Merge pull request #25 from jameson-ernst/master

Marshaling refinements and SDL_ShowMessageBox

.gitignore

@@ -1,2 +1,3 @@
 bin/
+obj/
 *.userprefs

src/LPUtf8StrMarshaler.cs

@@ -38,7 +38,7 @@ namespace SDL2
 			_leaveAllocatedInstance = new LPUtf8StrMarshaler(true),
 			_defaultInstance = new LPUtf8StrMarshaler(false);
 
-		private static ICustomMarshaler GetInstance(string cookie)
+		public static ICustomMarshaler GetInstance(string cookie)
 		{
 			switch (cookie)
 			{

src/SDL2.cs

@@ -366,27 +366,149 @@ namespace SDL2
 		#endregion
 		
 		#region SDL_messagebox.h
-		
+
+		[Flags]
 		public enum SDL_MessageBoxFlags : uint
 		{
-			SDL_MESSAGEBOX_ERROR		= 0x00000010,
+			SDL_MESSAGEBOX_ERROR        = 0x00000010,
-			SDL_MESSAGEBOX_WARNING		= 0x00000020,
+			SDL_MESSAGEBOX_WARNING      = 0x00000020,
-			SDL_MESSAGEBOX_INFORMATION	= 0x00000040
+			SDL_MESSAGEBOX_INFORMATION  = 0x00000040
 		}
-		
+
+		[Flags]
+		public enum SDL_MessageBoxButtonFlags : uint
+		{
+			SDL_MESSAGEBOX_BUTTON_RETURNKEY_DEFAULT = 0x00000001,
+			SDL_MESSAGEBOX_BUTTON_ESCAPEKEY_DEFAULT = 0x00000002
+		}
+
+		[StructLayout(LayoutKind.Sequential)]
+		private struct INTERNAL_SDL_MessageBoxButtonData
+		{
+			public SDL_MessageBoxButtonFlags flags;
+			public int buttonid;
+			public IntPtr text; /* The UTF-8 button text */
+		}
+
+		[StructLayout(LayoutKind.Sequential)]
+		public struct SDL_MessageBoxButtonData
+		{
+			public SDL_MessageBoxButtonFlags flags;
+			public int buttonid;
+			public string text; /* The UTF-8 button text */
+		}
+
+		[StructLayout(LayoutKind.Sequential)]
+		public struct SDL_MessageBoxColor
+		{
+			public byte r, g, b;
+		}
+
+		public enum SDL_MessageBoxColorType
+		{
+			SDL_MESSAGEBOX_COLOR_BACKGROUND,
+			SDL_MESSAGEBOX_COLOR_TEXT,
+			SDL_MESSAGEBOX_COLOR_BUTTON_BORDER,
+			SDL_MESSAGEBOX_COLOR_BUTTON_BACKGROUND,
+			SDL_MESSAGEBOX_COLOR_BUTTON_SELECTED,
+			SDL_MESSAGEBOX_COLOR_MAX
+		}
+
+		[StructLayout(LayoutKind.Sequential)]
+		public struct SDL_MessageBoxColorScheme
+		{
+			[MarshalAs(UnmanagedType.ByValArray, ArraySubType = UnmanagedType.Struct, SizeConst = (int)SDL_MessageBoxColorType.SDL_MESSAGEBOX_COLOR_MAX)]
+				public SDL_MessageBoxColor[] colors;
+		}
+
+		[StructLayout(LayoutKind.Sequential)]
+		private struct INTERNAL_SDL_MessageBoxData
+		{
+			public SDL_MessageBoxFlags flags;
+			public IntPtr window;                 /* Parent window, can be NULL */
+			public IntPtr title;              /* UTF-8 title */
+			public IntPtr message;            /* UTF-8 message text */
+			public int numbuttons;
+			public IntPtr buttons;
+			public IntPtr colorScheme;   /* Can be NULL to use system settings */
+		}
+
+		[StructLayout(LayoutKind.Sequential)]
+		public struct SDL_MessageBoxData
+		{
+			public SDL_MessageBoxFlags flags;
+			public IntPtr window;                 /* Parent window, can be NULL */
+			public string title;              /* UTF-8 title */
+			public string message;            /* UTF-8 message text */
+			public int numbuttons;
+			public SDL_MessageBoxButtonData[] buttons;
+			public SDL_MessageBoxColorScheme? colorScheme;   /* Can be NULL to use system settings */
+		}
+
+		[DllImport(nativeLibName, EntryPoint = "SDL_ShowMessageBox", CallingConvention = CallingConvention.Cdecl)]
+		private static extern int INTERNAL_SDL_ShowMessageBox([In()] ref INTERNAL_SDL_MessageBoxData messageboxdata, out int buttonid);
+
+		public static unsafe int SDL_ShowMessageBox([In()] ref SDL_MessageBoxData messageboxdata, out int buttonid)
+		{
+			var utf8 = LPUtf8StrMarshaler.GetInstance(null);
+
+			var data = new INTERNAL_SDL_MessageBoxData()
+			{
+				flags = messageboxdata.flags,
+				window = messageboxdata.window,
+				title = utf8.MarshalManagedToNative(messageboxdata.title),
+				message = utf8.MarshalManagedToNative(messageboxdata.message),
+				numbuttons = messageboxdata.numbuttons,
+			};
+
+			var buttons = new INTERNAL_SDL_MessageBoxButtonData[messageboxdata.numbuttons];
+			for (int i = 0; i < messageboxdata.numbuttons; i++)
+			{
+				buttons[i] = new INTERNAL_SDL_MessageBoxButtonData()
+				{
+					flags = messageboxdata.buttons[i].flags,
+					buttonid = messageboxdata.buttons[i].buttonid,
+					text = utf8.MarshalManagedToNative(messageboxdata.buttons[i].text),
+				};
+			}
+
+			if (messageboxdata.colorScheme != null)
+			{
+				data.colorScheme = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(SDL_MessageBoxColorScheme)));
+				Marshal.StructureToPtr(messageboxdata.colorScheme.Value, data.colorScheme, false);
+			}
+
+			int result;
+			fixed (INTERNAL_SDL_MessageBoxButtonData* buttonsPtr = &buttons[0])
+			{
+				data.buttons = (IntPtr)buttonsPtr;
+				result = INTERNAL_SDL_ShowMessageBox(ref data, out buttonid);
+			}
+
+			Marshal.FreeHGlobal(data.colorScheme);
+			for (int i = 0; i < messageboxdata.numbuttons; i++)
+			{
+				utf8.CleanUpNativeData(buttons[i].text);
+			}
+			utf8.CleanUpNativeData(data.message);
+			utf8.CleanUpNativeData(data.title);
+
+			return result;
+		}
+
 		/* window refers to an SDL_Window* */
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern int SDL_ShowSimpleMessageBox(
-			UInt32 flags,
+			SDL_MessageBoxFlags flags,
 			[In()] [MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(LPUtf8StrMarshaler))]
 				string title,
 			[In()] [MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(LPUtf8StrMarshaler))]
 				string message,
 			IntPtr window
 		);
-		
+
 		#endregion
-		
+
 		#region SDL_version.h, SDL_revision.h
 		
