include/systools/win32/odbccp32.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9
  10 #pragma once
  11
  12 #include <sal/config.h>
  13
  14 #include <prewin.h>
  15 #include <postwin.h>
  16
  17 namespace sal::systools
  18 {
  19 // Linking to odbccp32 requires also legacy_stdio_definitions; and that breaks
  20 // in some configurations, with make error 139. Load it dynamically instead.
  21 class odbccp32
  22 {
  23 public:
  24     odbccp32()
  25         : m_hDLL(LoadLibraryW(L"odbccp32.dll"))
  26     {
  27     }
  28     ~odbccp32() { FreeLibrary(m_hDLL); }
  29
  30     bool SQLGetInstalledDrivers(LPWSTR sBuf, WORD nBufSize) const
  31     {
  32         using proc_t = BOOL __stdcall(LPWSTR, WORD, WORD*);
  33         return Invoke<proc_t>("SQLGetInstalledDriversW", sBuf, nBufSize, nullptr);
  34     }
  35
  36     bool SQLManageDataSources(HWND hwndParent)
  37     {
  38         using proc_t = BOOL __stdcall(HWND);
  39         return Invoke<proc_t>("SQLManageDataSources", hwndParent);
  40     }
  41
  42 private:
  43     template <typename proc_t, typename... Args> bool Invoke(const char* func, Args... args) const
  44     {
  45         if (auto pFunc = reinterpret_cast<proc_t*>(GetProcAddress(m_hDLL, func)))
  46             return pFunc(args...);
  47         return false;
  48     }
  49
  50     HMODULE m_hDLL;
  51 };
  52 } // sal::systools
  53
  54 /* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */