include/wx/msw/private.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        private.h
   3 // Purpose:     Private declarations: as this header is only included by
   4 //              wxWindows 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 #ifndef STRICT
  18     #define STRICT 1
  19 #endif
  20
  21 #include <windows.h>
  22
  23
  24 #if defined (__WXWINCE__)
  25     #include <wingdi.h>     // RGB, COLORREF
  26     #include <winuser.h>    // Global Namespaces ::GetKeyState, ::GetWindowRect
  27 #endif
  28
  29
  30 #ifdef __WXMICROWIN__
  31     // Extra prototypes and symbols not defined by MicroWindows
  32     #include "wx/msw/microwin.h"
  33 #endif
  34
  35 // undefine conflicting symbols which were defined in windows.h
  36 #include "wx/msw/winundef.h"
  37
  38 // Include fixes for MSLU:
  39 #include "wx/msw/mslu.h"
  40
  41 #include "wx/log.h"
  42
  43 class WXDLLEXPORT wxFont;
  44 class WXDLLEXPORT wxWindow;
  45
  46 // ---------------------------------------------------------------------------
  47 // private constants
  48 // ---------------------------------------------------------------------------
  49
  50 // Conversion
  51 static const double METRIC_CONVERSION_CONSTANT = 0.0393700787;
  52
  53 // Scaling factors for various unit conversions
  54 static const double mm2inches = (METRIC_CONVERSION_CONSTANT);
  55 static const double inches2mm = (1/METRIC_CONVERSION_CONSTANT);
  56
  57 static const double mm2twips = (METRIC_CONVERSION_CONSTANT*1440);
  58 static const double twips2mm = (1/(METRIC_CONVERSION_CONSTANT*1440));
  59
  60 static const double mm2pt = (METRIC_CONVERSION_CONSTANT*72);
  61 static const double pt2mm = (1/(METRIC_CONVERSION_CONSTANT*72));
  62
  63 // ---------------------------------------------------------------------------
  64 // standard icons from the resources
  65 // ---------------------------------------------------------------------------
  66
  67 #if wxUSE_GUI
  68
  69 WXDLLEXPORT_DATA(extern HICON) wxSTD_FRAME_ICON;
  70 WXDLLEXPORT_DATA(extern HICON) wxSTD_MDIPARENTFRAME_ICON;
  71 WXDLLEXPORT_DATA(extern HICON) wxSTD_MDICHILDFRAME_ICON;
  72 WXDLLEXPORT_DATA(extern HICON) wxDEFAULT_FRAME_ICON;
  73 WXDLLEXPORT_DATA(extern HICON) wxDEFAULT_MDIPARENTFRAME_ICON;
  74 WXDLLEXPORT_DATA(extern HICON) wxDEFAULT_MDICHILDFRAME_ICON;
  75 WXDLLEXPORT_DATA(extern HFONT) wxSTATUS_LINE_FONT;
  76
  77 #endif // wxUSE_GUI
  78
  79 // ---------------------------------------------------------------------------
  80 // define things missing from some compilers' headers
  81 // ---------------------------------------------------------------------------
  82
  83 #if defined(__GNUWIN32__) && !wxUSE_NORLANDER_HEADERS
  84 #ifndef ZeroMemory
  85     inline void ZeroMemory(void *buf, size_t len) { memset(buf, 0, len); }
  86 #endif
  87 #endif // old mingw32
  88
  89 // this defines a CASTWNDPROC macro which casts a pointer to the type of a
  90 // window proc
  91 #if defined(__WXWINCE__)
  92     typedef FARPROC WndProcCast;
  93 #elif defined(STRICT) || defined(__GNUC__)
  94     typedef WNDPROC WndProcCast;
  95 #else
  96     typedef FARPROC WndProcCast;
  97 #endif
  98
  99
 100 #define CASTWNDPROC (WndProcCast)
 101
 102 // ---------------------------------------------------------------------------
 103 // some stuff for old Windows versions (FIXME: what does it do here??)
