🚀 go-pugleaf

Remy Lebeau (TeamB) wrote:

>"Jeff Douglass" <.> wrote in message
>news:3f8dd4e4$1@newsgroups.borland.com...
>> However if I close the app using End Process from withing
>> the task manager my break routine is not getting called and
>> therefor the app's shutdown cleanup stuff I trigger from within
>> my break handler does not get called. Any ideas on what is
>> going on? What is best way to handle the closing of a console
>> mode app via the Task Manager?
>
>There isn't any.  The "End Process" feature is a brute-force termination.
>You can't prevent or detect it.

It looks like you _can_ detect it.
I just added a log to my handler, and it writes a 2 (CTRL_CLOSE_EVENT)
when I EndProcess from the XPHome Task Manager.

The Code:
	SetConsoleCtrlHandler( &CtrlHandler, TRUE);

static BOOL _stdcall CtrlHandler(DWORD fdwCtrlType)
{
#if LogHandler
	DWORD	written;
	HANDLE	h =
CreateFile("Log.Log",GENERIC_WRITE,0,NULL,OPEN_ALWAYS,FILE_FLAG_WRITE_THROUGH,NULL);
	if( h != INVALID_HANDLE_VALUE )
	{	SetFilePointer(h,0,NULL,FILE_END);

WriteFile(h,&fdwCtrlType,sizeof(fdwCtrlType),&written,NULL);
		CloseHandle( h );
	};
#endif

    switch (fdwCtrlType)
    { 
	/* Handle the CTRL+C signal. */ 
	case CTRL_C_EVENT: 
		push_key(CtrlC);	/*  pass Ctrl-C to app  */
		return TRUE;
 
	/* CTRL+CLOSE: confirm that the user wants to exit. */
	/* Ctrl_Close _needs_ to return False because I don't want
	 a dialog poping up.
	Other events return True because I handled them this time,
	 and disabled myself so subsequent events will be false.*/
	case CTRL_CLOSE_EVENT:
		SetConsoleCtrlHandler( &CtrlHandler, FALSE);
		return FALSE;
 
	case CTRL_LOGOFF_EVENT:
	case CTRL_SHUTDOWN_EVENT: 
	case CTRL_BREAK_EVENT:
		SetConsoleCtrlHandler( &CtrlHandler, FALSE);
		return TRUE;	/*  we handled it this time, say so.*/
	default:
		return FALSE;
    }; 
}
The values.
#define CTRL_C_EVENT        0
#define CTRL_BREAK_EVENT    1
#define CTRL_CLOSE_EVENT    2
// 3 is reserved!
// 4 is reserved!
#define CTRL_LOGOFF_EVENT   5
#define CTRL_SHUTDOWN_EVENT 6