src/msw/main.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/main.cpp
   3 // Purpose:     WinMain/DllMain
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #include "wx/event.h"
  32 #include "wx/app.h"
  33 #include "wx/cmdline.h"
  34
  35 #include "wx/msw/private.h"
  36
  37 // Don't implement WinMain if we're building an MFC/wxWindows hybrid app.
  38 #if wxUSE_MFC && !defined(NOMAIN)
  39     #define NOMAIN 1
  40 #endif
  41
  42 #ifdef __BORLANDC__
  43     // BC++ has to be special: its run-time expects the DLL entry point to be
  44     // named DllEntryPoint instead of the (more) standard DllMain
  45     #define DllMain DllEntryPoint
  46 #endif
  47
  48 #if defined(__WXMICROWIN__)
  49     #define HINSTANCE HANDLE
  50 #endif
  51
  52 #if wxUSE_GUI
  53
  54 // ----------------------------------------------------------------------------
  55 // function prototypes
  56 // ----------------------------------------------------------------------------
  57
  58 // from src/msw/app.cpp
  59 extern void WXDLLEXPORT wxEntryCleanup();
  60
  61 static wxChar **ConvertToStandardCommandArgs(const wxChar *p, int& argc);
  62
  63 // ============================================================================
  64 // implementation: various entry points
  65 // ============================================================================
  66
  67 // ----------------------------------------------------------------------------
  68 // Windows-specific wxEntry
  69 // ----------------------------------------------------------------------------
  70
  71 int wxEntry(HINSTANCE hInstance,
  72             HINSTANCE WXUNUSED(hPrevInstance),
  73             char *pCmdLine,
  74             int nCmdShow)
  75 {
  76     // remember the parameters Windows gave us
  77     wxSetInstance(hInstance);
  78     wxApp::m_nCmdShow = nCmdShow;
  79
  80     // parse the command line
  81     int argc;
  82     wxChar **argv = ConvertToStandardCommandArgs(wxConvertMB2WX(pCmdLine), argc);
  83
  84     return wxEntry(argc, argv);
  85 }
  86
  87 // May wish not to have a DllMain or WinMain, e.g. if we're programming
  88 // a Netscape plugin or if we're writing a console application
  89 #if !defined(NOMAIN)
  90
  91 extern "C"
  92 {
  93
  94 // ----------------------------------------------------------------------------
  95 // WinMain
  96 // ----------------------------------------------------------------------------
  97
  98 // Note that WinMain is also defined in dummy.obj, which is linked to
  99 // an application that is using the DLL version of wxWindows.
 100
 101 #if !defined(_WINDLL)
 102
 103 int PASCAL WinMain(HINSTANCE hInstance,
 104                    HINSTANCE hPrevInstance,
 105                    LPSTR lpCmdLine,
 106                    int nCmdShow)
 107 {
 108     return wxEntry(hInstance, hPrevInstance, lpCmdLine, nCmdShow);
 109 }
 110
 111 #else // _WINDLL
 112
 113 // DLL entry point
 114
 115 BOOL WINAPI
 116 DllMain(HANDLE hModule, DWORD fdwReason, LPVOID WXUNUSED(lpReserved))
 117 {
 118     // Only call wxEntry if the application itself is part of the DLL.
 119     // If only the wxWindows library is in the DLL, then the
 120     // initialisation will be called when the application implicitly
 121     // calls WinMain.
 122 #ifndef WXMAKINGDLL
 123     switch (fdwReason)
 124     {
 125         case DLL_PROCESS_ATTACH:
 126             return wxEntry(hModule);
 127
 128         case DLL_PROCESS_DETACH:
 129             wxEntryCleanup();
 130             break;
 131     }
 132 #else
 133         (void)hModule;
 134         (void)fdwReason;
 135 #endif // !WXMAKINGDLL
 136
 137     return TRUE;
 138 }
 139
 140 #endif // _WINDLL/!_WINDLL
 141
 142 } // extern "C"
 143
 144 #endif // !NOMAIN
 145
 146 // ---------------------------------------------------------------------------
 147 // Convert Windows to argc, argv style
 148 // ---------------------------------------------------------------------------
 149
 150 wxChar **ConvertToStandardCommandArgs(const wxChar *p, int& argc)
 151 {
 152     // break the command line in words
 153     wxArrayString args;
 154     if ( p )
 155     {
 156         args = wxCmdLineParser::ConvertStringToArgs(p);
 157     }
 158
 159     // +1 here for the program name
 160     argc = args.GetCount() + 1;
 161
 162     // and +1 here for the terminating NULL
 163     wxChar **argv = new wxChar *[argc + 1];
 164
 165     argv[0] = new wxChar[MAX_PATH];
 166     ::GetModuleFileName(wxhInstance, argv[0], MAX_PATH);
 167
 168     // copy all the other arguments to wxApp::argv[]
 169     for ( int i = 1; i < argc; i++ )
 170     {
 171         argv[i] = wxStrdup(args[i - 1]);
 172     }
 173
 174     // argv[] must be NULL-terminated
 175     argv[argc] = NULL;
 176
 177     return argv;
 178 }
 179
 180 #endif // wxUSE_GUI
 181
 182 // ----------------------------------------------------------------------------
 183 // global HINSTANCE
 184 // ----------------------------------------------------------------------------
 185
 186 #if wxUSE_BASE
 187
 188 HINSTANCE wxhInstance = 0;
 189
 190 HINSTANCE wxGetInstance()
 191 {
 192     return wxhInstance;
 193 }
 194
 195 void wxSetInstance(HINSTANCE hInst)
 196 {
 197     wxhInstance = hInst;
 198 }
 199
 200 #endif // wxUSE_BASE
 201