Girando in rete ho trovato una versione Pre-Release beta di Windows 7, non il classico fake. Questa versione è sicuramente originale in quanto è la più scaricata su tutte e poi perchè l'ho testata personalmente. L' ho installata su VmWare e.... adesso vi darò i link per alcune immagini e per il file shell32.dll. ATTENZIONE: L'immagine di sopra, invece, è un concept modificato, mentre tutte le immagini, i file e il link di sotto sono originali.

Pagina da dove scaricare il file .torrent di Windows 7 Pre-Release (build 6519)

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Download shell32.dll di Windows 7 Pre-Release

Per sicurezza ero anche andato a controllare le azioni associate ai file "cartella" ( Opzioni Cartella>Tipi di File). Nulla. Era tutto ok. La soluzione, al solito era tra le pieghe di Google ed ho pensato di condividerla.

Basta digitare

START > Esegui
regsvr32 /i shell32.dll

Semplice ed indolore: tutto torna alla normalità. Dal sito Microsoft:

È possibile utilizzare lo strumento Regsvr32 (Regsvr32.exe) per registrare e annullare la registrazione di controlli OLE, quali file DLL (Dynamic Link Library) o OCX (ActiveX Control) autoregistrabili. Tale operazione può risultare necessaria per risolvere alcuni problemi relativi a Windows, Microsoft Internet Explorer o ad altri programmi.

Di seguito sono riportate le opzioni della riga di comando per RegSvr32.exe:

Regsvr32 [/u] [/n] [/i[:rigacmd]] nomedll

/i - Richiama DllInstall con una [rigacmd] opzionale;

Quando si utilizza Regsvr32.exe, il programma prova a caricare il componente e a richiamare la relativa funzione DLLSelfRegister. La corretta esecuzione del comando è indicata da un'apposita finestra di dialogo. In caso contrario viene restituito un messaggio di errore che può includere un codice di errore Win32.

Folder Options can also be found in Windows Explorer by going to Tools in the menu bar. My problem can be described as follows: I didn't have my icon set properly for html. So I changed it.

I use Firefox, so under Folder Options, I went to File Types, selected html, and deleted the entry. That essentially took away any predefined behaviour for it. Then, I tried opening an html (which at this point certainly didn't have an icon set). The "open with" dialog showed, and I selected Firefox. That automatically generated an icon, but it was the generic "piece of paper" icon with the Firefox icon on top. To change it, I went back to the html entry in File Types and clicked Advanced. From there, I clicked Change Icon. At that point, I had to find the location of Firefox (the installation path). By selecting Firefox.exe, a few icons were presented to me. I selected the one I wanted, and all was well.

If you know which icon you want to use, and have an idea of which program that icon would be associated with, then it's fairly easy to change to that icon. The initial problem I had in this post had to with getting the generic icon that Windows makes for new file types after opening one of them for the first time.

Since that post, I had decided it's easier to deal with Windows by starting fresh. Of course, you'll lose any information on how to deal with the file type in question by using the method I just described. But in most cases, it doesn't really matter if you lose your "open with list".

Thanks Alvare for bringing this topic back up!

P.S. Sometimes the icons you're looking for are in dll files. Windows XP looks in Shell32.dll for most of its general purpose icons. There are tons of replacement Shell32.dll files out there which can change the look and feel of your Windows XP. Look it up if you're interested. Just make sure you only replace an important file like Shell32.dll if you know you're sure there won't be any problems.

There is an undocumented api - "Control_RunDLL" in the Shell32.dll which can be used to launch control panel applications. You've to pass the filename of control Panel application and it will be launched. See the following code block.

// Load the Shell32 dll.
HINSTANCE hShell32 = LoadLibrary(_T("Shell32.dll"));

// Typedef for function pointer for Control_RunDLL.
typedef void( CALLBACK * CONTROL_RUNDLL_FN_PTR)( HWND hwnd,
                                                 HINSTANCE hinst,
                                                 LPSTR lpszCmdLine,
                                                 int nCmdShow );

// Get the function pointer of - Control_RunDLL.
CONTROL_RUNDLL_FN_PTR pControl_RunDLL =
  (CONTROL_RUNDLL_FN_PTR)GetProcAddress( hShell32,
                                         _T("Control_RunDLL"));

// Now call the function and launch the ControlPanel App.
(*pControl_RunDLL)( 0, // hwnd
                    0, // Hinstance
                    _T("sysdm.cpl"), // ControlPanelApp filename.
                    SW_NORMAL );     // Show Normal

The control panel applications are located inside your windows directory. If you search the windows directory for "*.cpl" you can find a number of files. Each file is a control panel application. Even though the file extension is ".cpl", its a dll. From the name itself you can interpret which control panel application it refers to. Go on, have a try. ;)

For launching some control panel apps, you've to provide valid hwnd and hinstance. Then only it will be shown. For instance - timedate.cpl.

Targeted Audience - Intermediate.

[sourcecode language='cpp']int _tmain()
{
    // Creates a typedef
    typedef BOOL ( WINAPI *GetFileNameFromBrowse )( HWND hwnd,
                                                    LPWSTR pszFilePath,
                                                    UINT cchFilePath,
                                                    LPCWSTR pszWorkingDir,
                                                    LPCWSTR pszDefExt,
                                                    LPCWSTR pszFilters,
                                                    LPCWSTR szTitle );

    // Path buffer, specifies starting directory and on successful return
    // from open dialog also holds the selected file name
    wchar_t wszPath[MAX_PATH] = L"D:\\";

    // Load shell32 dll
    HMODULE hModule = LoadLibrary( "Shell32.dll" );
if( !hModule )
{
return 1;
}

    // Get procedure address
    GetFileNameFromBrowse GetFileNameFromBrowsePtr = ( GetFileNameFromBrowse )GetProcAddress( hModule, "GetFileNameFromBrowse" );

    // Show browse dialog
    if( GetFileNameFromBrowsePtr && GetFileNameFromBrowsePtr( 0, wszPath, MAX_PATH, 0, 0, L"*.*", L"Nibu Open" ))
    {
       MessageBoxW( 0, wszPath, L"You selected", MB_OK | MB_ICONINFORMATION );
    }

    // Free loaded library
    FreeLibrary( hModule );

return 0;

}// End _tmain[/sourcecode]