bug-fix, Issue #2: prevent SDL2 from installing keyboard shortcuts (Command+Q, etc.) on OSX hosts, as they interfere with guest OS use

BasiliskII/src/MacOSX/BasiliskII.xcodeproj/project.pbxproj

diff --git a/BasiliskII/src/MacOSX/BasiliskII.xcodeproj/project.pbxproj b/BasiliskII/src/MacOSX/BasiliskII.xcodeproj/project.pbxproj
index f51fe00..52bebbe 100644
--- a/BasiliskII/src/MacOSX/BasiliskII.xcodeproj/project.pbxproj
+++ b/BasiliskII/src/MacOSX/BasiliskII.xcodeproj/project.pbxproj
@@ -100,6 +100,8 @@
 		7539E2A81F23CB9B006B2DF2 /* cpustbl.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 7539E2A31F23CB9B006B2DF2 /* cpustbl.cpp */; };
 		7539E2A91F23CB9B006B2DF2 /* defs68k.c in Sources */ = {isa = PBXBuildFile; fileRef = 7539E2A41F23CB9B006B2DF2 /* defs68k.c */; };
 		7539E2AB1F23CDB7006B2DF2 /* Info.plist in Resources */ = {isa = PBXBuildFile; fileRef = 7539E2AA1F23CDB7006B2DF2 /* Info.plist */; };
+		756C1B341F252FC100620917 /* utils_macosx.mm in Sources */ = {isa = PBXBuildFile; fileRef = 756C1B331F252FC100620917 /* utils_macosx.mm */; };
+		756C1B391F25306A00620917 /* AppKit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 756C1B381F25306A00620917 /* AppKit.framework */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -316,6 +318,9 @@
 		7539E2A31F23CB9B006B2DF2 /* cpustbl.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = cpustbl.cpp; sourceTree = "<group>"; };
 		7539E2A41F23CB9B006B2DF2 /* defs68k.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; path = defs68k.c; sourceTree = "<group>"; };
 		7539E2AA1F23CDB7006B2DF2 /* Info.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
+		756C1B321F252FC100620917 /* utils_macosx.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = utils_macosx.h; sourceTree = "<group>"; };
+		756C1B331F252FC100620917 /* utils_macosx.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = utils_macosx.mm; sourceTree = "<group>"; };
+		756C1B381F25306A00620917 /* AppKit.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = AppKit.framework; path = System/Library/Frameworks/AppKit.framework; sourceTree = SDKROOT; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -323,6 +328,7 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				756C1B391F25306A00620917 /* AppKit.framework in Frameworks */,
 				752F27141F251B5C001032B4 /* SDL2.framework in Frameworks */,
 				752F26FB1F240E69001032B4 /* IOKit.framework in Frameworks */,
 				752F26F91F240E51001032B4 /* Foundation.framework in Frameworks */,
@@ -335,6 +341,7 @@
 		752F26F71F240E51001032B4 /* Frameworks */ = {
 			isa = PBXGroup;
 			children = (
+				756C1B381F25306A00620917 /* AppKit.framework */,
 				752F26FA1F240E69001032B4 /* IOKit.framework */,
 				752F26F81F240E51001032B4 /* Foundation.framework */,
 			);
@@ -456,6 +463,8 @@
 				7539E0141F23B25A006B2DF2 /* HowTo.html */,
 				7539E29C1F23C83F006B2DF2 /* sys_darwin.cpp */,
 				7539E02B1F23B25A006B2DF2 /* ToDo.html */,
+				756C1B321F252FC100620917 /* utils_macosx.h */,
+				756C1B331F252FC100620917 /* utils_macosx.mm */,
 				7539E02E1F23B25A006B2DF2 /* Versions.html */,
 			);
 			name = MacOSX;
@@ -831,6 +840,7 @@
 				7539E1711F23B25A006B2DF2 /* rom_patches.cpp in Sources */,
 				7539E1281F23B25A006B2DF2 /* sigsegv.cpp in Sources */,
 				7539E1A21F23B25A006B2DF2 /* readcpu.cpp in Sources */,
+				756C1B341F252FC100620917 /* utils_macosx.mm in Sources */,
 				7539E2701F23B32A006B2DF2 /* tinyxml2.cpp in Sources */,
 				7539E28F1F23C56F006B2DF2 /* ether_dummy.cpp in Sources */,
 				7539E1721F23B25A006B2DF2 /* rsrc_patches.cpp in Sources */,

BasiliskII/src/MacOSX/utils_macosx.mm

diff --git a/BasiliskII/src/MacOSX/utils_macosx.mm b/BasiliskII/src/MacOSX/utils_macosx.mm
index b653638..4dd359b 100644
--- a/BasiliskII/src/MacOSX/utils_macosx.mm
+++ b/BasiliskII/src/MacOSX/utils_macosx.mm
@@ -28,3 +28,15 @@
 	fn();
 	[pool release];
 }
+
+void disable_SDL2_macosx_menu_bar_keyboard_shortcuts() {
+	for (NSMenuItem * menu_item in [NSApp mainMenu].itemArray) {
+		if (menu_item.hasSubmenu) {
+			for (NSMenuItem * sub_item in menu_item.submenu.itemArray) {
+				sub_item.keyEquivalent = @"";
+				sub_item.keyEquivalentModifierMask = 0;
+			}
+		}
+	}
+}
+

BasiliskII/src/Unix/main_unix.cpp

diff --git a/BasiliskII/src/Unix/main_unix.cpp b/BasiliskII/src/Unix/main_unix.cpp
index f8dc743..c80f95f 100644
--- a/BasiliskII/src/Unix/main_unix.cpp
+++ b/BasiliskII/src/Unix/main_unix.cpp
@@ -522,6 +522,18 @@
 		QuitEmulator();
 	}
 	atexit(SDL_Quit);
+
+#if __MACOSX__
+	// On Mac OS X hosts, SDL2 will create its own menu bar.  This is mostly OK,
+	// except that it will also install keyboard shortcuts, such as Command + Q,
+	// which can interfere with keyboard shortcuts in the guest OS.
+	//
+	// HACK: disable these shortcuts, while leaving all other pieces of SDL2's
+	// menu bar in-place.
+	extern void disable_SDL2_macosx_menu_bar_keyboard_shortcuts();
+	disable_SDL2_macosx_menu_bar_keyboard_shortcuts();
+#endif
+	
 #endif
 
 	// Init system routines