 		/* Similar to the headers, this is the version we're expecting to be
@@ -908,7 +1030,8 @@ namespace SDL2
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern int SDL_UpdateWindowSurfaceRects(
 			IntPtr window,
-			SDL_Rect[] rects,
+			[In()] [MarshalAs(UnmanagedType.LPArray, ArraySubType = UnmanagedType.Struct, SizeParamIndex = 2)]
+				SDL_Rect[] rects,
 			int numrects
 		);
 		
@@ -1015,23 +1138,23 @@ namespace SDL2
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern int SDL_GetRenderDrawBlendMode(
 			IntPtr renderer,
-			ref SDL_BlendMode blendMode
+			out SDL_BlendMode blendMode
 		);
 		
 		/* renderer refers to an SDL_Renderer* */
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern int SDL_GetRenderDrawColor(
 			IntPtr renderer,
-			ref byte r,
+			out byte r,
-			ref byte g,
+			out byte g,
-			ref byte b,
+			out byte b,
-			ref byte a
+			out byte a
 		);
 		
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern int SDL_GetRenderDriverInfo(
 			int index,
-			ref SDL_RendererInfo info
+			out SDL_RendererInfo info
 		);
 		
 		/* IntPtr refers to an SDL_Renderer*, window to an SDL_Window* */
@@ -1042,30 +1165,30 @@ namespace SDL2
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern int SDL_GetRendererInfo(
 			IntPtr renderer,
-			ref SDL_RendererInfo info
+			out SDL_RendererInfo info
 		);
 		
 		/* texture refers to an SDL_Texture* */
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern int SDL_GetTextureAlphaMod(
 			IntPtr texture,
-			ref byte alpha
+			out byte alpha
 		);
 		
 		/* texture refers to an SDL_Texture* */
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern int SDL_GetTextureBlendMode(
 			IntPtr texture,
-			ref SDL_BlendMode blendMode
+			out SDL_BlendMode blendMode
 		);
 		
 		/* texture refers to an SDL_Texture* */
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern int SDL_GetTextureColorMod(
 			IntPtr texture,
-			ref byte r,
+			out byte r,
-			ref byte g,
+			out byte g,
-			ref byte b
+			out byte b
 		);
 		
 		/* texture refers to an SDL_Texture*, pixels to a void* */
@@ -1073,26 +1196,26 @@ namespace SDL2
 		public static extern int SDL_LockTexture(
 			IntPtr texture,
 			ref SDL_Rect rect,
-			ref IntPtr pixels,
+			out IntPtr pixels,
-			ref int pitch
+			out int pitch
 		);
 		
 		/* texture refers to an SDL_Texture* */
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern int SDL_QueryTexture(
 			IntPtr texture,
-			ref uint format,
+			out uint format,
-			ref int access,
+			out int access,
-			ref int w,
+			out int w,
-			ref int h
+			out int h
 		);
 		
 		/* texture refers to an SDL_Texture, pixels to a void* */
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern int SDL_QueryTexturePixels(
 			IntPtr texture,
-			ref IntPtr pixels,
+			out IntPtr pixels,
-			ref int pitch
+			out int pitch
 		);
 		
 		/* renderer refers to an SDL_Renderer* */
@@ -1134,7 +1257,8 @@ namespace SDL2
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern int SDL_RenderDrawLines(
 			IntPtr renderer,
-			SDL_Point[] points,
+			[In()] [MarshalAs(UnmanagedType.LPArray, ArraySubType = UnmanagedType.Struct, SizeParamIndex = 2)]
+				SDL_Point[] points,
 			int count
 		);
 		
@@ -1150,7 +1274,8 @@ namespace SDL2
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern int SDL_RenderDrawPoints(
 			IntPtr renderer,
-			SDL_Point[] points,
+			[In()] [MarshalAs(UnmanagedType.LPArray, ArraySubType = UnmanagedType.Struct, SizeParamIndex = 2)]
+				SDL_Point[] points,
 			int count
 		);
 		
@@ -1165,7 +1290,8 @@ namespace SDL2
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern int SDL_RenderDrawRects(
 			IntPtr renderer,
-			SDL_Rect[] rects,
+			[In()] [MarshalAs(UnmanagedType.LPArray, ArraySubType = UnmanagedType.Struct, SizeParamIndex = 2)]
+				SDL_Rect[] rects,
 			int count
 		);
 		
@@ -1180,7 +1306,8 @@ namespace SDL2
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern int SDL_RenderFillRects(
 			IntPtr renderer,
-			SDL_Rect[] rects,
+			[In()] [MarshalAs(UnmanagedType.LPArray, ArraySubType = UnmanagedType.Struct, SizeParamIndex = 2)]
+				SDL_Rect[] rects,
 			int count
 		);
 		
@@ -1188,7 +1315,7 @@ namespace SDL2
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern int SDL_RendererGetViewport(
 			IntPtr renderer,
-			ref SDL_Rect rect
+			out SDL_Rect rect
 		);
 		
 		/* renderer refers to an SDL_Renderer* */
@@ -1669,7 +1796,7 @@ namespace SDL2
 		public struct SDL_Palette
 		{
 			public int ncolors;
-			public SDL_Color[] colors;
+			public IntPtr colors;
 			public int version;
 			public int refcount;
 		}
@@ -1708,7 +1835,8 @@ namespace SDL2
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern void SDL_CalculateGammaRamp(
 			float gamma,
-			ref ushort ramp
+			[Out()] [MarshalAs(UnmanagedType.LPArray, ArraySubType = UnmanagedType.U2, SizeConst = 256)]
+				ushort[] ramp
 		);
 		
 		/* format refers to an SDL_PixelFormat* */
@@ -1730,9 +1858,9 @@ namespace SDL2
 		public static extern void SDL_GetRGB(
 			uint pixel,
 			IntPtr format,
-			ref byte r,
+			out byte r,
-			ref byte g,
+			out byte g,
-			ref byte b
+			out byte b
 		);
 		
 		/* format refers to an SDL_PixelFormat* */
@@ -1740,10 +1868,10 @@ namespace SDL2
 		public static extern void SDL_GetRGBA(
 			uint pixel,
 			IntPtr format,
-			ref byte r,
+			out byte r,
-			ref byte g,
+			out byte g,
-			ref byte b,
+			out byte b,
-			ref byte a
+			out byte a
 		);
 		
 		/* format refers to an SDL_PixelFormat* */
@@ -1777,18 +1905,19 @@ namespace SDL2
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern SDL_bool SDL_PixelFormatEnumToMasks(
 			uint format,
-			ref int bpp,
+			out int bpp,
-			ref uint Rmask,
+			out uint Rmask,
-			ref uint Gmask,
+			out uint Gmask,
-			ref uint Bmask,
+			out uint Bmask,
-			ref uint Amask
+			out uint Amask
 		);
 		
 		/* palette refers to an SDL_Palette* */
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern int SDL_SetPaletteColors(
 			IntPtr palette,
-			SDL_Color[] colors,
+			[In()] [MarshalAs(UnmanagedType.LPArray, ArraySubType = UnmanagedType.Struct)]
+				SDL_Color[] colors,
 			int firstcolor,
 			int ncolors
 		);
@@ -1822,10 +1951,11 @@ namespace SDL2
 		
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern SDL_bool SDL_EnclosePoints(
-			SDL_Point[] points,
+			[In()] [MarshalAs(UnmanagedType.LPArray, ArraySubType = UnmanagedType.Struct, SizeParamIndex = 1)]
+				SDL_Point[] points,
 			int count,
 			ref SDL_Rect clip,
-			ref SDL_Rect result
+			out SDL_Rect result
 		);
 		
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
@@ -1838,7 +1968,7 @@ namespace SDL2
 		public static extern SDL_bool SDL_IntersectRect(
 			ref SDL_Rect A,
 			ref SDL_Rect B,
-			ref SDL_Rect result
+			out SDL_Rect result
 		);
 		
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
@@ -1863,7 +1993,7 @@ namespace SDL2
 		public static extern void SDL_UnionRect(
 			ref SDL_Rect A,
 			ref SDL_Rect B,
-			ref SDL_Rect result
+			out SDL_Rect result
 		);
 		
 		#endregion
@@ -1983,7 +2113,8 @@ namespace SDL2
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern int SDL_FillRects(
 			IntPtr dst,
-			SDL_Rect[] rects,
+			[In()] [MarshalAs(UnmanagedType.LPArray, ArraySubType = UnmanagedType.Struct, SizeParamIndex = 2)]
+				SDL_Rect[] rects,
 			int count,
 			uint color
 		);
@@ -1996,37 +2127,37 @@ namespace SDL2
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern void SDL_GetClipRect(
 			IntPtr surface,
-			ref SDL_Rect rect
+			out SDL_Rect rect
 		);
 		
