Example Code for Redistribution Setup

[The feature associated with this page, Windows Media Format 11 SDK, is a legacy feature. It has been superseded by Source Reader and Sink Writer. Source Reader and Sink Writer have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use Source Reader and Sink Writer instead of Windows Media Format 11 SDK, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

When including the redistribution package in your application, you can use the /Q:A flag when you invoke the redistribution package in your setup routine. This suppresses the user interface (UI).

The following example code can be used in your setup routine to run the redistribution packages in quiet mode and notify your setup routine when the computer must be restarted.

#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 );
}

Related topics

Software Redistribution