dbaccess/win32/source/odbcconfig/odbcconfig.cxx

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  30
  31 // MARKER(update_precomp.py): autogen include statement, do not remove
  32 #include "precompiled_dbaccess.hxx"
  33
  34 #ifndef __cplusplus
  35 #error Need C++ to compile
  36 #endif
  37
  38 #define UNICODE
  39 #define _UNICODE
  40 #include <tchar.h>
  41
  42 #ifdef _MSC_VER
  43 #pragma warning(push, 1)
  44 #pragma warning(disable:4005)
  45 #endif
  46
  47 #include <windows.h>
  48 #include <shellapi.h>
  49 #include <sqlext.h>
  50
  51 #ifdef _MSC_VER
  52 #pragma warning(pop)
  53 #endif
  54
  55 // the name of the library which contains the SQLManageDataSources function
  56 #define ODBC_UI_LIB_NAME    L"ODBCCP32.DLL"
  57
  58 // the signature of the SQLManageDataSources function
  59 typedef SQLRETURN (SQL_API* TSQLManageDataSource) (SQLHWND hwndParent);
  60
  61 // displays the error text for the last error (GetLastError), and returns this error value
  62 int displayLastError()
  63 {
  64     DWORD       dwError = GetLastError();
  65
  66     LPVOID lpMsgBuf;
  67     FormatMessage(
  68         FORMAT_MESSAGE_ALLOCATE_BUFFER |
  69         FORMAT_MESSAGE_FROM_SYSTEM,
  70         NULL,
  71         dwError,
  72         MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
  73         (LPTSTR)&lpMsgBuf,
  74         0,
  75         NULL
  76     );
  77
  78     // Display the string.
  79     MessageBox( NULL, (LPCTSTR)lpMsgBuf, NULL, MB_OK | MB_ICONERROR );
  80
  81     // Free the buffer.
  82     LocalFree( lpMsgBuf );
  83
  84     return dwError;
  85 }
  86
  87 /** registers the window class for our application's main window
  88 */
  89 BOOL registerWindowClass( HINSTANCE _hAppInstance )
  90 {
  91     WNDCLASSEX wcx;
  92
  93     wcx.cbSize = sizeof(wcx);                   // size of structure
  94     wcx.style = CS_HREDRAW | CS_VREDRAW;        // redraw if size changes
  95     wcx.lpfnWndProc = DefWindowProc;            // points to window procedure
  96     wcx.cbClsExtra = 0;                         // no extra class memory
  97     wcx.cbWndExtra = 0;                         // no extra window memory
  98     wcx.hInstance = _hAppInstance;              // handle to instance
  99     wcx.hIcon = NULL;                           // predefined app. icon
 100     wcx.hCursor = NULL;                         // predefined arrow
 101     wcx.hbrBackground = NULL;                   // no background brush
 102     wcx.lpszMenuName =  NULL;                   // name of menu resource
 103     wcx.lpszClassName = L"ODBCConfigMainClass"; // name of window class
 104     wcx.hIconSm = NULL;                         // small class icon
 105
 106     return ( NULL != RegisterClassEx( &wcx ) );
 107 }
 108
 109 /// initializes the application instances
 110 HWND initInstance( HINSTANCE _hAppInstance )
 111 {
 112     HWND hWindow = CreateWindow(
 113         L"ODBCConfigMainClass", // name of window class
 114         L"ODBC Config Wrapper", // title-bar string
 115         WS_OVERLAPPEDWINDOW,    // top-level window
 116         CW_USEDEFAULT,          // default horizontal position
 117         CW_USEDEFAULT,          // default vertical position
 118         CW_USEDEFAULT,          // default width
 119         CW_USEDEFAULT,          // default height
 120         (HWND) NULL,            // no owner window
 121         (HMENU) NULL,           // use class menu
 122         _hAppInstance,          // handle to application instance
 123         (LPVOID) NULL);         // no window-creation data
 124
 125     // don't show the window, we only need it as parent handle for the
 126     // SQLManageDataSources function
 127     return hWindow;
 128 }
 129
 130 // main window function
 131 #ifdef __MINGW32__
 132 extern "C" int APIENTRY WinMain( HINSTANCE _hAppInstance, HINSTANCE, LPSTR, int )
 133 #else
 134 extern "C" int APIENTRY _tWinMain( HINSTANCE _hAppInstance, HINSTANCE, LPTSTR, int )
 135 #endif
 136 {
 137     if ( !registerWindowClass( _hAppInstance ) )
 138         return FALSE;
 139
 140     HWND hAppWindow = initInstance( _hAppInstance );
 141     if ( !IsWindow( hAppWindow ) )
 142         return displayLastError();
 143
 144     HMODULE hModule = LoadLibraryW( ODBC_UI_LIB_NAME );
 145     if ( hModule == NULL )
 146         hModule = LoadLibraryExW( ODBC_UI_LIB_NAME, NULL, LOAD_WITH_ALTERED_SEARCH_PATH );
 147     if ( hModule == NULL )
 148         return displayLastError();
 149
 150     FARPROC pManageDSProc = GetProcAddress( hModule, "SQLManageDataSources" );
 151     if ( pManageDSProc == NULL )
 152         return displayLastError();
 153
 154     TSQLManageDataSource pManageDS = (TSQLManageDataSource)pManageDSProc;
 155     if ( !( (*pManageDS)( hAppWindow ) ) )
 156         return displayLastError();
 157
 158     FreeLibrary( hModule );
 159
 160     return 0;
 161 }
 162