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    <p>You can use Spy++ to find which window is the desktop background window. </p> <p>On my system I see the following hierarchy:</p> <ul> <li>Window 000100098 "Program Manager" Progman <ul> <li>Window 0001009E "" SHELLDLL_DefView <ul> <li>Window 00100A0 "FolderView" SysListView32</li> </ul></li> </ul></li> </ul> <p>I guess you are referring to the SysListView32 - the window with all the icons. You can use <a href="http://msdn.microsoft.com/en-us/library/ms633500%28VS.85%29.aspx" rel="noreferrer">FindWindowEx</a> to find this window.</p> <p><strong>Edit</strong> You should use a combination of FindWindowEx and EnumerateChildWindows. The code presented below can be compiled in a command line box like this: <code>cl /EHsc finddesktop.cpp /DUNICODE /link user32.lib</code></p> <pre><code>#include &lt;windows.h&gt; #include &lt;iostream&gt; #include &lt;string&gt; BOOL CALLBACK EnumChildProc(HWND hwnd, LPARAM lParam) { std::wstring windowClass; windowClass.resize(255); unsigned int chars = ::RealGetWindowClass(hwnd, &amp;*windowClass.begin(), windowClass.size()); windowClass.resize(chars); if (windowClass == L"SysListView32") { HWND* folderView = reinterpret_cast&lt;HWND*&gt;(lParam); *folderView = hwnd; return FALSE; } return TRUE; } int wmain() { HWND parentFolderView = ::FindWindowEx(0, 0, L"Progman", L"Program Manager"); if (parentFolderView == 0) { std::wcout &lt;&lt; L"Couldn't find Progman window, error: 0x" &lt;&lt; std::hex &lt;&lt; GetLastError() &lt;&lt; std::endl; } HWND folderView = 0; ::EnumChildWindows(parentFolderView, EnumChildProc, reinterpret_cast&lt;LPARAM&gt;(&amp;folderView)); if (folderView == 0) { std::wcout &lt;&lt; L"Couldn't find FolderView window, error: 0x" &lt;&lt; std::hex &lt;&lt; GetLastError() &lt;&lt; std::endl; } HWND desktopWindow = ::GetDesktopWindow(); std::wcout &lt;&lt; L"Folder View: " &lt;&lt; folderView &lt;&lt; std::endl; std::wcout &lt;&lt; L"Desktop Window: " &lt;&lt; desktopWindow &lt;&lt; std::endl; return 0; } </code></pre> <p>Here are the results after running finddesktop.exe</p> <pre><code>Folder View: 000100A0 Desktop Window: 00010014 </code></pre> <p>As you can see the window handles are quite different.</p>
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    1. COI change the first line with desk = FindWindowEx(NULL,NULL,L"SysListView32",NULL); but I think it gets the same window as GetDesktopWindow as it has the same effect.
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