ext/ResizableLib/ResizableVersion.cpp

   1 // ResizableVersion.cpp: implementation of the CResizableVersion class.
   2 //
   3 /////////////////////////////////////////////////////////////////////////////
   4 //
   5 // This file is part of ResizableLib
   6 // http://sourceforge.net/projects/resizablelib
   7 //
   8 // Copyright (C) 2000-2004 by Paolo Messina
   9 // http://www.geocities.com/ppescher - mailto:ppescher@hotmail.com
  10 //
  11 // The contents of this file are subject to the Artistic License (the "License").
  12 // You may not use this file except in compliance with the License.
  13 // You may obtain a copy of the License at:
  14 // http://www.opensource.org/licenses/artistic-license.html
  15 //
  16 // If you find this code useful, credits would be nice!
  17 //
  18 /////////////////////////////////////////////////////////////////////////////
  19
  20 #include "stdafx.h"
  21 #include "ResizableVersion.h"
  22
  23 //////////////////////////////////////////////////////////////////////
  24 // Static initializer object (with macros to hide in ClassView)
  25
  26 // static intializer must be called before user code
  27 #pragma warning(disable:4073)
  28 #pragma init_seg(lib)
  29
  30 #ifdef _UNDEFINED_
  31 #define BEGIN_HIDDEN {
  32 #define END_HIDDEN }
  33 #else
  34 #define BEGIN_HIDDEN
  35 #define END_HIDDEN
  36 #endif
  37
  38 BEGIN_HIDDEN
  39 struct _VersionInitializer
  40 {
  41         _VersionInitializer()
  42         {
  43                 InitRealVersions();
  44         };
  45 };
  46 END_HIDDEN
  47
  48 // The one and only version-check object
  49 static _VersionInitializer g_version;
  50
  51 //////////////////////////////////////////////////////////////////////
  52 // Private implementation
  53
  54 // DLL Version support
  55 #include <shlwapi.h>
  56
  57 static DLLVERSIONINFO g_dviCommCtrls;
  58 static OSVERSIONINFOEX g_osviWindows;
  59
  60 static void CheckOsVersion()
  61 {
  62         // Try calling GetVersionEx using the OSVERSIONINFOEX structure.
  63         SecureZeroMemory(&g_osviWindows, sizeof(OSVERSIONINFOEX));
  64         g_osviWindows.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
  65         if (GetVersionEx((LPOSVERSIONINFO)&g_osviWindows))
  66                 return;
  67
  68         // If that fails, try using the OSVERSIONINFO structure.
  69         g_osviWindows.dwOSVersionInfoSize = sizeof (OSVERSIONINFO);
  70         if (GetVersionEx((LPOSVERSIONINFO)&g_osviWindows))
  71                 return;
  72
  73         // When all the above fails, set values for the worst case
  74         g_osviWindows.dwMajorVersion = 4;
  75         g_osviWindows.dwMinorVersion = 0;
  76         g_osviWindows.dwBuildNumber = 0;
  77         g_osviWindows.dwPlatformId = VER_PLATFORM_WIN32_WINDOWS;
  78         g_osviWindows.szCSDVersion[0] = TEXT('\0');
  79 }
  80
  81 static void CheckCommCtrlsVersion()
  82 {
  83         // Check Common Controls version
  84         SecureZeroMemory(&g_dviCommCtrls, sizeof(DLLVERSIONINFO));
  85         HMODULE hMod = ::LoadLibrary(_T("comctl32.dll"));
  86         if (hMod != NULL)
  87         {
  88                 // Get the version function
  89                 DLLGETVERSIONPROC pfnDllGetVersion;
  90                 pfnDllGetVersion = (DLLGETVERSIONPROC)GetProcAddress(hMod, "DllGetVersion");
  91
  92                 if (pfnDllGetVersion != NULL)
  93                 {
  94                         // Obtain version information
  95                         g_dviCommCtrls.cbSize = sizeof(DLLVERSIONINFO);
  96                         if (SUCCEEDED(pfnDllGetVersion(&g_dviCommCtrls)))
  97                         {
  98                                 ::FreeLibrary(hMod);
  99                                 return;
 100                         }
 101                 }
 102
 103                 ::FreeLibrary(hMod);
 104         }
 105
 106         // Set values for the worst case
 107         g_dviCommCtrls.dwMajorVersion = 4;
 108         g_dviCommCtrls.dwMinorVersion = 0;
 109         g_dviCommCtrls.dwBuildNumber = 0;
 110         g_dviCommCtrls.dwPlatformID = DLLVER_PLATFORM_WINDOWS;
 111 }
 112
 113
 114 //////////////////////////////////////////////////////////////////////
 115 // Exported global symbols
 116
 117 DWORD realWINVER = 0;
 118
 119 #ifdef _WIN32_WINDOWS
 120 DWORD real_WIN32_WINDOWS = 0;
 121 #endif
 122
 123 #ifdef _WIN32_WINNT
 124 DWORD real_WIN32_WINNT = 0;
 125 #endif
 126
 127 #ifdef _WIN32_IE
 128 DWORD real_WIN32_IE = 0;
 129 #endif
 130
 131 // macro to convert version numbers to hex format
 132 #define CNV_OS_VER(x) ((BYTE)(((BYTE)(x) / 10 * 16) | ((BYTE)(x) % 10)))
 133
 134 void InitRealVersions()
 135 {
 136         CheckCommCtrlsVersion();
 137         CheckOsVersion();
 138
 139         // set real version values
 140
 141         realWINVER = MAKEWORD(CNV_OS_VER(g_osviWindows.dwMinorVersion),
 142                 CNV_OS_VER(g_osviWindows.dwMajorVersion));
 143
 144 #ifdef _WIN32_WINDOWS
 145         if (g_osviWindows.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS)
 146                 real_WIN32_WINDOWS = realWINVER;
 147         else
 148                 real_WIN32_WINDOWS = 0;
 149 #endif
 150
 151 #ifdef _WIN32_WINNT
 152         if (g_osviWindows.dwPlatformId == VER_PLATFORM_WIN32_NT)
 153                 real_WIN32_WINNT = realWINVER;
 154         else
 155                 real_WIN32_WINNT = 0;
 156 #endif
 157
 158 #ifdef _WIN32_IE
 159         switch (g_dviCommCtrls.dwMajorVersion)
 160         {
 161         case 4:
 162                 switch (g_dviCommCtrls.dwMinorVersion)
 163                 {
 164                 case 70:
 165                         real_WIN32_IE = 0x0300;
 166                         break;
 167                 case 71:
 168                         real_WIN32_IE = 0x0400;
 169                         break;
 170                 case 72:
 171                         real_WIN32_IE = 0x0401;
 172                         break;
 173                 default:
 174                         real_WIN32_IE = 0x0200;
 175                 }
 176                 break;
 177         case 5:
 178                 if (g_dviCommCtrls.dwMinorVersion > 80)
 179                         real_WIN32_IE = 0x0501;
 180                 else
 181                         real_WIN32_IE = 0x0500;
 182                 break;
 183         case 6:
 184                 real_WIN32_IE = 0x0600; // includes checks for 0x0560 (IE6)
 185                 break;
 186         default:
 187                 real_WIN32_IE = 0;
 188         }
 189 #endif
 190 }