 104 // ---------------------------------------------------------------------------
 105
 106 #if !defined(APIENTRY)  // NT defines APIENTRY, 3.x not
 107     #define APIENTRY FAR PASCAL
 108 #endif
 109
 110 #ifdef __WIN32__
 111     #define _EXPORT
 112 #else
 113     #define _EXPORT _export
 114 #endif
 115
 116 #ifndef __WIN32__
 117     typedef signed short int SHORT;
 118 #endif
 119
 120 #if !defined(__WIN32__)  // 3.x uses FARPROC for dialogs
 121 #ifndef STRICT
 122     #define DLGPROC FARPROC
 123 #endif
 124 #endif
 125
 126 #if wxUSE_PENWIN
 127     WXDLLEXPORT void wxRegisterPenWin();
 128     WXDLLEXPORT void wxCleanUpPenWin();
 129     WXDLLEXPORT void wxEnablePenAppHooks (bool hook);
 130 #endif // wxUSE_PENWIN
 131
 132 #if wxUSE_ITSY_BITSY
 133     #define IBS_HORZCAPTION    0x4000L
 134     #define IBS_VERTCAPTION    0x8000L
 135
 136     UINT    WINAPI ibGetCaptionSize( HWND hWnd  ) ;
 137     UINT    WINAPI ibSetCaptionSize( HWND hWnd, UINT nSize ) ;
 138     LRESULT WINAPI ibDefWindowProc( HWND hWnd, UINT uiMsg, WPARAM wParam, LPARAM lParam ) ;
 139     VOID    WINAPI ibAdjustWindowRect( HWND hWnd, LPRECT lprc ) ;
 140 #endif // wxUSE_ITSY_BITSY
 141
 142 #if wxUSE_CTL3D
 143     #include "wx/msw/ctl3d/ctl3d.h"
 144 #endif // wxUSE_CTL3D
 145
 146 /*
 147  * Decide what window classes we're going to use
 148  * for this combination of CTl3D/FAFA settings
 149  */
 150
 151 #define STATIC_CLASS     wxT("STATIC")
 152 #define STATIC_FLAGS     (SS_LEFT|WS_CHILD|WS_VISIBLE)
 153 #define CHECK_CLASS      wxT("BUTTON")
 154 #define CHECK_FLAGS      (BS_AUTOCHECKBOX|WS_TABSTOP|WS_CHILD)
 155 #define CHECK_IS_FAFA   FALSE
 156 #define RADIO_CLASS      wxT("BUTTON")
 157 #define RADIO_FLAGS      (BS_AUTORADIOBUTTON|WS_CHILD|WS_VISIBLE)
 158 #define RADIO_SIZE       20
 159 #define RADIO_IS_FAFA   FALSE
 160 #define PURE_WINDOWS
 161 #define GROUP_CLASS      wxT("BUTTON")
 162 #define GROUP_FLAGS      (BS_GROUPBOX|WS_CHILD|WS_VISIBLE)
 163
 164 /*
 165 #define BITCHECK_FLAGS   (FB_BITMAP|FC_BUTTONDRAW|FC_DEFAULT|WS_VISIBLE)
 166 #define BITRADIO_FLAGS   (FC_BUTTONDRAW|FB_BITMAP|FC_RADIO|WS_CHILD|WS_VISIBLE)
 167 */
 168
 169 // ---------------------------------------------------------------------------
 170 // misc macros
 171 // ---------------------------------------------------------------------------
 172
 173 #define MEANING_CHARACTER '0'
 174 #define DEFAULT_ITEM_WIDTH  100
 175 #define DEFAULT_ITEM_HEIGHT 80
 176
 177 // Scale font to get edit control height
 178 //#define EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)    (3*(cy)/2)
 179 #define EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)    (cy+8)
 180
 181 // Generic subclass proc, for panel item moving/sizing and intercept
 182 // EDIT control VK_RETURN messages
 183 extern LONG APIENTRY _EXPORT
 184   wxSubclassedGenericControlProc(WXHWND hWnd, WXUINT message, WXWPARAM wParam, WXLPARAM lParam);
 185
 186 // ---------------------------------------------------------------------------
