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
  59 static void CheckCommCtrlsVersion()
  60 {
  61         // Check Common Controls version
  62         SecureZeroMemory(&g_dviCommCtrls, sizeof(DLLVERSIONINFO));
  63         HMODULE hMod = AtlLoadSystemLibraryUsingFullPath(_T("comctl32.dll"));
  64         if (hMod != NULL)
  65         {
  66                 // Get the version function
  67                 DLLGETVERSIONPROC pfnDllGetVersion;
  68                 pfnDllGetVersion = (DLLGETVERSIONPROC)GetProcAddress(hMod, "DllGetVersion");
  69
  70                 if (pfnDllGetVersion != NULL)
  71                 {
  72                         // Obtain version information
  73                         g_dviCommCtrls.cbSize = sizeof(DLLVERSIONINFO);
  74                         if (SUCCEEDED(pfnDllGetVersion(&g_dviCommCtrls)))
  75                         {
  76                                 ::FreeLibrary(hMod);
  77                                 return;
  78                         }
  79                 }
  80
  81                 ::FreeLibrary(hMod);
  82         }
  83
  84         // Set values for the worst case
  85         g_dviCommCtrls.dwMajorVersion = 4;
  86         g_dviCommCtrls.dwMinorVersion = 0;
  87         g_dviCommCtrls.dwBuildNumber = 0;
  88         g_dviCommCtrls.dwPlatformID = DLLVER_PLATFORM_WINDOWS;
  89 }
  90
  91
  92 //////////////////////////////////////////////////////////////////////
  93 // Exported global symbols
  94
  95 #ifdef _WIN32_IE
  96 DWORD real_WIN32_IE = 0;
  97 #endif
  98
  99 // macro to convert version numbers to hex format
 100 #define CNV_OS_VER(x) ((BYTE)(((BYTE)(x) / 10 * 16) | ((BYTE)(x) % 10)))
 101
 102 void InitRealVersions()
 103 {
 104         CheckCommCtrlsVersion();
 105
 106 #ifdef _WIN32_IE
 107         switch (g_dviCommCtrls.dwMajorVersion)
 108         {
 109         case 4:
 110                 switch (g_dviCommCtrls.dwMinorVersion)
 111                 {
 112                 case 70:
 113                         real_WIN32_IE = 0x0300;
 114                         break;
 115                 case 71:
 116                         real_WIN32_IE = 0x0400;
 117                         break;
 118                 case 72:
 119                         real_WIN32_IE = 0x0401;
 120                         break;
 121                 default:
 122                         real_WIN32_IE = 0x0200;
 123                 }
 124                 break;
 125         case 5:
 126                 if (g_dviCommCtrls.dwMinorVersion > 80)
 127                         real_WIN32_IE = 0x0501;
 128                 else
 129                         real_WIN32_IE = 0x0500;
 130                 break;
 131         case 6:
 132                 real_WIN32_IE = 0x0600; // includes checks for 0x0560 (IE6)
 133                 break;
 134         default:
 135                 real_WIN32_IE = 0;
 136         }
 137 #endif
 138 }