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