ext/ResizableLib/ResizableVersion.cpp

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