dbaccess/win32/source/odbcconfig/odbcconfig.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   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  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20
  21 #include <sal/config.h>
  22
  23 #include <systools/win32/odbccp32.hxx>
  24
  25 // displays the error text for the last error (GetLastError), and returns this error value
  26 static int displayLastError()
  27 {
  28     DWORD   dwError = GetLastError();
  29
  30     LPVOID lpMsgBuf = nullptr;
  31     FormatMessageW(
  32         FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
  33         nullptr,
  34         dwError,
  35         MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
  36         reinterpret_cast<LPWSTR>(&lpMsgBuf),
  37         0,
  38         nullptr
  39     );
  40
  41     // Display the string.
  42     MessageBoxW( nullptr, static_cast<LPCWSTR>(lpMsgBuf), nullptr, MB_OK | MB_ICONERROR );
  43
  44     // Free the buffer.
  45     HeapFree( GetProcessHeap(), 0, lpMsgBuf );
  46
  47     return dwError;
  48 }
  49
  50 /** registers the window class for our application's main window
  51 */
  52 static bool registerWindowClass( HINSTANCE _hAppInstance )
  53 {
  54     WNDCLASSEXW wcx;
  55
  56     wcx.cbSize = sizeof(wcx);                   // size of structure
  57     wcx.style = CS_HREDRAW | CS_VREDRAW;        // redraw if size changes
  58     wcx.lpfnWndProc = DefWindowProcW;           // points to window procedure
  59     wcx.cbClsExtra = 0;                         // no extra class memory
  60     wcx.cbWndExtra = 0;                         // no extra window memory
  61     wcx.hInstance = _hAppInstance;              // handle to instance
  62     wcx.hIcon = nullptr;                        // predefined app. icon
  63     wcx.hCursor = nullptr;                      // predefined arrow
  64     wcx.hbrBackground = nullptr;                // no background brush
  65     wcx.lpszMenuName =  nullptr;                // name of menu resource
  66     wcx.lpszClassName = L"ODBCConfigMainClass"; // name of window class
  67     wcx.hIconSm = nullptr;                      // small class icon
  68
  69     return ( !!RegisterClassExW( &wcx ) );
  70 }
  71
  72 /// initializes the application instances
  73 static HWND initInstance( HINSTANCE _hAppInstance )
  74 {
  75     HWND hWindow = CreateWindowW(
  76         L"ODBCConfigMainClass", // name of window class
  77         L"ODBC Config Wrapper", // title-bar string
  78         WS_OVERLAPPEDWINDOW,    // top-level window
  79         CW_USEDEFAULT,          // default horizontal position
  80         CW_USEDEFAULT,          // default vertical position
  81         CW_USEDEFAULT,          // default width
  82         CW_USEDEFAULT,          // default height
  83         nullptr,                // no owner window
  84         nullptr,                // use class menu
  85         _hAppInstance,          // handle to application instance
  86         nullptr);               // no window-creation data
  87
  88     // don't show the window, we only need it as parent handle for the
  89     // SQLManageDataSources function
  90     return hWindow;
  91 }
  92
  93 // main window function
  94 extern "C" int APIENTRY wWinMain( HINSTANCE _hAppInstance, HINSTANCE, LPWSTR, int )
  95 {
  96     if ( !registerWindowClass( _hAppInstance ) )
  97         return FALSE;
  98
  99     HWND hAppWindow = initInstance( _hAppInstance );
 100     if ( !IsWindow( hAppWindow ) )
 101         return displayLastError();
 102
 103     // Have a odbccp32 variable, to not call FreeLibrary before displayLastError
 104     sal::systools::odbccp32 odbccp32;
 105     if (!odbccp32.SQLManageDataSources(hAppWindow))
 106         return displayLastError();
 107
 108     return 0;
 109 }
 110
 111 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */