src/Utils/DllVersion.h

   1 // TortoiseGit - a Windows shell extension for easy version control
   2
   3 // Copyright (C) 2012 - TortoiseSVN
   4
   5 // This program is free software; you can redistribute it and/or
   6 // modify it under the terms of the GNU General Public License
   7 // as published by the Free Software Foundation; either version 2
   8 // of the License, or (at your option) any later version.
   9
  10 // This program is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14
  15 // You should have received a copy of the GNU General Public License
  16 // along with this program; if not, write to the Free Software Foundation,
  17 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 //
  19 #pragma once
  20
  21 // functions copied from atlbase.h: those functions got removed
  22 // in VS2012...
  23 // removed functions: AtlGetShellVersion, AtlGetDllVersion
  24
  25
  26 inline HRESULT GetDllVersion(
  27         _In_ HINSTANCE hInstDLL,
  28         _Out_ DLLVERSIONINFO* pDllVersionInfo)
  29 {
  30         ATLENSURE(pDllVersionInfo);
  31
  32         // We must get this function explicitly because some DLLs don't implement it.
  33         DLLGETVERSIONPROC pfnDllGetVersion = (DLLGETVERSIONPROC)::GetProcAddress(hInstDLL, "DllGetVersion");
  34
  35         if (!pfnDllGetVersion)
  36                 return E_NOTIMPL;
  37
  38         return (*pfnDllGetVersion)(pDllVersionInfo);
  39 }
  40
  41 inline HRESULT GetDllVersion(
  42         _In_z_ LPCTSTR lpstrDllName,
  43         _Out_ DLLVERSIONINFO* pDllVersionInfo)
  44 {
  45         HINSTANCE hInstDLL = ::LoadLibrary(lpstrDllName);
  46         if (!hInstDLL)
  47                 return AtlHresultFromLastError();
  48         HRESULT hRet = GetDllVersion(hInstDLL, pDllVersionInfo);
  49         ::FreeLibrary(hInstDLL);
  50         return hRet;
  51 }
  52
  53 // Shell Versions:
  54 //   WinNT 4.0                                      maj=4 min=00
  55 //   IE 3.x, IE 4.0 without Web Integrated Desktop  maj=4 min=00
  56 //   IE 4.0 with Web Integrated Desktop             maj=4 min=71
  57 //   IE 4.01 with Web Integrated Desktop            maj=4 min=72
  58 //   Win2000                                        maj=5 min=00
  59 inline HRESULT GetShellVersion(
  60         _Out_ LPDWORD pdwMajor,
  61         _Out_ LPDWORD pdwMinor)
  62 {
  63         ATLENSURE(pdwMajor && pdwMinor);
  64
  65         DLLVERSIONINFO dvi = { 0 };
  66         dvi.cbSize = sizeof(dvi);
  67         HRESULT hRet = GetDllVersion(L"shell32.dll", &dvi);
  68
  69         if(SUCCEEDED(hRet))
  70         {
  71                 *pdwMajor = dvi.dwMajorVersion;
  72                 *pdwMinor = dvi.dwMinorVersion;
  73         }
  74
  75         return hRet;
  76 }