Added global support for the (so far undocumented) confirm_exit config key

svn-id: r27788

README

@@ -1575,6 +1575,8 @@ The following keywords are recognized:
                                  super2xsai, supereagle, advmame2x, advmame3x,
                                  hq2x, hq3x, tv2x, dotmatrix)
 
+        confirm_exit    bool     Ask for confirmation by the user before quitting
+                                 (SDL backend only).
         cdrom           number   Number of CD-ROM unit to use for audio. If
                                  negative, don't even try to access the CD-ROM.
         joystick_num    number   Number of joystick device to use for input
@@ -1600,8 +1602,8 @@ The following keywords are recognized:
         midi_gain       number   The MIDI gain (0-1000) (default: 100) (Only
                                  supported by some MIDI drivers.)
 
-        copy_protection bool     Enable copy protection in SCUMM games, when
-                                 ScummVM disables it by default.
+        copy_protection bool     Enable copy protection in certain games, in those
+                                 cases where ScummVM disables it by default.
         demo_mode       bool     Start demo in Maniac Mansion
         alt_intro       bool     Use alternative intro for CD versions of
                                  Beneath a Steel Sky and Flight of the Amazon

backends/events/default/default-events.cpp

@@ -26,8 +26,10 @@
 #if !defined(DISABLE_DEFAULT_EVENTMANAGER)
 
 #include "common/stdafx.h"
+#include "common/config-manager.h"
 #include "common/system.h"
 #include "backends/events/default/default-events.h"
+#include "gui/message.h"
 
 DefaultEventManager::DefaultEventManager(OSystem *boss) :
 	_boss(boss),
@@ -93,7 +95,15 @@ bool DefaultEventManager::pollEvent(Common::Event &event) {
 			break;
 
 		case Common::EVENT_QUIT:
-			_shouldQuit = true;
+			if (ConfMan.getBool("confirm_exit")) {
+				GUI::MessageDialog alert("Do you really want to quit?", "Yes", "No");
+				if (alert.runModal() == GUI::kMessageOK)
+					_shouldQuit = true;
+				else
+					result = false;
+
+			} else
+				_shouldQuit = true;
 			break;
 
 		default:

engines/scumm/input.cpp

@@ -188,10 +188,7 @@ void ScummEngine::parseEvents() {
 			break;
 
 		case Common::EVENT_QUIT:
-			if (ConfMan.getBool("confirm_exit"))
-				confirmExitDialog();
-			else
-				_quit = true;
+			_quit = true;
 			break;
 
 		default: