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 #ifdef __WXMICROWIN__
  24     // Extra prototypes and symbols not defined by MicroWindows
  25     #include "wx/msw/microwin.h"
  26 #endif
  27
  28 // undefine conflicting symbols which were defined in windows.h
  29 #include "wx/msw/winundef.h"
  30
  31 #include "wx/log.h"
  32
  33 class WXDLLEXPORT wxFont;
  34 class WXDLLEXPORT wxWindow;
  35
  36 // ---------------------------------------------------------------------------
  37 // private constants
  38 // ---------------------------------------------------------------------------
  39
  40 // Conversion
  41 static const double METRIC_CONVERSION_CONSTANT = 0.0393700787;
  42
  43 // Scaling factors for various unit conversions
  44 static const double mm2inches = (METRIC_CONVERSION_CONSTANT);
  45 static const double inches2mm = (1/METRIC_CONVERSION_CONSTANT);
  46
  47 static const double mm2twips = (METRIC_CONVERSION_CONSTANT*1440);
  48 static const double twips2mm = (1/(METRIC_CONVERSION_CONSTANT*1440));
  49
  50 static const double mm2pt = (METRIC_CONVERSION_CONSTANT*72);
  51 static const double pt2mm = (1/(METRIC_CONVERSION_CONSTANT*72));
  52
  53 // ---------------------------------------------------------------------------
  54 // standard icons from the resources
  55 // ---------------------------------------------------------------------------
  56
  57 #if wxUSE_GUI
  58
  59 WXDLLEXPORT_DATA(extern HICON) wxSTD_FRAME_ICON;
  60 WXDLLEXPORT_DATA(extern HICON) wxSTD_MDIPARENTFRAME_ICON;
  61 WXDLLEXPORT_DATA(extern HICON) wxSTD_MDICHILDFRAME_ICON;
  62 WXDLLEXPORT_DATA(extern HICON) wxDEFAULT_FRAME_ICON;
  63 WXDLLEXPORT_DATA(extern HICON) wxDEFAULT_MDIPARENTFRAME_ICON;
  64 WXDLLEXPORT_DATA(extern HICON) wxDEFAULT_MDICHILDFRAME_ICON;
  65 WXDLLEXPORT_DATA(extern HFONT) wxSTATUS_LINE_FONT;
  66
  67 #endif // wxUSE_GUI
  68
  69 // ---------------------------------------------------------------------------
  70 // define things missing from some compilers' headers
  71 // ---------------------------------------------------------------------------
  72
  73 #if defined(__GNUWIN32__) && !wxUSE_NORLANDER_HEADERS
  74 #ifndef ZeroMemory
  75     inline void ZeroMemory(void *buf, size_t len) { memset(buf, 0, len); }
  76 #endif
  77 #endif // old mingw32
  78
  79 // this defines a CASTWNDPROC macro which casts a pointer to the type of a
  80 // window proc
  81 #if defined(STRICT) || defined(__GNUC__)
  82     typedef WNDPROC WndProcCast;
  83 #else
  84     typedef FARPROC WndProcCast;
  85 #endif
  86
  87 #define CASTWNDPROC (WndProcCast)
  88
  89 // ---------------------------------------------------------------------------
  90 // some stuff for old Windows versions (FIXME: what does it do here??)
