update code for some recent SDL3 renames

src/modules/joystick/sdl/JoystickSDL3.cpp

@@ -334,14 +334,13 @@ Joystick::JoystickInput Joystick::getGamepadMapping(const GamepadInput &input) c
 
 	int bindcount = 0;
 	SDL_GamepadBinding **sdlbindings = SDL_GetGamepadBindings(controller, &bindcount);
-	const SDL_GamepadBinding *sdlbinding = nullptr;
 	for (int i = 0; i < bindcount; i++)
 	{
 		const SDL_GamepadBinding *b = sdlbindings[i];
-		if ((input.type == INPUT_TYPE_BUTTON && b->outputType == SDL_GAMEPAD_BINDTYPE_BUTTON && b->output.button == sdlbutton)
-			|| (input.type == INPUT_TYPE_AXIS && b->outputType == SDL_GAMEPAD_BINDTYPE_AXIS && b->output.axis.axis == sdlaxis))
+		if ((input.type == INPUT_TYPE_BUTTON && b->output_type == SDL_GAMEPAD_BINDTYPE_BUTTON && b->output.button == sdlbutton)
+			|| (input.type == INPUT_TYPE_AXIS && b->output_type == SDL_GAMEPAD_BINDTYPE_AXIS && b->output.axis.axis == sdlaxis))
 		{
-			switch (b->inputType)
+			switch (b->input_type)
 			{
 			case SDL_GAMEPAD_BINDTYPE_BUTTON:
 				jinput.type = INPUT_TYPE_BUTTON;

src/modules/window/sdl/Window.cpp

@@ -1512,13 +1512,21 @@ void Window::setMouseGrab(bool grab)
 {
 	mouseGrabbed = grab;
 	if (window)
+#if SDL_VERSION_ATLEAST(3, 0, 0)
+		SDL_SetWindowMouseGrab(window, (SDL_bool) grab);
+#else
 		SDL_SetWindowGrab(window, (SDL_bool) grab);
+#endif
 }
 
 bool Window::isMouseGrabbed() const
 {
 	if (window)
+#if SDL_VERSION_ATLEAST(3, 0, 0)
+		return SDL_GetWindowMouseGrab(window);
+#else
 		return SDL_GetWindowGrab(window) != SDL_FALSE;
+#endif
 	else
 		return mouseGrabbed;
 }
@@ -1684,7 +1692,11 @@ int Window::showMessageBox(const MessageBoxData &data)
 	{
 		SDL_MessageBoxButtonData sdlbutton = {};
 
+#if SDL_VERSION_ATLEAST(3, 0, 0)
+		sdlbutton.buttonID = i;
+#else
 		sdlbutton.buttonid = i;
+#endif
 		sdlbutton.text = data.buttons[i].c_str();
 
 		if (i == data.enterButtonIndex)