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<title>CStruct:Examples:GetVersionExA</title>
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<div class="code"><pre><span class="c"># CStruct Examples</span>
require <span class="s"><span class="dl">'</span><span class="k">windows/system_info</span><span class="dl">'</span></span>
require <span class="s"><span class="dl">'</span><span class="k">win32struct</span><span class="dl">'</span></span>
include <span class="co">Windows</span>::<span class="co">SystemInfo</span>
<span class="c"># OSVERSIONINFOEXA in VC6 's SDK</span>
<span class="c">#typedef struct _OSVERSIONINFOEXA {</span>
<span class="c"># DWORD dwOSVersionInfoSize;</span>
<span class="c"># DWORD dwMajorVersion;</span>
<span class="c"># DWORD dwMinorVersion;</span>
<span class="c"># DWORD dwBuildNumber;</span>
<span class="c"># DWORD dwPlatformId;</span>
<span class="c"># CHAR szCSDVersion[ 128 ]; // Maintenance string for PSS usage</span>
<span class="c"># WORD wServicePackMajor;</span>
<span class="c"># WORD wServicePackMinor;</span>
<span class="c"># WORD wReserved[2];</span>
<span class="c">#} OSVERSIONINFOEXA;</span>
<span class="r">class</span> <span class="cl">OSVERSIONINFOEXA</span> < <span class="co">Win32Struct</span>
<span class="co">DWORD</span> <span class="sy">:dwOSVersionInfoSize</span>
<span class="co">DWORD</span> <span class="sy">:dwMajorVersion</span>
<span class="co">DWORD</span> <span class="sy">:dwMinorVersion</span>
<span class="co">DWORD</span> <span class="sy">:dwBuildNumber</span>
<span class="co">DWORD</span> <span class="sy">:dwPlatformId</span>
<span class="co">CHAR</span> <span class="sy">:szCSDVersion</span>,[ <span class="i">128</span> ]
<span class="co">WORD</span> <span class="sy">:wServicePackMajor</span>
<span class="co">WORD</span> <span class="sy">:wServicePackMinor</span>
<span class="co">WORD</span> <span class="sy">:wReserved</span>,[<span class="i">2</span>]
<span class="r">end</span>
ver_info_ex = <span class="co">OSVERSIONINFOEXA</span>.new <span class="r">do</span> |st|
st.dwOSVersionInfoSize = <span class="co">OSVERSIONINFOEXA</span>.__size__ <span class="c"># __size__ is an alias for method 'size'</span>
<span class="r">end</span>
<span class="c">#ANSI Version: GetVersionExA</span>
GetVersionExA(ver_info_ex.__data__) <span class="c"># __data__ is an alias for method 'data'</span>
puts <span class="s"><span class="dl">"</span><span class="k"><OS Version Infomation></span><span class="dl">"</span></span>
puts <span class="s"><span class="dl">"</span><span class="k">Major Version:</span><span class="il"><span class="idl">#{</span>ver_info_ex.dwMajorVersion<span class="idl">}</span></span><span class="dl">"</span></span>
puts <span class="s"><span class="dl">"</span><span class="k">Minor Version:</span><span class="il"><span class="idl">#{</span>ver_info_ex.dwMinorVersion<span class="idl">}</span></span><span class="dl">"</span></span>
puts <span class="s"><span class="dl">"</span><span class="k">Build Number:</span><span class="il"><span class="idl">#{</span>ver_info_ex.dwBuildNumber<span class="idl">}</span></span><span class="dl">"</span></span>
puts <span class="s"><span class="dl">"</span><span class="k">Platform Id:</span><span class="il"><span class="idl">#{</span>ver_info_ex.dwPlatformId<span class="idl">}</span></span><span class="dl">"</span></span>
puts <span class="s"><span class="dl">"</span><span class="k">CSD Version:</span><span class="il"><span class="idl">#{</span>ver_info_ex.szCSDVersion.to_cstr<span class="idl">}</span></span><span class="dl">"</span></span> <span class="c"># to_cstr return a string(C Style)</span>
puts <span class="s"><span class="dl">"</span><span class="k">ServicePack Major:</span><span class="il"><span class="idl">#{</span>ver_info_ex.wServicePackMajor<span class="idl">}</span></span><span class="dl">"</span></span>
puts <span class="s"><span class="dl">"</span><span class="k">ServicePack Minor:</span><span class="il"><span class="idl">#{</span>ver_info_ex.wServicePackMinor<span class="idl">}</span></span><span class="dl">"</span></span></pre></div>
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