独立的代码片段整理 留待以后组织成一个公共类

consloe 程序截获关闭事件

#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" );
        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"); 
}