How to handle closing console window?

[jirina]

I am trying to handle various control signals when my application is running calculations. For historical reasons, I am not calling SetConsoleCtrlHandler directly from the Fortran code, but I have a DLL written in C++ and I call a function from this DLL.

This is what I have in Fortran:

[fxfortran]         integer*4 function InitSignalProcessing ( )
         !dec$ attributes stdcall, dllimport, decorate, alias: "InitSignalProcessing" :: InitSignalProcessing
         end function
         ...
         status = InitSignalProcessing ( )[/fxfortran]

C++ code is:

[cpp]__declspec(dllexport) int __stdcall InitSignalProcessing( void ) {
	return (int) SetConsoleCtrlHandler( (PHANDLER_ROUTINE) CtrlHandler, TRUE );
}

BOOL CtrlHandler( DWORD fdwCtrlType )
{
	BOOL ret = TRUE;

	switch ( fdwCtrlType ) {
		case CTRL_C_EVENT:
			printf( "\n\n Stopping due to Ctrl-C.\n" );
			ret = TRUE;

		case CTRL_CLOSE_EVENT:
			printf( "\n\n Stopping due to closing the window.\n" );
			ret = TRUE;
		
		case CTRL_BREAK_EVENT:
			printf( "\n\n Stopping due to Ctrl-Break.\n" );
			ret = TRUE;

		// Pass other signals to the next handler - ret = FALSE

		case CTRL_LOGOFF_EVENT:
			printf( "\n\n Stopping due to logoff.\n" );
			ret = FALSE;

		case CTRL_SHUTDOWN_EVENT:
			printf( "\n\n Stopping due to system shutdown.\n" );
			ret = FALSE;
		
		default:
			printf( "\n\n Stopping due to unknown event.\n" );
			ret = FALSE;
	}

	return ret;
}[/cpp]

I am particularly interested in CTRL_CLOSE_EVENT. After I click the close button of my application's console window, I get the message "Stopping due to closing the window", see the code above, and I am offered to end the task; however, this works only in Windows XP. In Windows 7, the console window is immediately closed, so it loooks like the corresponding signal is not handled.

To confirm this unwanted functionality, I wrote a small application based on IanH's code from this thread, and the behavior is the same - the console window shows the message, but is closed immediately.

Could it be that my Windows 7 are 64-bit? Or is there any other reason why the console window does not wait for user's input after the user closes it?

[Steven_L_Intel1]

I don't have an answer for you, but you might read through this thread which is trying to do something similar.