 		/* surface refers to an SDL_Surface* */
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern int SDL_GetColorKey(
 			IntPtr surface,
-			ref uint key
+			out uint key
 		);
 		
 		/* surface refers to an SDL_Surface* */
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern int SDL_GetSurfaceAlphaMod(
 			IntPtr surface,
-			ref byte alpha
+			out byte alpha
 		);
 		
 		/* surface refers to an SDL_Surface* */
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern int SDL_GetSurfaceBlendMode(
 			IntPtr surface,
-			ref SDL_BlendMode blendMode
+			out SDL_BlendMode blendMode
 		);
 		
 		/* surface refers to an SDL_Surface* */
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern int SDL_GetSurfaceColorMod(
 			IntPtr surface,
-			ref byte r,
+			out byte r,
-			ref byte g,
+			out byte g,
-			ref byte b
+			out byte b
 		);
 
 		/* These are for SDL_LoadBMP, which is a macro in the SDL headers. */
@@ -2618,7 +2749,8 @@ namespace SDL2
 
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern int SDL_PeepEvents(
-			SDL_Event[] events,
+			[Out()] [MarshalAs(UnmanagedType.LPArray, ArraySubType = UnmanagedType.Struct, SizeParamIndex = 1)]
+				SDL_Event[] events,
 			int numevents,
 			SDL_eventaction action,
 			SDL_EventType minType,
@@ -2672,8 +2804,8 @@ namespace SDL2
 		/* userdata refers to a void* */
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern SDL_bool SDL_GetEventFilter(
-			ref SDL_EventFilter filter,
+			out SDL_EventFilter filter,
-			ref IntPtr userdata
+			out IntPtr userdata
 		);
 
 		/* userdata refers to a void* */
@@ -3320,7 +3452,7 @@ namespace SDL2
 		/* Return value is a pointer to a UInt8 array */
 		/* Numkeys returns the size of the array if non-null */
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
-		public static extern IntPtr SDL_GetKeyboardState(ref int numkeys);
+		public static extern IntPtr SDL_GetKeyboardState(out int numkeys);
 
 		/* Get the current key modifier state for the keyboard. */
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
@@ -3542,8 +3674,8 @@ namespace SDL2
 		public static extern int SDL_JoystickGetBall(
 			IntPtr joystick,
 			int ball,
-			ref int dx,
+			out int dx,
-			ref int dy
+			out int dy
 		);
 		
 		/* joystick refers to an SDL_Joystick* */
@@ -4312,14 +4444,14 @@ namespace SDL2
 			IntPtr src,
 			int freesrc,
 			ref SDL_AudioSpec spec,
-			ref IntPtr audio_buf,
+			out IntPtr audio_buf,
-			ref uint audio_len
+			out uint audio_len
 		);
 		public static SDL_AudioSpec SDL_LoadWAV(
 			string file,
 			ref SDL_AudioSpec spec,
-			ref IntPtr audio_buf,
+			out IntPtr audio_buf,
-			ref uint audio_len
+			out uint audio_len
 		) {
 			SDL_AudioSpec result;
 			IntPtr rwops = INTERNAL_SDL_RWFromFile(file, "rb");
@@ -4327,8 +4459,8 @@ namespace SDL2
 				rwops,
 				1,
 				ref spec,
-				ref audio_buf,
+				out audio_buf,
-				ref audio_len
+				out audio_len
 			);
 			result = (SDL_AudioSpec) Marshal.PtrToStructure(
 				result_ptr,
@@ -4346,8 +4478,10 @@ namespace SDL2
 		