  91 // ---------------------------------------------------------------------------
  92
  93 #if !defined(APIENTRY)  // NT defines APIENTRY, 3.x not
  94     #define APIENTRY FAR PASCAL
  95 #endif
  96
  97 #ifdef __WIN32__
  98     #define _EXPORT
  99 #else
 100     #define _EXPORT _export
 101 #endif
 102
 103 #ifndef __WIN32__
 104     typedef signed short int SHORT;
 105 #endif
 106
 107 #if !defined(__WIN32__)  // 3.x uses FARPROC for dialogs
 108 #ifndef STRICT
 109     #define DLGPROC FARPROC
 110 #endif
 111 #endif
 112
 113 #if wxUSE_PENWIN
 114     WXDLLEXPORT void wxRegisterPenWin();
 115     WXDLLEXPORT void wxCleanUpPenWin();
 116     WXDLLEXPORT void wxEnablePenAppHooks (bool hook);
 117 #endif // wxUSE_PENWIN
 118
 119 #if wxUSE_ITSY_BITSY
 120     #define IBS_HORZCAPTION    0x4000L
 121     #define IBS_VERTCAPTION    0x8000L
 122
 123     UINT    WINAPI ibGetCaptionSize( HWND hWnd  ) ;
 124     UINT    WINAPI ibSetCaptionSize( HWND hWnd, UINT nSize ) ;
 125     LRESULT WINAPI ibDefWindowProc( HWND hWnd, UINT uiMsg, WPARAM wParam, LPARAM lParam ) ;
 126     VOID    WINAPI ibAdjustWindowRect( HWND hWnd, LPRECT lprc ) ;
 127 #endif // wxUSE_ITSY_BITSY
 128
 129 #if wxUSE_CTL3D
 130     #include "wx/msw/ctl3d/ctl3d.h"
 131 #endif // wxUSE_CTL3D
 132
 133 /*
 134  * Decide what window classes we're going to use
 135  * for this combination of CTl3D/FAFA settings
 136  */
 137
 138 #define STATIC_CLASS     wxT("STATIC")
 139 #define STATIC_FLAGS     (SS_LEFT|WS_CHILD|WS_VISIBLE)
 140 #define CHECK_CLASS      wxT("BUTTON")
 141 #define CHECK_FLAGS      (BS_AUTOCHECKBOX|WS_TABSTOP|WS_CHILD)
 142 #define CHECK_IS_FAFA   FALSE
 143 #define RADIO_CLASS      wxT("BUTTON")
 144 #define RADIO_FLAGS      (BS_AUTORADIOBUTTON|WS_CHILD|WS_VISIBLE)
 145 #define RADIO_SIZE       20
 146 #define RADIO_IS_FAFA   FALSE
 147 #define PURE_WINDOWS
 148 #define GROUP_CLASS      wxT("BUTTON")
 149 #define GROUP_FLAGS      (BS_GROUPBOX|WS_CHILD|WS_VISIBLE)
 150
 151 /*
 152 #define BITCHECK_FLAGS   (FB_BITMAP|FC_BUTTONDRAW|FC_DEFAULT|WS_VISIBLE)
 153 #define BITRADIO_FLAGS   (FC_BUTTONDRAW|FB_BITMAP|FC_RADIO|WS_CHILD|WS_VISIBLE)
 154 */
 155
 156 // ---------------------------------------------------------------------------
 157 // misc macros
 158 // ---------------------------------------------------------------------------
 159
 160 #define MEANING_CHARACTER '0'
 161 #define DEFAULT_ITEM_WIDTH  100
 162 #define DEFAULT_ITEM_HEIGHT 80
 163
 164 // Scale font to get edit control height
 165 //#define EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)    (3*(cy)/2)
 166 #define EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)    (cy+8)
 167
 168 // Generic subclass proc, for panel item moving/sizing and intercept
 169 // EDIT control VK_RETURN messages
 170 extern LONG APIENTRY _EXPORT
 171   wxSubclassedGenericControlProc(WXHWND hWnd, WXUINT message, WXWPARAM wParam, WXLPARAM lParam);
 172
 173 // ---------------------------------------------------------------------------
 174 // constants which might miss from some compilers' headers
 175 // ---------------------------------------------------------------------------
 176