 187 // useful macros and functions
 188 // ---------------------------------------------------------------------------
 189
 190 // a wrapper macro for ZeroMemory()
 191 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
 192 #define wxZeroMemory(obj)   ::ZeroMemory(&obj, sizeof(obj))
 193 #else
 194 #define wxZeroMemory(obj)   memset((void*) & obj, 0, sizeof(obj))
 195 #endif
 196
 197 #if wxUSE_GUI
 198
 199 #include <wx/gdicmn.h>
 200 #include <wx/colour.h>
 201
 202 // make conversion from wxColour and COLORREF a bit less painful
 203 inline COLORREF wxColourToRGB(const wxColour& c)
 204 {
 205     return RGB(c.Red(), c.Green(), c.Blue());
 206 }
 207
 208 inline COLORREF wxColourToPalRGB(const wxColour& c)
 209 {
 210     return PALETTERGB(c.Red(), c.Green(), c.Blue());
 211 }
 212
 213 inline wxColour wxRGBToColour(COLORREF rgb)
 214 {
 215     return wxColour(GetRValue(rgb), GetGValue(rgb), GetBValue(rgb));
 216 }
 217
 218 inline void wxRGBToColour(wxColour& c, COLORREF rgb)
 219 {
 220     c.Set(GetRValue(rgb), GetGValue(rgb), GetBValue(rgb));
 221 }
 222
 223 // get the standard colour map for some standard colours - see comment in this
 224 // function to understand why is it needed and when should it be used
 225 //
 226 // it returns a wxCOLORMAP (can't use COLORMAP itself here as comctl32.dll
 227 // might be not included/available) array of size wxSTD_COLOUR_MAX
 228 //
 229 // NB: if you change these colours, update wxBITMAP_STD_COLOURS in the
 230 //     resources as well: it must have the same number of pixels!
 231 enum wxSTD_COLOUR
 232 {
 233     wxSTD_COL_BTNTEXT,
 234     wxSTD_COL_BTNSHADOW,
 235     wxSTD_COL_BTNFACE,
 236     wxSTD_COL_BTNHIGHLIGHT,
 237     wxSTD_COL_MAX,
 238 };
 239
 240 struct WXDLLEXPORT wxCOLORMAP
 241 {
 242     COLORREF from, to;
 243 };
 244
 245 // this function is implemented in src/msw/window.cpp
 246 extern wxCOLORMAP *wxGetStdColourMap();
 247
 248 // copy Windows RECT to our wxRect
 249 inline void wxCopyRECTToRect(const RECT& r, wxRect& rect)
 250 {
 251     rect.y = r.top;
 252     rect.x = r.left;
 253     rect.width = r.right - r.left;
 254     rect.height = r.bottom - r.top;
 255 }
 256
 257 // translations between HIMETRIC units (which OLE likes) and pixels (which are
 258 // liked by all the others) - implemented in msw/utilsexc.cpp
 259 extern void HIMETRICToPixel(LONG *x, LONG *y);
 260 extern void PixelToHIMETRIC(LONG *x, LONG *y);
 261
 262 // Windows convention of the mask is opposed to the wxWindows one, so we need
 263 // to invert the mask each time we pass one/get one to/from Windows
 264 extern HBITMAP wxInvertMask(HBITMAP hbmpMask, int w = 0, int h = 0);
 265
 266 // Creates an icon or cursor depending from a bitmap
 267 //
 268 // The bitmap must be valid and it should have a mask. If it doesn't, a default
 269 // mask is created using light grey as the transparent colour.
 270 extern HICON wxBitmapToHICON(const wxBitmap& bmp);
 271
 272 // Same requirments as above apply and the bitmap must also have the correct
 273 // size.