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern void SDL_MixAudio(
-			byte[] dst,
+			[Out()] [MarshalAs(UnmanagedType.LPArray, ArraySubType = UnmanagedType.U1, SizeParamIndex = 2)]
-			byte[] src,
+				byte[] dst,
+			[In()] [MarshalAs(UnmanagedType.LPArray, ArraySubType = UnmanagedType.U1, SizeParamIndex = 2)]
+				byte[] src,
 			uint len,
 			int volume
 		);
@@ -4355,8 +4489,10 @@ namespace SDL2
 		/* format refers to an SDL_AudioFormat */
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern void SDL_MixAudioFormat(
-			byte[] dst,
+			[Out()] [MarshalAs(UnmanagedType.LPArray, ArraySubType = UnmanagedType.U1, SizeParamIndex = 3)]
-			byte[] src,
+				byte[] dst,
+			[In()] [MarshalAs(UnmanagedType.LPArray, ArraySubType = UnmanagedType.U1, SizeParamIndex = 3)]
+				byte[] src,
 			ushort format,
 			uint len,
 			int volume
@@ -4365,7 +4501,7 @@ namespace SDL2
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern int SDL_OpenAudio(
 			ref SDL_AudioSpec desired,
-			ref SDL_AudioSpec obtained
+			out SDL_AudioSpec obtained
 		);
 		
 		/* uint refers to an SDL_AudioDeviceID */
@@ -4375,7 +4511,7 @@ namespace SDL2
 				string device,
 			int iscapture,
 			ref SDL_AudioSpec desired,
-			ref SDL_AudioSpec obtained,
+			out SDL_AudioSpec obtained,
 			int allowed_changes
 		);
 		

src/SDL2_image.cs

@@ -61,7 +61,7 @@ namespace SDL2
 			IMG_INIT_WEBP =	0x00000008
 		}
 		
-		public static void SDL_IMAGE_VERSION(ref SDL.SDL_version X)
+		public static void SDL_IMAGE_VERSION(out SDL.SDL_version X)
 		{
 			X.major = SDL_IMAGE_MAJOR_VERSION;
 			X.minor = SDL_IMAGE_MINOR_VERSION;
@@ -107,7 +107,10 @@ namespace SDL2
 		
 		/* IntPtr refers to an SDL_Surface* */
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
-		public static extern IntPtr IMG_ReadXPMFromArray(ref char[] xpm);
+		public static extern IntPtr IMG_ReadXPMFromArray(
+			[In()] [MarshalAs(UnmanagedType.LPArray, ArraySubType = UnmanagedType.LPStr)]
+				string[] xpm
+		);
 		
 		#endregion
 	}

src/SDL2_mixer.cs

@@ -137,7 +137,7 @@ namespace SDL2
 			IntPtr b // void*
 		);
 		
-		public static void SDL_MIXER_VERSION(ref SDL.SDL_version X)
+		public static void SDL_MIXER_VERSION(out SDL.SDL_version X)
 		{
 			X.major = SDL_MIXER_MAJOR_VERSION;
 			X.minor = SDL_MIXER_MINOR_VERSION;
@@ -205,11 +205,18 @@ namespace SDL2
 		
 		/* IntPtr refers to a Mix_Chunk* */
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
-		public static extern IntPtr Mix_QuickLoad_WAV(byte[] mem);
+		public static extern IntPtr Mix_QuickLoad_WAV(
+			[In()] [MarshalAs(UnmanagedType.LPArray, ArraySubType = UnmanagedType.U1)]
+				byte[] mem
+		);
 		
 		/* IntPtr refers to a Mix_Chunk* */
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
-		public static extern Mix_Chunk Mix_QuickLoad_RAW(byte[] mem, uint len);
+		public static extern Mix_Chunk Mix_QuickLoad_RAW(
+			[In()] [MarshalAs(UnmanagedType.LPArray, ArraySubType = UnmanagedType.U1, SizeParamIndex = 1)]
+				byte[] mem,
+			uint len
+		);
 		
 		/* chunk refers to a Mix_Chunk* */
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]

src/SDL2_ttf.cs

@@ -66,7 +66,7 @@ namespace SDL2
 		public const int TTF_HINTING_MONO =	2;
 		public const int TTF_HINTING_NONE =	3;
 		
-		public static void SDL_TTF_VERSION(ref SDL.SDL_version X)
+		public static void SDL_TTF_VERSION(out SDL.SDL_version X)
 		{
 			X.major = SDL_TTF_MAJOR_VERSION;
 			X.minor = SDL_TTF_MINOR_VERSION;
@@ -188,11 +188,11 @@ namespace SDL2
 		public static extern int TTF_GlyphMetrics(
 			IntPtr font,
 			ushort ch,
-			ref int minx,
+			out int minx,
-			ref int maxx,
+			out int maxx,
-			ref int miny,
+			out int miny,
-			ref int maxy,
+			out int maxy,
-			ref int advance
+			out int advance
 		);
 		
