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<title>CStruct:Examples:Show All Processes</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/tool_helper</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">ToolHelper</span>
<span class="r">module</span> <span class="cl">Windows</span>
<span class="co">MAX_PATH</span> = <span class="i">260</span>
<span class="r">module</span> <span class="cl">ToolHelper</span>
<span class="r">class</span> <span class="cl">PROCESSENTRY32</span> < <span class="co">Win32Struct</span>
<span class="co">DWORD</span> <span class="sy">:dwSize</span>
<span class="co">DWORD</span> <span class="sy">:cntUsage</span>
<span class="co">DWORD</span> <span class="sy">:th32ProcessID</span>
<span class="co">DWORD</span> <span class="sy">:th32DefaultHeapID</span>
<span class="co">DWORD</span> <span class="sy">:th32ModuleID</span>
<span class="co">DWORD</span> <span class="sy">:cntThreads</span>
<span class="co">DWORD</span> <span class="sy">:th32ParentProcessID</span>
<span class="co">LONG</span> <span class="sy">:pcPriClassBase</span>
<span class="co">DWORD</span> <span class="sy">:dwFlags</span>
<span class="co">CHAR</span> <span class="sy">:szExeFile</span>,[<span class="co">MAX_PATH</span>]
<span class="r">end</span>
<span class="r">end</span>
<span class="r">end</span>
<span class="r">def</span> <span class="fu">show_all_processes</span>
proc_enrty32 = <span class="co">PROCESSENTRY32</span>.new
proc_enrty32.dwSize = <span class="co">PROCESSENTRY32</span>.__size__
snap_handle = CreateToolhelp32Snapshot( <span class="co">TH32CS_SNAPPROCESS</span>,<span class="i">0</span>)
<span class="r">if</span> Process32First(snap_handle,proc_enrty32.data)
show_process proc_enrty32
<span class="r">while</span> <span class="pc">true</span>
<span class="r">break</span> <span class="r">if</span> !Process32Next( snap_handle,proc_enrty32.data )
show_process proc_enrty32
<span class="r">end</span>
<span class="r">end</span>
<span class="r">end</span>
<span class="r">def</span> <span class="fu">show_process</span> proc_enrty32
printf<span class="s"><span class="dl">"</span><span class="k">%20s 0x%08X</span><span class="ch">\n</span><span class="dl">"</span></span>,proc_enrty32.szExeFile.to_cstr,proc_enrty32.th32ProcessID
<span class="r">end</span>
printf<span class="s"><span class="dl">"</span><span class="k">%20s %s</span><span class="ch">\n</span><span class="dl">"</span></span>,<span class="s"><span class="dl">"</span><span class="k"><Process Name></span><span class="dl">"</span></span>,<span class="s"><span class="dl">"</span><span class="k"><PID></span><span class="dl">"</span></span>
printf<span class="s"><span class="dl">"</span><span class="k">%20s %s</span><span class="ch">\n</span><span class="dl">"</span></span>,<span class="s"><span class="dl">"</span><span class="k">--------------</span><span class="dl">"</span></span>,<span class="s"><span class="dl">"</span><span class="k">-----</span><span class="dl">"</span></span>
show_all_processes</pre></div>
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