 177 #if !defined(__WIN32__) && !defined(WS_EX_CLIENTEDGE)
 178     #define WS_EX_CLIENTEDGE 0
 179 #endif
 180
 181 #if defined(__WIN32__) && !defined(WS_EX_CLIENTEDGE)
 182     #define WS_EX_CLIENTEDGE 0x00000200L
 183 #endif
 184
 185 #ifndef ENDSESSION_LOGOFF
 186     #define ENDSESSION_LOGOFF    0x80000000
 187 #endif
 188
 189 // ---------------------------------------------------------------------------
 190 // useful macros and functions
 191 // ---------------------------------------------------------------------------
 192
 193 // a wrapper macro for ZeroMemory()
 194 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
 195 #define wxZeroMemory(obj)   ::ZeroMemory(&obj, sizeof(obj))
 196 #else
 197 #define wxZeroMemory(obj)   memset((void*) & obj, 0, sizeof(obj))
 198 #endif
 199
 200 #if wxUSE_GUI
 201
 202 #include <wx/gdicmn.h>
 203
 204 // make conversion from wxColour and COLORREF a bit less painful
 205 inline COLORREF wxColourToRGB(const wxColour& c)
 206 {
 207     return PALETTERGB(c.Red(), c.Green(), c.Blue());
 208 }
 209
 210 inline void wxRGBToColour(wxColour& c, COLORREF rgb)
 211 {
 212     c.Set(GetRValue(rgb), GetGValue(rgb), GetBValue(rgb));
 213 }
 214
 215 // copy Windows RECT to our wxRect
 216 inline void wxCopyRECTToRect(const RECT& r, wxRect& rect)
 217 {
 218     rect.y = r.top;
 219     rect.x = r.left;
 220     rect.width = r.right - r.left;
 221     rect.height = r.bottom - r.top;
 222 }
 223
 224 // translations between HIMETRIC units (which OLE likes) and pixels (which are
 225 // liked by all the others) - implemented in msw/utilsexc.cpp
 226 extern void HIMETRICToPixel(LONG *x, LONG *y);
 227 extern void PixelToHIMETRIC(LONG *x, LONG *y);
 228
 229 // Windows convention of the mask is opposed to the wxWindows one, so we need
 230 // to invert the mask each time we pass one/get one to/from Windows
 231 extern HBITMAP wxInvertMask(HBITMAP hbmpMask, int w = 0, int h = 0);
 232
 233 // get (x, y) from DWORD - notice that HI/LOWORD can *not* be used because they
 234 // will fail on system with multiple monitors where the coords may be negative
 235 //
 236 // these macros are standard now (Win98) but some older headers don't have them
 237 #ifndef GET_X_LPARAM
 238     #define GET_X_LPARAM(lp) ((int)(short)LOWORD(lp))
 239     #define GET_Y_LPARAM(lp) ((int)(short)HIWORD(lp))
 240 #endif // GET_X_LPARAM
 241
 242 // get the current state of SHIFT/CTRL keys
 243 inline bool wxIsShiftDown()
 244 {
 245     return (::GetKeyState(VK_SHIFT) & 0x100) != 0;
 246 }
 247
 248 inline bool wxIsCtrlDown()
 249 {
 250     return (::GetKeyState(VK_CONTROL) & 0x100) != 0;
 251 }
 252
 253 // wrapper around GetWindowRect() and GetClientRect() APIs doing error checking
 254 // for Win32
 255 inline RECT wxGetWindowRect(HWND hwnd)
 256 {
 257     RECT rect;
 258 #ifdef __WIN16__
 259     ::GetWindowRect(hwnd, &rect);
 260 #else // Win32
 261     if ( !::GetWindowRect(hwnd, &rect) )
 262     {
 263         wxLogLastError(_T("GetWindowRect"));
 264     }
 265 #endif // Win16/32
 266
 267     return rect;
 268 }
 269
 270 inline RECT wxGetClientRect(HWND hwnd)
 271 {
 272     RECT rect;
 273 #ifdef __WIN16__