 		/* font refers to a TTF_Font* */
@@ -201,8 +201,8 @@ namespace SDL2
 			IntPtr font,
 			[In()] [MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(LPUtf8StrMarshaler))]
 				string text,
-			ref int w,
+			out int w,
-			ref int h
+			out int h
 		);
 		
 		/* font refers to a TTF_Font* */
@@ -211,24 +211,25 @@ namespace SDL2
 			IntPtr font,
 			[In()] [MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(LPUtf8StrMarshaler))]
 				string text,
-			ref int w,
+			out int w,
-			ref int h
+			out int h
 		);
 		
 		/* font refers to a TTF_Font* */
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern int TTF_SizeUNICODE(
 			IntPtr font,
-			ushort[] text,
+			[In()] [MarshalAs(UnmanagedType.LPWStr)]
-			ref int w,
+				string text,
-			ref int h
+			out int w,
+			out int h
 		);
 		
 		/* IntPtr refers to an SDL_Surface*, font to a TTF_Font* */
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern IntPtr TTF_RenderText_Solid(
 			IntPtr font,
-			[In()] [MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(LPUtf8StrMarshaler))]
+			[In()] [MarshalAs(UnmanagedType.LPStr)]
 				string text,
 			SDL.SDL_Color fg
 		);
@@ -246,7 +247,8 @@ namespace SDL2
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern IntPtr TTF_RenderUNICODE_Solid(
 			IntPtr font,
-			ushort[] text,
+			[In()] [MarshalAs(UnmanagedType.LPWStr)]
+				string text,
 			SDL.SDL_Color fg
 		);
 		
@@ -262,7 +264,7 @@ namespace SDL2
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern IntPtr TTF_RenderText_Shaded(
 			IntPtr font,
-			[In()] [MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(LPUtf8StrMarshaler))]
+			[In()] [MarshalAs(UnmanagedType.LPStr)]
 				string text,
 			SDL.SDL_Color fg,
 			SDL.SDL_Color bg
@@ -282,7 +284,8 @@ namespace SDL2
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern IntPtr TTF_RenderUNICODE_Shaded(
 			IntPtr font,
-			ushort[] text,
+			[In()] [MarshalAs(UnmanagedType.LPWStr)]
+				string text,
 			SDL.SDL_Color fg,
 			SDL.SDL_Color bg
 		);
@@ -300,7 +303,7 @@ namespace SDL2
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern IntPtr TTF_RenderText_Blended(
 			IntPtr font,
-			[In()] [MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(LPUtf8StrMarshaler))]
+			[In()] [MarshalAs(UnmanagedType.LPStr)]
 				string text,
 			SDL.SDL_Color fg
 		);
@@ -318,7 +321,8 @@ namespace SDL2
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern IntPtr TTF_RenderUNICODE_Blended(
 			IntPtr font,
-			ushort[] text,
+			[In()] [MarshalAs(UnmanagedType.LPWStr)]
+				string text,
 			SDL.SDL_Color fg
 		);
 		
@@ -326,7 +330,7 @@ namespace SDL2
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern IntPtr TTF_RenderText_Blended_Wrapped(
 			IntPtr font,
-			[In()] [MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(LPUtf8StrMarshaler))]
+			[In()] [MarshalAs(UnmanagedType.LPStr)]
 				string text,
 			SDL.SDL_Color fg,
 			uint wrapped
@@ -346,7 +350,8 @@ namespace SDL2
 		[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
 		public static extern IntPtr TTF_RenderUNICODE_Blended_Wrapped(
 			IntPtr font,
-			ushort[] text,
+			[In()] [MarshalAs(UnmanagedType.LPWStr)]
+				string text,
 			SDL.SDL_Color fg,
 			uint wrapped
 		);