1 // Copyright (c) 2008, Google Inc. All rights reserved.

     2 // 

     3 // Redistribution and use in source and binary forms, with or without

     4 // modification, are permitted provided that the following conditions are

     5 // met:

     6 // 

     7 //     * Redistributions of source code must retain the above copyright

     8 // notice, this list of conditions and the following disclaimer.

     9 //     * Redistributions in binary form must reproduce the above

    10 // copyright notice, this list of conditions and the following disclaimer

    11 // in the documentation and/or other materials provided with the

    12 // distribution.

    13 //     * Neither the name of Google Inc. nor the names of its

    14 // contributors may be used to endorse or promote products derived from

    15 // this software without specific prior written permission.

    16 // 

    17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

    18 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

    19 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

    20 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

    21 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

    22 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

    23 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

    24 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

    25 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

    26 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

    27 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    28 

    29 #include "config.h"

    30 #include "WindowsVersion.h"

    31 

    32 #include <windows.h>

    33 

    34 namespace WebCore {

    35 

    36 bool isVistaOrNewer()

    37 {

    38     // Cache the result to avoid asking every time.

    39     static bool haveResult = false;

    40     static bool result = false;

    41     if (!haveResult) {

    42         OSVERSIONINFO versionInfo;

    43         versionInfo.dwOSVersionInfoSize = sizeof(versionInfo);

    44         GetVersionEx(&versionInfo);

    45 

    46         haveResult = true;

    47         result = versionInfo.dwMajorVersion >= 6;

    48     }

    49     return result;

    50 }

    51 

    52 } // namespace WebCore