 274     ::GetClientRect(hwnd, &rect);
 275 #else // Win32
 276     if ( !::GetClientRect(hwnd, &rect) )
 277     {
 278         wxLogLastError(_T("GetClientRect"));
 279     }
 280 #endif // Win16/32
 281
 282     return rect;
 283 }
 284
 285 // ---------------------------------------------------------------------------
 286 // small helper classes
 287 // ---------------------------------------------------------------------------
 288
 289 // create an instance of this class and use it as the HDC for screen, will
 290 // automatically release the DC going out of scope
 291 class ScreenHDC
 292 {
 293 public:
 294     ScreenHDC() { m_hdc = ::GetDC(NULL);    }
 295    ~ScreenHDC() { ::ReleaseDC(NULL, m_hdc); }
 296
 297     operator HDC() const { return m_hdc; }
 298
 299 private:
 300     HDC m_hdc;
 301 };
 302
 303 // the same as ScreenHDC but for memory DCs: creates the HDC in ctor and
 304 // destroys it in dtor
 305 class MemoryHDC
 306 {
 307 public:
 308     MemoryHDC() { m_hdc = ::CreateCompatibleDC(NULL); }
 309    ~MemoryHDC() { ::DeleteObject(m_hdc);              }
 310
 311     operator HDC() const { return m_hdc; }
 312
 313 private:
 314     HDC m_hdc;
 315 };
 316
 317 // a class which selects a GDI object into a DC in its ctor and deselects in
 318 // dtor
 319 class SelectInHDC
 320 {
 321 public:
 322     SelectInHDC(HDC hdc, HGDIOBJ hgdiobj) : m_hdc(hdc)
 323         { m_hgdiobj = ::SelectObject(hdc, hgdiobj); }
 324
 325    ~SelectInHDC() { ::SelectObject(m_hdc, m_hgdiobj); }
 326
 327    // return true if the object was successfully selected
 328    operator bool() const { return m_hgdiobj != 0; }
 329
 330 private:
 331    HDC m_hdc;
 332    HGDIOBJ m_hgdiobj;
 333 };
 334
 335 // ---------------------------------------------------------------------------
 336 // macros to make casting between WXFOO and FOO a bit easier: the GetFoo()
 337 // returns Foo cast to the Windows type for oruselves, while GetFooOf() takes
 338 // an argument which should be a pointer or reference to the object of the
 339 // corresponding class (this depends on the macro)
 340 // ---------------------------------------------------------------------------
 341
 342 #define GetHwnd()               ((HWND)GetHWND())
 343 #define GetHwndOf(win)          ((HWND)((win)->GetHWND()))
 344 // old name
 345 #define GetWinHwnd              GetHwndOf
 346
 347 #define GetHdc()                ((HDC)GetHDC())
 348 #define GetHdcOf(dc)            ((HDC)(dc).GetHDC())
 349
 350 #define GetHbitmap()            ((HBITMAP)GetHBITMAP())
 351 #define GetHbitmapOf(bmp)       ((HBITMAP)(bmp).GetHBITMAP())
 352
 353 #define GetHicon()              ((HICON)GetHICON())
 354 #define GetHiconOf(icon)        ((HICON)(icon).GetHICON())
 355
 356 #define GetHaccel()             ((HACCEL)GetHACCEL())
 357 #define GetHaccelOf(table)      ((HACCEL)((table).GetHACCEL()))
 358
 359 #define GetHmenu()              ((HMENU)GetHMenu())
 360 #define GetHmenuOf(menu)        ((HMENU)menu->GetHMenu())
 361
 362 #define GetHcursor()            ((HCURSOR)GetHCURSOR())
 363 #define GetHcursorOf(cursor)    ((HCURSOR)(cursor).GetHCURSOR())
 364
 365 #define GetHfont()              ((HFONT)GetHFONT())
