Detecting Setup Status for Windows Media Setup

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 It has been superseded by MediaPlayer.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

The following code can be used with the Windows Media Player redistribution packages. The installation status is stored in the InstallResult registry entry under the following subkey:

HKEY_CURRENT_USER\Software\Microsoft\MediaPlayer\Setup

The InstallResultregistry entry has the following form.

Here is example C++ code that could be incorporated into a calling setup application. This code will set the fSuccess and fRebootNeeded variables to true or false, as appropriate, based on the HRESULT value written by Windows Media Player Setup in the component redistribution package.

#include <windows.h>
#include <stdio.h>
 
// If NS_S_REBOOT_REQUIRED is undefined, use 0xD2AF9.
#ifndef NS_S_REBOOT_REQUIRED
#define NS_S_REBOOT_REQUIRED       0xd2af9
#endif
 
int main( void )
{
    HKEY hKey = NULL;
    BOOL fSuccess = FALSE;
    BOOL fRebootNeeded = FALSE;
 
if( ERROR_SUCCESS == RegOpenKeyExA( 
                         HKEY_CURRENT_USER, 
                         "Software\\Microsoft\\MediaPlayer\\Setup", 
                         0, KEY_QUERY_VALUE, &hKey ))
    {
        char szResult[64];
        DWORD dwResult = sizeof( szResult );
 
if( ERROR_SUCCESS == RegQueryValueExA( 
                         hKey, "InstallResult", NULL, NULL, 
                         (LPBYTE)szResult, &dwResult ) )
        {
            sscanf_s( szResult, "%x", &dwResult );
            fSuccess = SUCCEEDED( dwResult );
            fRebootNeeded = ( NS_S_REBOOT_REQUIRED == dwResult );
        }
 
        RegCloseKey( hKey );
    }
 
    if( fSuccess )
    {
        printf( "Setup Succeeded..." );
        if( fRebootNeeded )
            printf( "A restart IS required...\n" );
        else
            printf( "A restart IS NOT required...\n" );
    }
    else
    {
        printf( "Setup Failed..." );
        if( fRebootNeeded )
            printf( "A restart IS required...\n" );
        else
            printf( "A restart IS NOT required...\n" );
    }
 
    return 0;
}

Related topics

Redistributing Windows Media Player Software