 274 extern
 275 HCURSOR wxBitmapToHCURSOR(const wxBitmap& bmp, int hotSpotX, int hotSpotY);
 276
 277 // get (x, y) from DWORD - notice that HI/LOWORD can *not* be used because they
 278 // will fail on system with multiple monitors where the coords may be negative
 279 //
 280 // these macros are standard now (Win98) but some older headers don't have them
 281 #ifndef GET_X_LPARAM
 282     #define GET_X_LPARAM(lp) ((int)(short)LOWORD(lp))
 283     #define GET_Y_LPARAM(lp) ((int)(short)HIWORD(lp))
 284 #endif // GET_X_LPARAM
 285
 286 // get the current state of SHIFT/CTRL keys
 287 inline bool wxIsShiftDown()
 288 {
 289     return (::GetKeyState(VK_SHIFT) & 0x100) != 0;
 290 }
 291
 292 inline bool wxIsCtrlDown()
 293 {
 294     return (::GetKeyState(VK_CONTROL) & 0x100) != 0;
 295 }
 296
 297 // wrapper around GetWindowRect() and GetClientRect() APIs doing error checking
 298 // for Win32
 299 inline RECT wxGetWindowRect(HWND hwnd)
 300 {
 301     RECT rect;
 302 #ifdef __WIN16__
 303     ::GetWindowRect(hwnd, &rect);
 304 #else // Win32
 305     if ( !::GetWindowRect(hwnd, &rect) )
 306     {
 307         wxLogLastError(_T("GetWindowRect"));
 308     }
 309 #endif // Win16/32
 310
 311     return rect;
 312 }
 313
 314 inline RECT wxGetClientRect(HWND hwnd)
 315 {
 316     RECT rect;
 317 #ifdef __WIN16__
 318     ::GetClientRect(hwnd, &rect);
 319 #else // Win32
 320     if ( !::GetClientRect(hwnd, &rect) )
 321     {
 322         wxLogLastError(_T("GetClientRect"));
 323     }
 324 #endif // Win16/32
 325
 326     return rect;
 327 }
 328
 329 // ---------------------------------------------------------------------------
 330 // small helper classes
 331 // ---------------------------------------------------------------------------
 332
 333 // create an instance of this class and use it as the HDC for screen, will
 334 // automatically release the DC going out of scope
 335 class ScreenHDC
 336 {
 337 public:
 338     ScreenHDC() { m_hdc = ::GetDC(NULL);    }
 339    ~ScreenHDC() { ::ReleaseDC(NULL, m_hdc); }
 340
 341     operator HDC() const { return m_hdc; }
 342
 343 private:
 344     HDC m_hdc;
 345
 346     DECLARE_NO_COPY_CLASS(ScreenHDC)
 347 };
 348
 349 // the same as ScreenHDC but for memory DCs: creates the HDC compatible with
 350 // the given one (screen by default) in ctor and destroys it in dtor
 351 class MemoryHDC
 352 {
 353 public:
 354     MemoryHDC(HDC hdc = 0) { m_hdc = ::CreateCompatibleDC(hdc); }
 355    ~MemoryHDC() { ::DeleteDC(m_hdc); }
 356
 357     operator HDC() const { return m_hdc; }
 358
 359 private:
 360     HDC m_hdc;
 361
 362     DECLARE_NO_COPY_CLASS(MemoryHDC)
 363 };
 364
 365 // a class which selects a GDI object into a DC in its ctor and deselects in
 366 // dtor
 367 class SelectInHDC
 368 {
 369 public:
 370     SelectInHDC(HDC hdc, HGDIOBJ hgdiobj) : m_hdc(hdc)
 371         { m_hgdiobj = ::SelectObject(hdc, hgdiobj); }
 372
 373    ~SelectInHDC() { ::SelectObject(m_hdc, m_hgdiobj); }
 374
 375    // return true if the object was successfully selected
 376    operator bool() const { return m_hgdiobj != 0; }
 377
 378 private:
 379    HDC m_hdc;
