C++ Win32控制台应用程序捕捉关闭事件

#include
#include
bool ctrlhandler( DWORD fdwctrltype )
{
    switch( fdwctrltype )
    {
    // handle the ctrl-c signal.
    case CTRL_C_EVENT:
        printf( "ctrl-c event\n\n" );
        return( true );
    // ctrl-close: confirm that the user wants to exit.
    case CTRL_CLOSE_EVENT:
        printf( "ctrl-close event\n\n" );
        return( true );
    // pass other signals to the next handler.
    case CTRL_BREAK_EVENT:
        printf( "ctrl-break event\n\n" );
        return false;
    case CTRL_LOGOFF_EVENT:
        printf( "ctrl-logoff event\n\n" );
        return false;
    case CTRL_SHUTDOWN_EVENT:
        printf( "ctrl-shutdown event\n\n" );
        return false;
    default:
        return false;
    }
}
void main( void )
{
    if( SetConsoleCtrlHandler( (PHANDLER_ROUTINE) ctrlhandler, true ) )
    {
        printf( "\nthe control handler is installed.\n" );
        printf( "\n -- now try pressing ctrl+c or ctrl+break, or" );
        printf( "\n try logging off or closing the console...\n" );
        printf( "\n(...waiting in a loop for events...)\n\n" );
       while( 1 ){ Sleep(100);}
    }
else
    printf( "\nerror: could not set control handler");
}