include/wx/msw/app.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        app.h
   3 // Purpose:     wxApp class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_APP_H_
  13 #define _WX_APP_H_
  14
  15 #include "wx/event.h"
  16 #include "wx/icon.h"
  17
  18 class WXDLLIMPEXP_FWD_CORE wxFrame;
  19 class WXDLLIMPEXP_FWD_CORE wxWindow;
  20 class WXDLLIMPEXP_FWD_CORE wxApp;
  21 class WXDLLIMPEXP_FWD_CORE wxKeyEvent;
  22 class WXDLLIMPEXP_FWD_BASE wxLog;
  23
  24 // Represents the application. Derive OnInit and declare
  25 // a new App object to start application
  26 class WXDLLIMPEXP_CORE wxApp : public wxAppBase
  27 {
  28     DECLARE_DYNAMIC_CLASS(wxApp)
  29
  30 public:
  31     wxApp();
  32     virtual ~wxApp();
  33
  34     // override base class (pure) virtuals
  35     virtual bool Initialize(int& argc, wxChar **argv);
  36     virtual void CleanUp();
  37
  38     virtual bool Yield(bool onlyIfNeeded = false);
  39     virtual void WakeUpIdle();
  40
  41     virtual void SetPrintMode(int mode) { m_printMode = mode; }
  42     virtual int GetPrintMode() const { return m_printMode; }
  43
  44     // implementation only
  45     void OnIdle(wxIdleEvent& event);
  46     void OnEndSession(wxCloseEvent& event);
  47     void OnQueryEndSession(wxCloseEvent& event);
  48
  49 #if wxUSE_EXCEPTIONS
  50     virtual bool OnExceptionInMainLoop();
  51 #endif // wxUSE_EXCEPTIONS
  52
  53 protected:
  54     int    m_printMode; // wxPRINT_WINDOWS, wxPRINT_POSTSCRIPT
  55
  56 public:
  57     // Implementation
  58     static bool RegisterWindowClasses();
  59     static bool UnregisterWindowClasses();
  60
  61 #if wxUSE_RICHEDIT
  62     // initialize the richedit DLL of (at least) given version, return true if
  63     // ok (Win95 has version 1, Win98/NT4 has 1 and 2, W2K has 3)
  64     static bool InitRichEdit(int version = 2);
  65 #endif // wxUSE_RICHEDIT
  66
  67     // returns 400, 470, 471 for comctl32.dll 4.00, 4.70, 4.71 or 0 if it
  68     // wasn't found at all
  69     static int GetComCtl32Version();
  70
  71     // the same for shell32.dll: returns 400, 471, 500, 600, ... (4.70 not
  72     // currently detected)
  73     static int GetShell32Version();
  74
  75     // the SW_XXX value to be used for the frames opened by the application
  76     // (currently seems unused which is a bug -- TODO)
  77     static int m_nCmdShow;
  78
  79 protected:
  80     DECLARE_EVENT_TABLE()
  81     DECLARE_NO_COPY_CLASS(wxApp)
  82 };
  83
  84 #ifdef __WXWINCE__
  85
  86 // under CE provide a dummy implementation of GetComCtl32Version() returning
  87 // the value passing all ">= 470" tests (which are the only ones used in our
  88 // code currently) as commctrl.dll under CE 2.0 and later support comctl32.dll
  89 // functionality
  90 inline int wxApp::GetComCtl32Version()
  91 {
  92     return 471;
  93 }
  94
  95 // this is not currently used at all under CE so it's not really clear what do
  96 // we need to return from here
  97 inline int wxApp::GetShell32Version()
  98 {
  99     return 0;
 100 }
 101
 102 #endif // __WXWINCE__
 103
 104 // ----------------------------------------------------------------------------
 105 // MSW-specific wxEntry() overload and IMPLEMENT_WXWIN_MAIN definition
 106 // ----------------------------------------------------------------------------
 107
 108 // we need HINSTANCE declaration to define WinMain()
 109 #include "wx/msw/wrapwin.h"
 110
 111 #ifndef SW_SHOWNORMAL
 112     #define SW_SHOWNORMAL 1