 380    HGDIOBJ m_hgdiobj;
 381
 382    DECLARE_NO_COPY_CLASS(SelectInHDC)
 383 };
 384
 385 // when working with global pointers (which is unfortunately still necessary
 386 // sometimes, e.g. for clipboard) it is important to unlock them exactly as
 387 // many times as we lock them which just asks for using a "smart lock" class
 388 class GlobalPtr
 389 {
 390 public:
 391     GlobalPtr(HGLOBAL hGlobal) : m_hGlobal(hGlobal)
 392     {
 393         m_ptr = ::GlobalLock(hGlobal);
 394         if ( !m_ptr )
 395         {
 396             wxLogLastError(_T("GlobalLock"));
 397         }
 398     }
 399
 400     ~GlobalPtr()
 401     {
 402         if ( !::GlobalUnlock(m_hGlobal) )
 403         {
 404 #ifdef __WXDEBUG__
 405             // this might happen simply because the block became unlocked
 406             DWORD dwLastError = ::GetLastError();
 407             if ( dwLastError != NO_ERROR )
 408             {
 409                 wxLogApiError(_T("GlobalUnlock"), dwLastError);
 410             }
 411 #endif // __WXDEBUG__
 412         }
 413     }
 414
 415     operator void *() const { return m_ptr; }
 416
 417 private:
 418     HGLOBAL m_hGlobal;
 419     void *m_ptr;
 420
 421     DECLARE_NO_COPY_CLASS(GlobalPtr)
 422 };
 423
 424 // ---------------------------------------------------------------------------
 425 // macros to make casting between WXFOO and FOO a bit easier: the GetFoo()
 426 // returns Foo cast to the Windows type for oruselves, while GetFooOf() takes
 427 // an argument which should be a pointer or reference to the object of the
 428 // corresponding class (this depends on the macro)
 429 // ---------------------------------------------------------------------------
 430
 431 #define GetHwnd()               ((HWND)GetHWND())
 432 #define GetHwndOf(win)          ((HWND)((win)->GetHWND()))
 433 // old name
 434 #define GetWinHwnd              GetHwndOf
 435
 436 #define GetHdc()                ((HDC)GetHDC())
 437 #define GetHdcOf(dc)            ((HDC)(dc).GetHDC())
 438
 439 #define GetHbitmap()            ((HBITMAP)GetHBITMAP())
 440 #define GetHbitmapOf(bmp)       ((HBITMAP)(bmp).GetHBITMAP())
 441
 442 #define GetHicon()              ((HICON)GetHICON())
 443 #define GetHiconOf(icon)        ((HICON)(icon).GetHICON())
 444
 445 #define GetHaccel()             ((HACCEL)GetHACCEL())
 446 #define GetHaccelOf(table)      ((HACCEL)((table).GetHACCEL()))
 447
 448 #define GetHmenu()              ((HMENU)GetHMenu())
 449 #define GetHmenuOf(menu)        ((HMENU)menu->GetHMenu())
 450
 451 #define GetHcursor()            ((HCURSOR)GetHCURSOR())
 452 #define GetHcursorOf(cursor)    ((HCURSOR)(cursor).GetHCURSOR())
 453
 454 #define GetHfont()              ((HFONT)GetHFONT())
 455 #define GetHfontOf(font)        ((HFONT)(font).GetHFONT())
 456
 457 #define GetHpalette()           ((HPALETTE)GetHPALETTE())
 458 #define GetHpaletteOf(pal)      ((HPALETTE)(pal).GetHPALETTE())
 459
 460 #define GetHrgn()               ((HRGN)GetHRGN())
 461 #define GetHrgnOf(rgn)          ((HRGN)(rgn).GetHRGN())
 462
 463 #endif // wxUSE_GUI
 464
 465 // ---------------------------------------------------------------------------
