFromCharSet(int charset);
 559
 560 WXDLLEXPORT void wxSliderEvent(WXHWND control, WXWORD wParam, WXWORD pos);
 561 WXDLLEXPORT void wxScrollBarEvent(WXHWND hbar, WXWORD wParam, WXWORD pos);
 562
 563 // Find maximum size of window/rectangle
 564 WXDLLEXPORT extern void wxFindMaxSize(WXHWND hwnd, RECT *rect);
 565
 566 // Safely get the window text (i.e. without using fixed size buffer)
 567 WXDLLEXPORT extern wxString wxGetWindowText(WXHWND hWnd);
 568
 569 // get the window class name
 570 WXDLLEXPORT extern wxString wxGetWindowClass(WXHWND hWnd);
 571
 572 // get the window id (should be unsigned, hence this is not wxWindowID which
 573 // is, for mainly historical reasons, signed)
 574 WXDLLEXPORT extern WXWORD wxGetWindowId(WXHWND hWnd);
 575
 576 // check if hWnd's WNDPROC is wndProc. Return true if yes, false if they are
 577 // different
 578 WXDLLEXPORT extern bool wxCheckWindowWndProc(WXHWND hWnd, WXFARPROC wndProc);
 579
 580 // Does this window style specify any border?
 581 inline bool wxStyleHasBorder(long style)
 582 {
 583     return (style & (wxSIMPLE_BORDER | wxRAISED_BORDER |
 584                      wxSUNKEN_BORDER | wxDOUBLE_BORDER)) != 0;
 585 }
 586
 587 // ----------------------------------------------------------------------------
 588 // functions mapping HWND to wxWindow
 589 // ----------------------------------------------------------------------------
 590
 591 // this function simply checks whether the given hWnd corresponds to a wxWindow
 592 // and returns either that window if it does or NULL otherwise
 593 WXDLLEXPORT extern wxWindow* wxFindWinFromHandle(WXHWND hWnd);
 594
 595 // find the window for HWND which is part of some wxWindow, i.e. unlike
 596 // wxFindWinFromHandle() above it will also work for "sub controls" of a
 597 // wxWindow.
 598 //
 599 // returns the wxWindow corresponding to the given HWND or NULL.
 600 WXDLLEXPORT extern wxWindow *wxGetWindowFromHWND(WXHWND hwnd);
 601
 602 // Get the size of an icon
 603 WXDLLEXPORT extern wxSize wxGetHiconSize(HICON hicon);
 604
 605 // Lines are drawn differently for WinCE and regular WIN32
 606 WXDLLEXPORT void wxDrawLine(HDC hdc, int x1, int y1, int x2, int y2);
 607
 608 // ----------------------------------------------------------------------------
 609 // 32/64 bit helpers
 610 // ----------------------------------------------------------------------------
 611
 612 #ifdef __WIN64__
 613
 614 inline void *wxGetWindowProc(HWND hwnd)
 615 {
 616     return (void *)::GetWindowLongPtr(hwnd, GWLP_WNDPROC);
 617 }
 618
 619 inline void *wxGetWindowUserData(HWND hwnd)
 620 {
 621     return (void *)::GetWindowLongPtr(hwnd, GWLP_USERDATA);
 622 }
 623
 624 inline WNDPROC wxSetWindowProc(HWND hwnd, WNDPROC func)
 625 {
 626     return (WNDPROC)::SetWindowLongPtr(hwnd, GWLP_WNDPROC, (LONG_PTR)func);
 627 }
 628
 629 inline void *wxSetWindowUserData(HWND hwnd, void *data)
 630 {
 631     return (void *)::SetWindowLongPtr(hwnd, GWLP_USERDATA, (LONG_PTR)data);
 632 }
 633
 634 #else // __WIN32__
 635
 636 #ifdef __VISUALC__
 637     // strangely enough, VC++ 7.1 gives warnings about 32 -> 64 bit conversions
 638     // in the functions below, even in spite of the explicit casts
 639     #pragma warning(disable:4311)
 640     #pragma warning(disable:4312)
 641 #endif
 642
 643 inline void *wxGetWindowProc(HWND hwnd)
 644 {
 645     return (void *)::GetWindowLong(hwnd, GWL_WNDPROC);
 646 }
 647
 648 inline void *wxGetWindowUserData(HWND hwnd)
 649 {
 650     return (void *)::GetWindowLong(hwnd, GWL_USERDATA);
 651 }
 652
 653 inline WNDPROC wxSetWindowProc(HWND hwnd, WNDPROC func)
 654 {
 655     return (WNDPROC)::SetWindowLong(hwnd, GWL_WNDPROC, (LONG)func);
 656 }
 657
 658 inline void *wxSetWindowUserData(HWND hwnd, void *data)
 659 {
 660     return (void *)::SetWindowLong(hwnd, GWL_USERDATA, (LONG)data);
 661 }
 662
 663 #ifdef __VISUALC__
 664     #pragma warning(default:4311)
 665     #pragma warning(default:4312)
 666 #endif
 667
 668 #endif // __WIN64__/__WIN32__
 669
 670 #endif // wxUSE_GUI
 671
 672 #endif
 673     // _WX_PRIVATE_H_