 113 #endif
 114
 115 // WinMain() is always ANSI, even in Unicode build, under normal Windows
 116 // but is always Unicode under CE
 117 #ifdef __WXWINCE__
 118     typedef wchar_t *wxCmdLineArgType;
 119 #else
 120     typedef char *wxCmdLineArgType;
 121 #endif
 122
 123 // wxMSW-only overloads of wxEntry() and wxEntryStart() which take the
 124 // parameters passed to WinMain() instead of those passed to main()
 125 extern WXDLLIMPEXP_CORE bool
 126     wxEntryStart(HINSTANCE hInstance,
 127                 HINSTANCE hPrevInstance = NULL,
 128                 wxCmdLineArgType pCmdLine = NULL,
 129                 int nCmdShow = SW_SHOWNORMAL);
 130
 131 extern WXDLLIMPEXP_CORE int
 132     wxEntry(HINSTANCE hInstance,
 133             HINSTANCE hPrevInstance = NULL,
 134             wxCmdLineArgType pCmdLine = NULL,
 135             int nCmdShow = SW_SHOWNORMAL);
 136
 137 #if defined(__BORLANDC__) && wxUSE_UNICODE
 138     // Borland C++ has the following nonstandard behaviour: when the -WU
 139     // command line flag is used, the linker expects to find wWinMain instead
 140     // of WinMain. This flag causes the compiler to define _UNICODE and
 141     // UNICODE symbols and there's no way to detect its use, so we have to
 142     // define both WinMain and wWinMain so that IMPLEMENT_WXWIN_MAIN works
 143     // for both code compiled with and without -WU.
 144     // See http://sourceforge.net/tracker/?func=detail&atid=309863&aid=1935997&group_id=9863
 145     // for more details.
 146     #define IMPLEMENT_WXWIN_MAIN_BORLAND_NONSTANDARD                        \
 147         extern "C" int WINAPI wWinMain(HINSTANCE hInstance,                 \
 148                                       HINSTANCE hPrevInstance,              \
 149                                       wchar_t * WXUNUSED(lpCmdLine),        \
 150                                       int nCmdShow)                         \
 151         {                                                                   \
 152             /* NB: wxEntry expects lpCmdLine argument to be char*, not */   \
 153             /*     wchar_t*, but fortunately it's not used anywhere    */   \
 154             /*     and we can simply pass NULL in:                     */   \
 155             return wxEntry(hInstance, hPrevInstance, NULL, nCmdShow);       \
 156         }
 157 #else
 158     #define IMPLEMENT_WXWIN_MAIN_BORLAND_NONSTANDARD
 159 #endif // defined(__BORLANDC__) && wxUSE_UNICODE
 160
 161 #define IMPLEMENT_WXWIN_MAIN \
 162     extern "C" int WINAPI WinMain(HINSTANCE hInstance,                      \
 163                                   HINSTANCE hPrevInstance,                  \
 164                                   wxCmdLineArgType WXUNUSED(lpCmdLine),     \
 165                                   int nCmdShow)                             \
 166     {                                                                       \
 167         /* NB: We pass NULL in place of lpCmdLine to behave the same as  */ \
 168         /*     Borland-specific wWinMain() above. If it becomes needed   */ \
 169         /*     to pass lpCmdLine to wxEntry() here, you'll have to fix   */ \
 170         /*     wWinMain() above too.                                     */ \
 171         return wxEntry(hInstance, hPrevInstance, NULL, nCmdShow);           \
 172     }                                                                       \
 173     IMPLEMENT_WXWIN_MAIN_BORLAND_NONSTANDARD
 174
 175
 176 #endif // _WX_APP_H_
 177