Beispielcode für das Setup für die Neuverteilung

[Das dieser Seite zugeordnete Feature Windows Media Format 11 SDK ist ein Legacyfeature. Es wurde von Source Reader und Sink Writer abgelöst. Source Reader und Sink Writer wurden für Windows 10 und Windows 11 optimiert. Microsoft empfiehlt dringend, dass neuer Code nach Möglichkeit quellleser und Senkenschreiber anstelle des Windows Media Format 11 SDK verwendet. Microsoft schlägt vor, dass vorhandener Code, der die Legacy-APIs verwendet, so umgeschrieben wird, dass nach Möglichkeit die neuen APIs verwendet werden.]

Wenn Sie das Umverteilungspaket in Ihre Anwendung einschließen, können Sie das Flag /Q:A verwenden, wenn Sie das Umverteilungspaket in Ihrer Setuproutine aufrufen. Dadurch wird die Benutzeroberfläche unterdrückt.

Der folgende Beispielcode kann in Ihrer Setuproutine verwendet werden, um die Neuverteilungspakete im stillen Modus auszuführen und Ihre Setuproutine zu benachrichtigen, wenn der Computer neu gestartet werden muss.

#include <windows.h>
#include <shlwapi.h>
#include <TCHAR.H>

// Link to shlwapi.lib.
#pragma comment(lib, "shlwapi")

#define MAX_TIMEOUT_MS 30 * 60 * 1000
#define TIME_INCREMENT 250

// Prototypes
BOOL InstallWMRedist( BOOL );
BOOL SystemNeedsReboot( void );

void main( void )
{
    InstallWMRedist( TRUE );

    printf("Setup is complete.\n");

    if( SystemNeedsReboot() )
    {
        // Write some code here to ensure that your application will 
        // restart the computer, delay dll registrations, and so on 
        // until after the restart, where possible. For example, 
        // set a global flag for use by the application.
        printf("A reboot IS required.");
    }
    else
    {
        printf("A reboot IS NOT required...");
    }
    
}

///////////////////////////////////////////////////////////////////////
// 
// InstallWMRedist
//
// fWaitForCompletion: If TRUE the function waits for completion.
//
///////////////////////////////////////////////////////////////////////
BOOL InstallWMRedist( BOOL fWaitForCompletion )
{
    STARTUPINFO StartUpInfo;
    PROCESS_INFORMATION ProcessInfo;

    StartUpInfo.cb = sizeof( StartUpInfo );
    StartUpInfo.lpReserved = NULL;
    StartUpInfo.dwFlags = 0;
    StartUpInfo.cbReserved2 = 0;
    StartUpInfo.lpReserved2 = NULL; 
    StartUpInfo.lpDesktop = NULL;
    StartUpInfo.lpTitle = NULL;
    StartUpInfo.dwX = 0;
    StartUpInfo.dwY = 0;
    StartUpInfo.dwXSize = 0;
    StartUpInfo.dwYSize = 0;
    StartUpInfo.dwXCountChars = 0;
    StartUpInfo.dwYCountChars = 0;
    StartUpInfo.dwFillAttribute = 0;
    StartUpInfo.dwFlags = 0;
    StartUpInfo.wShowWindow = 0;
    StartUpInfo.hStdInput = NULL;
    StartUpInfo.hStdOutput = NULL;
    StartUpInfo.hStdError = NULL;

    // Run the installer with the Quiet for All dialogs and Reboot:Never 
    // flags. The installation should be silent, and the setup routine  
    // will be notified about whether the computer must be restarted.

    if( !CreateProcess( _T("c:\\temp\\WMFDist.exe"), 
                        _T("c:\\temp\\WMFDist.exe /Q:A"), 
                        NULL, NULL, FALSE, 0, NULL, NULL, 
                        &StartUpInfo, &ProcessInfo ) )
    {
        DWORD myError = GetLastError();
        return( FALSE );
    }

    CloseHandle( ProcessInfo.hThread );

    if( fWaitForCompletion )
    {
        DWORD dwTimePassed = 0;
        while( TRUE )
        {
            if( WAIT_TIMEOUT != WaitForMultipleObjects( 1, 
                                       &ProcessInfo.hProcess, 
                                       FALSE, TIME_INCREMENT ) )
                break;

            if( dwTimePassed > MAX_TIMEOUT_MS )
            {
                TerminateProcess( ProcessInfo.hProcess, E_FAIL );
                break;
            }
            dwTimePassed += TIME_INCREMENT;
        }
    }
    CloseHandle( ProcessInfo.hProcess);

    return( TRUE );
}

///////////////////////////////////////////////////////////////////////
//
// Used to determine whether the system should be restarted.
//
///////////////////////////////////////////////////////////////////////
BOOL SystemNeedsReboot( void )
{
    BOOL fNeedExists = FALSE;
    OSVERSIONINFO osvi;

    osvi.dwOSVersionInfoSize = sizeof( OSVERSIONINFO );
    GetVersionEx( &osvi );

    if( VER_PLATFORM_WIN32_NT != osvi.dwPlatformId )
    {
        TCHAR szIniPath[MAX_PATH];

        GetWindowsDirectory(szIniPath, sizeof(szIniPath)/sizeof(TCHAR));

        // PathAppend automatically inserts a backslash if needed.
        PathAppend( szIniPath, _T("wininit.ini") );

        if( 0xFFFFFFFF != GetFileAttributes( szIniPath ) )
        {
            HANDLE hFile = INVALID_HANDLE_VALUE;

            hFile = CreateFile(
                szIniPath, 
                GENERIC_READ, 
                FILE_SHARE_READ | FILE_SHARE_WRITE, 
                NULL,
                OPEN_EXISTING,
                0, NULL
                );

            if (hFile != INVALID_HANDLE_VALUE)
            {
                DWORD cbFileSize = GetFileSize(hFile, NULL);

                if ((cbFileSize > 0) && (cbFileSize != INVALID_FILE_SIZE))
                {
                    fNeedExists = TRUE;
                }
                CloseHandle(hFile);
            }
        }
    }
    else
    {
        HKEY hKey = NULL;

        if( ERROR_SUCCESS == RegOpenKeyEx( HKEY_LOCAL_MACHINE, 
                _T("System\\CurrentControlSet\\Control\\Session Manager"), 
                 0, KEY_READ, &hKey ) )
        {
            if( ERROR_SUCCESS == RegQueryValueEx( hKey, 
                _T("PendingFileRenameOperations"), 
                 NULL, NULL, NULL, NULL))
            {
                fNeedExists = TRUE;
            }

            RegCloseKey( hKey );
        }
    }

    return( fNeedExists );
}

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