Add C# type-friendly properties/getters to some structs

SDL3-CS/SDL3/SDL_events.cs

@@ -0,0 +1,37 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+namespace SDL
+{
+    public unsafe partial struct SDL_TextInputEvent
+    {
+        public string? GetText() => SDL3.PtrToStringUTF8(text);
+    }
+
+    public unsafe partial struct SDL_TextEditingEvent
+    {
+        public string? GetText() => SDL3.PtrToStringUTF8(text);
+    }
+
+    public unsafe partial struct SDL_DropEvent
+    {
+        public string? GetSource() => SDL3.PtrToStringUTF8(source);
+
+        public string? GetData() => SDL3.PtrToStringUTF8(data);
+    }
+
+    public partial struct SDL_MouseButtonEvent
+    {
+        public SDLButton Button => (SDLButton)button;
+    }
+
+    public partial struct SDL_GamepadAxisEvent
+    {
+        public SDL_GamepadAxis Axis => (SDL_GamepadAxis)axis;
+    }
+
+    public partial struct SDL_GamepadButtonEvent
+    {
+        public SDL_GamepadButton Button => (SDL_GamepadButton)button;
+    }
+}

SDL3-CS/SDL3/SDL_keyboard.cs

@@ -7,4 +7,9 @@ namespace SDL
 {
     [Typedef]
     public enum SDL_KeyboardID : UInt32;
+
+    public partial struct SDL_Keysym
+    {
+        public SDL_Keymod Mod => (SDL_Keymod)mod;
+    }
 }