windows 控制台程序 响应 Ctrl+C

#include <windows.h>
#include <stdio.h>

BOOL CtrlHandler( DWORD fdwCtrlType )
{
switch( fdwCtrlType )
{
// Handle the CTRL-C signal.
case CTRL_C_EVENT:
printf( "Ctrl-C event\n\n" );
Beep( 750, 300 );
return( TRUE );

// CTRL-CLOSE: confirm that the user wants to exit.
case CTRL_CLOSE_EVENT:
Beep( 600, 200 );
printf( "Ctrl-Close event\n\n" );
return( TRUE );

// Pass other signals to the next handler.
case CTRL_BREAK_EVENT:
Beep( 900, 200 );
printf( "Ctrl-Break event\n\n" );
return FALSE;

case CTRL_LOGOFF_EVENT:
Beep( 1000, 200 );
printf( "Ctrl-Logoff event\n\n" );
return FALSE;

case CTRL_SHUTDOWN_EVENT:
Beep( 750, 500 );
printf( "Ctrl-Shutdown event\n\n" );
return FALSE;

default:
return FALSE;
}
}

int 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 ){ }
}
else
{
printf( "\nERROR: Could not set control handler");
return 1;
}
return 0;
}