 466 // global data
 467 // ---------------------------------------------------------------------------
 468
 469 WXDLLEXPORT_DATA(extern wxChar*) wxBuffer;
 470
 471 WXDLLEXPORT_DATA(extern HINSTANCE) wxhInstance;
 472
 473 // ---------------------------------------------------------------------------
 474 // global functions
 475 // ---------------------------------------------------------------------------
 476
 477 extern "C"
 478 {
 479     WXDLLEXPORT HINSTANCE wxGetInstance();
 480 }
 481
 482 WXDLLEXPORT void wxSetInstance(HINSTANCE hInst);
 483
 484 #if wxUSE_GUI
 485
 486 // cursor stuff
 487 extern HCURSOR wxGetCurrentBusyCursor();    // from msw/utils.cpp
 488 extern const wxCursor *wxGetGlobalCursor(); // from msw/cursor.cpp
 489
 490 WXDLLEXPORT void wxGetCharSize(WXHWND wnd, int *x, int *y, const wxFont *the_font);
 491 WXDLLEXPORT void wxFillLogFont(LOGFONT *logFont, const wxFont *font);
 492 WXDLLEXPORT wxFont wxCreateFontFromLogFont(const LOGFONT *logFont);
 493 WXDLLEXPORT wxFontEncoding wxGetFontEncFromCharSet(int charset);
 494
 495 WXDLLEXPORT void wxSliderEvent(WXHWND control, WXWORD wParam, WXWORD pos);
 496 WXDLLEXPORT void wxScrollBarEvent(WXHWND hbar, WXWORD wParam, WXWORD pos);
 497
 498 // Find maximum size of window/rectangle
 499 WXDLLEXPORT extern void wxFindMaxSize(WXHWND hwnd, RECT *rect);
 500
 501 // Safely get the window text (i.e. without using fixed size buffer)
 502 WXDLLEXPORT extern wxString wxGetWindowText(WXHWND hWnd);
 503
 504 // get the window class name
 505 WXDLLEXPORT extern wxString wxGetWindowClass(WXHWND hWnd);
 506
 507 // get the window id (should be unsigned, hence this is not wxWindowID which
 508 // is, for mainly historical reasons, signed)
 509 WXDLLEXPORT extern WXWORD wxGetWindowId(WXHWND hWnd);
 510
 511 // check if hWnd's WNDPROC is wndProc. Return true if yes, false if they are
 512 // different
 513 WXDLLEXPORT extern bool wxCheckWindowWndProc(WXHWND hWnd, WXFARPROC wndProc);
 514
 515 // Does this window style specify any border?
 516 inline bool wxStyleHasBorder(long style)
 517 {
 518     return (style & (wxSIMPLE_BORDER | wxRAISED_BORDER |
 519                      wxSUNKEN_BORDER | wxDOUBLE_BORDER)) != 0;
 520 }
 521
 522 // ----------------------------------------------------------------------------
 523 // functions mapping HWND to wxWindow
 524 // ----------------------------------------------------------------------------
 525
 526 // this function simply checks whether the given hWnd corresponds to a wxWindow
 527 // and returns either that window if it does or NULL otherwise
 528 WXDLLEXPORT extern wxWindow* wxFindWinFromHandle(WXHWND hWnd);
 529
 530 // find the window for HWND which is part of some wxWindow, i.e. unlike
 531 // wxFindWinFromHandle() above it will also work for "sub controls" of a
 532 // wxWindow.
 533 //
 534 // returns the wxWindow corresponding to the given HWND or NULL.
 535 WXDLLEXPORT extern wxWindow *wxGetWindowFromHWND(WXHWND hwnd);
 536
 537
 538 // Get the size of an icon
 539 WXDLLEXPORT extern wxSize wxGetHiconSize(HICON hicon);
 540
 541 #endif // wxUSE_GUI
 542
 543 #endif
 544     // _WX_PRIVATE_H_