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POHow to tell Windows Explorer to refresh its icons?
 

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  1. POHow to tell Windows Explorer to refresh its icons?
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    <p>Once my installer finishes installing new versions of my application's exe, I'd like to tell Explorer to use the new exe's icons for its shortcuts. However, I cannot figure out how to do this.</p> <p>From reading online, it looks like the problem is that the <a href="http://www.catch22.net/tuts/sysimg" rel="nofollow noreferrer">system image list</a> is caching an old version of the icon. I tried calling <a href="http://msdn.microsoft.com/en-us/library/bb762118%28VS.85%29.aspx" rel="nofollow noreferrer">SHChangeNotify</a> with a <code>SHCNE_UPDATEIMAGE</code> parameter. I tried calling <a href="http://msdn.microsoft.com/en-us/library/bb762258%28VS.85%29.aspx" rel="nofollow noreferrer">SHUpdateImage</a>. I even tried the <a href="http://groups.google.com/group/microsoft.public.platformsdk.shell/browse_thread/thread/439e0ff1718f4377" rel="nofollow noreferrer">sledgehammer approach</a> of broadcasting <code>WM_SETTINGCHANGE</code>. Nothing seems to work.</p> <p>It's entirely possible that I'm just doing something wrong. Any help would be appreciated.</p> <p>Warning: Very ugly test code follows.</p> <pre><code>#if 1 // First attempt: using shell functions wchar_t icon_path[MAX_PATH]; int icon_index; UINT icon_flags; IShellFolder *desktop_folder; IShellFolder *sub_folder; IExtractIcon *extract_icon; LPITEMIDLIST pidl; SHGetDesktopFolder(&amp;desktop_folder); wchar_t *folder_path = L"C:\\Documents and Settings\\All Users\\Start Menu\\Programs\\MyCompany\\"; desktop_folder-&gt;ParseDisplayName(NULL, NULL, folder_path, NULL, &amp;pidl, NULL); desktop_folder-&gt;BindToObject(pidl, NULL, IID_IShellFolder, (void**) &amp;sub_folder); sub_folder-&gt;ParseDisplayName(NULL, NULL, L"MyApp.lnk", NULL, &amp;pidl, NULL); sub_folder-&gt;GetUIObjectOf(NULL, 1, (LPCITEMIDLIST*) &amp;pidl, IID_IExtractIcon, NULL, (void**) &amp;extract_icon); extract_icon-&gt;GetIconLocation(0, icon_path, MAX_PATH, &amp;icon_index, &amp;icon_flags); SHFILEINFO sfi; DWORD_PTR result = SHGetFileInfo(shortcut_path, 0, &amp;sfi, sizeof(sfi), SHGFI_SYSICONINDEX | SHGFI_LARGEICON); SHUpdateImage(icon_path, icon_index, icon_flags, sfi.iIcon); // sfi.iIcon should be correct, but we'll try both, just for fun... SHChangeNotify(SHCNE_UPDATEIMAGE, SHCNF_DWORD, NULL, (LPCVOID) icon_index); SHChangeNotify(SHCNE_UPDATEIMAGE, SHCNF_DWORD, NULL, (LPCVOID) sfi.iIcon); #else // Second attempt: broadcasting a settings change HKEY reg; RegCreateKeyEx(HKEY_CURRENT_USER, L"Control Panel\\Desktop\\WindowMetrics", 0, NULL, 0, KEY_SET_VALUE, NULL, &amp;reg, NULL); DWORD value; value = 33; RegSetValueEx(reg, L"Shell Icon Size", 0, REG_DWORD, (BYTE*) &amp;value, sizeof(value)); value = 32; SendMessage(HWND_BROADCAST, WM_SETTINGCHANGE, SPI_SETNONCLIENTMETRICS, (int) L"WindowMetrics"); RegSetValueEx(reg, L"Shell Icon Size", 0, REG_DWORD, (BYTE*) &amp;value, sizeof(value)); SendMessage(HWND_BROADCAST, WM_SETTINGCHANGE, SPI_SETNONCLIENTMETRICS, (int) L"WindowMetrics"); #endif </code></pre>
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    1. USJosh Kelley
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      1. POHow to tell Windows Explorer to refresh its icons?
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    2. VO
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      1. POHow to tell Windows Explorer to refresh its icons?
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    1. COHave you tried just asking nicely? (Sorry, couldn't help it. ;)
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      1. POHow to tell Windows Explorer to refresh its icons?
      1. USDustin Hansen
    2. CO@Dustin: Let me try. Start -> Run -> "explorer --refresh-my-icons-please". Explorer replies: "The path '--refresh-my-icons-please' does not exist or is not a directory." Nope, didn't work.
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      1. POHow to tell Windows Explorer to refresh its icons?
      1. USJosh Kelley
 

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