How to refresh folder

[MKC002]

If any folder is open in window explorer then how to refresh its contents. Say c:/xyz is open, it contains some files and folders, i want to progratically refresh the children.

[Chandrasekharan P]

Are you working on mfc?? if yes then, i think you can just redraw whatever it is that you want on the screen.

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[Lost User]

How exactly do you mean "programmatically"? With an external program or an explorer addin?

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[App_]

Here you go.

// Call for each explorer window

    HWND hExplorer = FindWindowEx(GetDesktopWindow(), NULL, L"ExploreWClass", NULL);

    while(hExplorer != NULL)
    {
        EnumChildWindows(hExplorer, RefreshFolderSelectionCB, (LPARAM)&packet);

        hExplorer = FindWindowEx(GetDesktopWindow(), hExplorer, L"ExploreWClass", NULL);
    }

...
...
...

BOOL CALLBACK RefreshFolderSelectionCB(HWND hWnd, LPARAM lParam)
{
WCHAR sBuffer[MAX_PATH] = {0};

::GetClassName(hWnd, sBuffer, MAX\_PATH);

if (wcscmp(L"SysTreeView32", sBuffer) == 0)
{
    RefreshFolderSelectionPacket\* pPacket = (RefreshFolderSelectionPacket\*)lParam;

    // Refreshes the tree nodes that match the contained full paths, and all their open descendants
    // Paths are updated by calling UpdateItem (below)
    // Cache is used across explorer instances to ensure no path is updated twice.

    RefreshSelection(pPacket);
}

return TRUE;

}

...
...
static void UpdateItem(IShellFolder* pDesktop, const std::wstring& rsFullPath)
{
PIDLIST_RELATIVE pIDL;

if (SUCCEEDED(pDesktop->ParseDisplayName(NULL, NULL, (LPWSTR)rsFullPath.c\_str(), NULL, &pIDL, NULL)))
{
    SHChangeNotify(SHCNE\_UPDATEITEM, SHCNF\_IDLIST|SHCNF\_NOTIFYRECURSIVE|SHCNF\_FLUSH, pIDL, NULL);

    ILFree(pIDL);
}

}

[David Crow]

http://social.msdn.microsoft.com/Forums/en/windowssdk/thread/cc4a702f-1b2f-4d19-bf68-c88967544172[^] Where do RefreshFolderSelectionPacket and RefreshSelection() come from?

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[App_]

uh huh, I ripped that code from there :cool:

[MKC002]

My program hides a file say from c: drive. If window explorer is open (c drive) i found file still display. If i refresh window explorer manually then file disappear.

[MKC002]

I get compile error for RefreshFolderSelectionPacket how to call UpdateItem