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手机设备里面,会有横竖屏的状态,一般会有3种情况,一个中是竖屏,一个是右横屏,一个是左横屏,横屏的设置是通过GraphicsDeviceManager类的SupportedOrientations属性来设置的,GraphicsDeviceManager类在XNA类库介绍中提到的该类型是非常重要的。它为开发者提供方法来管理目标设备的显卡资源。简单地说就是调用显卡的一个接口,该对象的GraphicsDevice属性代表当前目标设备的显卡。
示例:
- using System;
- using System.Collections.Generic;
- using System.Linq;
- using Microsoft.Xna.Framework;
- using Microsoft.Xna.Framework.Audio;
- using Microsoft.Xna.Framework.Content;
- using Microsoft.Xna.Framework.GamerServices;
- using Microsoft.Xna.Framework.Graphics;
- using Microsoft.Xna.Framework.Input;
- using Microsoft.Xna.Framework.Input.Touch;
- using Microsoft.Xna.Framework.Media;
-
- namespace RotationSample
- {
- /// <summary>
- /// This is the main type for your game
- /// </summary>
- public class Game1 : Microsoft.Xna.Framework.Game
- {
- GraphicsDeviceManager graphics;
- SpriteBatch spriteBatch;
- SpriteFont rotationFont;
-
- public Game1()
- {
- graphics = new GraphicsDeviceManager(this);
- Content.RootDirectory = "Content";
-
- // Frame rate is 30 fps by default for Windows Phone.
- TargetElapsedTime = TimeSpan.FromTicks(333333);
- //添加横屏和竖屏的支持
- graphics.SupportedOrientations = DisplayOrientation.Portrait | DisplayOrientation.LandscapeLeft | DisplayOrientation.LandscapeRight;
- }
-
- /// <summary>
- /// Allows the game to perform any initialization it needs to before starting to run.
- /// This is where it can query for any required services and load any non-graphic
- /// related content. Calling base.Initialize will enumerate through any components
- /// and initialize them as well.
- /// </summary>
- protected override void Initialize()
- {
- // TODO: Add your initialization logic here
-
- base.Initialize();
- }
-
- /// <summary>
- /// LoadContent will be called once per game and is the place to load
- /// all of your content.
- /// </summary>
- protected override void LoadContent()
- {
- // Create a new SpriteBatch, which can be used to draw textures.
- spriteBatch = new SpriteBatch(GraphicsDevice);
-
- // TODO: use this.Content to load your game content here
- rotationFont = Content.Load<SpriteFont>("rotationFont");
- }
-
- /// <summary>
- /// UnloadContent will be called once per game and is the place to unload
- /// all content.
- /// </summary>
- protected override void UnloadContent()
- {
- // TODO: Unload any non ContentManager content here
- }
-
- /// <summary>
- /// Allows the game to run logic such as updating the world,
- /// checking for collisions, gathering input, and playing audio.
- /// </summary>
- /// <param name="gameTime">Provides a snapshot of timing values.</param>
- protected override void Update(GameTime gameTime)
- {
- // Allows the game to exit
- if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
- this.Exit();
-
- base.Update(gameTime);
- }
-
- /// <summary>
- /// This is called when the game should draw itself.
- /// </summary>
- /// <param name="gameTime">Provides a snapshot of timing values.</param>
- protected override void Draw(GameTime gameTime)
- {
- GraphicsDevice.Clear(Color.CornflowerBlue);
-
- // TODO: Add your drawing code here
- spriteBatch.Begin();
- spriteBatch.DrawString(rotationFont, "你现在手机的摆放状态是:" + Window.CurrentOrientation.ToString() + ".", new Vector2(50, 50), Color.White);
- spriteBatch.End();
-
- base.Draw(gameTime);
- }
- }
- }
本文转自linzheng 51CTO博客,原文链接:http://blog.51cto.com/linzheng/1078391
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