 366 #define GetHfontOf(font)        ((HFONT)(font).GetHFONT())
 367
 368 #define GetHpalette()           ((HPALETTE)GetHPALETTE())
 369 #define GetHpaletteOf(pal)      ((HPALETTE)(pal)->GetHPALETTE())
 370
 371 #define GetHrgn()               ((HRGN)GetHRGN())
 372 #define GetHrgnOf(rgn)          ((HRGN)(rgn).GetHRGN())
 373
 374 #endif // wxUSE_GUI
 375
 376 // ---------------------------------------------------------------------------
 377 // global data
 378 // ---------------------------------------------------------------------------
 379
 380 WXDLLEXPORT_DATA(extern wxChar*) wxBuffer;
 381
 382 WXDLLEXPORT_DATA(extern HINSTANCE) wxhInstance;
 383
 384 // ---------------------------------------------------------------------------
 385 // global functions
 386 // ---------------------------------------------------------------------------
 387
 388 extern "C"
 389 {
 390     WXDLLEXPORT HINSTANCE wxGetInstance();
 391 }
 392
 393 WXDLLEXPORT void wxSetInstance(HINSTANCE hInst);
 394
 395 #if wxUSE_GUI
 396
 397 // cursor stuff
 398 extern HCURSOR wxGetCurrentBusyCursor();    // from msw/utils.cpp
 399 extern const wxCursor *wxGetGlobalCursor(); // from msw/cursor.cpp
 400
 401 WXDLLEXPORT wxWindow* wxFindWinFromHandle(WXHWND hWnd);
 402
 403 WXDLLEXPORT void wxGetCharSize(WXHWND wnd, int *x, int *y, const wxFont *the_font);
 404 WXDLLEXPORT void wxFillLogFont(LOGFONT *logFont, const wxFont *font);
 405 WXDLLEXPORT wxFont wxCreateFontFromLogFont(const LOGFONT *logFont);
 406 WXDLLEXPORT wxFontEncoding wxGetFontEncFromCharSet(int charset);
 407
 408 WXDLLEXPORT void wxSliderEvent(WXHWND control, WXWORD wParam, WXWORD pos);
 409 WXDLLEXPORT void wxScrollBarEvent(WXHWND hbar, WXWORD wParam, WXWORD pos);
 410
 411 // Find maximum size of window/rectangle
 412 WXDLLEXPORT extern void wxFindMaxSize(WXHWND hwnd, RECT *rect);
 413
 414 WXDLLEXPORT wxWindow* wxFindControlFromHandle(WXHWND hWnd);
 415 WXDLLEXPORT void wxAddControlHandle(WXHWND hWnd, wxWindow *item);
 416
 417 // Safely get the window text (i.e. without using fixed size buffer)
 418 WXDLLEXPORT extern wxString wxGetWindowText(WXHWND hWnd);
 419
 420 // get the window class name
 421 WXDLLEXPORT extern wxString wxGetWindowClass(WXHWND hWnd);
 422
 423 // get the window id (should be unsigned, hence this is not wxWindowID which
 424 // is, for mainly historical reasons, signed)
 425 WXDLLEXPORT extern WXWORD wxGetWindowId(WXHWND hWnd);
 426
 427 // check if hWnd's WNDPROC is wndProc. Return true if yes, false if they are different
 428 extern bool wxCheckWindowWndProc(WXHWND hWnd, WXFARPROC wndProc);
 429
 430 // Does this window style specify any border?
 431 inline bool wxStyleHasBorder(long style)
 432 {
 433     return (style & (wxSIMPLE_BORDER | wxRAISED_BORDER |
 434                      wxSUNKEN_BORDER | wxDOUBLE_BORDER)) != 0;
 435 }
 436
 437 // find the window for HWND which is part of some wxWindow, returns just the
 438 // corresponding wxWindow for HWND which just is one
 439 //
 440 // may return NULL
 441 extern wxWindow *wxGetWindowFromHWND(WXHWND hwnd);
 442
 443 #endif // wxUSE_GUI
 444
 445 #endif
 446     // _WX_PRIVATE_H_