Shared change with SMA, Low Level Hooks to disable Window's system shortcuts, try to press Windows Key when SM has focus :D

src/StepMania.cpp

@@ -70,6 +70,7 @@
 
 #if defined(WIN32)
 #include <windows.h>
+#include "archutils/Win32/AppInstance.h"	// used by SetWindowsHookEx -Aldo
 #endif
 
 void ShutdownGame();
@@ -934,6 +935,32 @@ static void ApplyLogPreferences()
 
 static LocalizedString COULDNT_OPEN_LOADING_WINDOW( "StepMania", "Couldn't open any loading windows." );
 
+#if defined(WIN32)
+// Low Level hooks go here, I only added Windows Key, but letting the player choose which system shortcuts
+// wants to get disabled via PREFSMAN would be nice -Aldo
+LRESULT CALLBACK SpecialKeysHook(int code,WPARAM wparam,LPARAM lparam)
+{
+	if( HOOKS->AppHasFocus() )	// only disable system shortcuts when the game has focus
+	{
+		PKBDLLHOOKSTRUCT key = (PKBDLLHOOKSTRUCT)lparam;
+
+		switch(wparam)
+		{
+		case WM_KEYDOWN:
+		case WM_KEYUP:
+		case WM_SYSKEYDOWN:
+		case WM_SYSKEYUP:
+			if(key->vkCode==VK_LWIN || key->vkCode==VK_RWIN)
+			{
+				return 1;
+			}
+		}
+	}
+
+	return CallNextHookEx(0,code,wparam,lparam);
+}
+#endif
+
 int main(int argc, char* argv[])
 {
 	RageThreadRegister thread( "Main thread" );
@@ -1124,6 +1151,23 @@ int main(int argc, char* argv[])
 	StoreActualGraphicOptions();
 	LOG->Info( "%s", GetActualGraphicOptionsString().c_str() );
 
+#if defined(WIN32)
+	// Apply Low Level hooks just after creating the display, so we have a valid
+	// HINSTANCE, rather than a NULL one -Aldo
+	AppInstance inst;
+	HHOOK hook;
+	hook = SetWindowsHookEx(
+		WH_KEYBOARD_LL,
+		SpecialKeysHook,
+		inst.Get(),
+		0
+	);
+	if(!hook)
+	{
+		LOG->Warn("SetWindowsHookEx: Could not create hook (Error %d).", GetLastError());
+	}
+#endif
+
 	SONGMAN->PreloadSongImages();
 
 	/* Input handlers can have dependences on the video system so