網址將更動

由於savage.tw 這個網域要拿做測試別的用途(測試獨立研發程式)，所以以後進入這個部落格網址改回 http://savagevb.blogspot.com/

更改遠端桌面 PORT

遠端桌面port在tcp中的預設是3389
因為大家的電腦內建都是如此，所以容易被入侵（如果你的電腦有入侵價值的話）
所以來介紹一下改遠端port的方法：
1.開始>執行>regedit>enter
2.找到HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Terminal Server\Wds\Repwd\Tds\Tcp 中的PortNumber＞右鍵>修改>點選十進位，然後改成自己想要的數字，四位數比較好
3.再找到HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp 中的PortNumber＞右鍵>修改>點選十進位，然後改成剛剛設定的四位數
4.控制台>防火牆>例外>新增連接阜>新增剛剛設定的port>確定
5.最後，記得當你要遠端連線的時候，要在自己的ip後面加上":xxxx" 就像之前寫jsp時要加上":8080:一樣。　例如你的ip是140.123.45.78，port設1234 那遠端時就要輸入:140.123.45.78:123 這樣~相信聰明的大家都會了吧~

讓window mobile 播放MP3 用 vb.net

Imports System.Runtime.InteropServices

Public Class Form1

_
Private Shared Function SndPlaySync(ByVal Path As String, ByVal Flags As UInteger) As IntPtr
End Function

Private Sub Button1_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles Button1.Click
Dim ii As Integer

ii = SndPlaySync("\Storage Card\音樂\2008-12-12 梁文音 - 愛的詩篇\01. 最幸褔的事.mp3", 0)
End Sub



End Class

vb.net 、C# 網頁上applet

所以這叫做vb.net applet? OR C# applet?

有圖有真相

此開發環境為 windows XP 、VS 2008

VB版：

1. 建立 Windows Form 使用者控制項：

2.編譯的標籤，勾選..
『註冊OCM....』

3.在程式裡面，需要在一開使的地方做一些調整

是的，需要Import System...................

跟加上Guid、ComVisible

還有主要的 Class要繼承 UserControl

4.在AssemblyInfo.vb裡面

要加上





跟

5.把您的超級程式碼擺進去吧。。。

..................................................

6.高興的按下三角形編譯吧

7.這個時候HTML需要製作了

OK，大功告成...

C#版的話，自行想像。。。基本上很相近

溫室裡的工程師

在矽X寫第一隻程式的時候，突然想起如果是有幾百萬筆資料，他們會怎麼想，如果使用者亂拉資料，DB Server不怕Crash掉嗎？根據溝通的結果。。。。他們說。。。銀行也只會調今年的資料，我反問說，萬一，櫃台小姐想調出5年前的交易紀錄，怎麼辦

PS.資料很有可能很大(如果每次都SELECT *....沒幾個人玩，DB Server記憶體要擴充到幾百G都有可能...)

他們：........

我：!!(。。。)

好吧，我自己想，在艾瑞克也是這樣解的。。。很多無解的問題也是這樣解的

3D座標轉2D座標

3D轉2D？聽起來很簡單。可是發現裡面牽涉一堆陣列的時候頭就痛
這是研究結果
Vector3 screenSpace = graphics.GraphicsDevice.Viewport.Project(
Vector3.Zero, cameraProjectionMaxtrix, cameraViewMaxtrix, new Matrix(0.1f, 0.0f, 0.0f, 0.0f, 0.0f, 0.1f, 0.0f, 0.0f, 0.0f, 0.0f, 0.1f, 0.0f
, ship.position.X, ship.position.Y, ship.position.Z, 1.0f));

座標就在這裡出現
screenSpace.X ←怪物的X座標
screenSpace.Y ←怪物的Y座標

利用此座標，在怪物或是機械死亡的瞬間，繪出爆炸效果，就是爆破了

XNA畫線

介紹一下XNA劃線功能，vb劃線很簡單 System.DrawLine(參數自己查...)
，可是XNA卻搞一堆鬼東西，明明號稱『123，站著寫真簡單』，真是不簡單
不廢話，以下為source code 自己抄
namespace DrawLine1
{
///

/// This is the main type for your game
///

public class Game1 : Microsoft.Xna.Framework.Game
{
GraphicsDeviceManager graphics;
SpriteBatch spriteBatch;


VertexPositionNormalTexture[] line; // Our start and end points.
Matrix world, projection, view; // Transformation Matrices
BasicEffect basicEffect; // Standard Effect to draw with
VertexDeclaration vertexDeclaration; // Our format for the line.
public Game1()
{
graphics = new GraphicsDeviceManager(this);
Content.RootDirectory = "Content";
}

///

/// 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.
///

protected override void Initialize()
{
// TODO: Add your initialization logic here
InitializeTransforms();
InitializeBasicEffect();
base.Initialize();
}
private void InitializeTransforms()
{
world = Matrix.CreateTranslation(new Vector3(-1.5f, -0.5f, 0.0f));
view = Matrix.CreateLookAt(
new Vector3(0.0f, 0.0f, 7.0f),
new Vector3(0.0f, 0.0f, 0.0f),
Vector3.Up
);
projection = Matrix.CreatePerspectiveFieldOfView(
MathHelper.ToRadians(45),
(float)graphics.GraphicsDevice.Viewport.Width /
(float)graphics.GraphicsDevice.Viewport.Height,
1.0f, 100.0f);
}
///

/// Setup up the required effect so we can see our scene
///

private void InitializeBasicEffect()
{
// Not part of the Effect per se, but is required for drawing
vertexDeclaration = new VertexDeclaration(
graphics.GraphicsDevice,
VertexPositionNormalTexture.VertexElements
);
basicEffect = new BasicEffect(graphics.GraphicsDevice, null);
basicEffect.DiffuseColor = new Vector3(1.0f, 1.0f, 1.0f);
basicEffect.World = world;
basicEffect.View = view;
basicEffect.Projection = projection;
}
///

/// LoadContent will be called once per game and is the place to load
/// all of your content.
///

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
}

///

/// UnloadContent will be called once per game and is the place to unload
/// all content.
///

protected override void UnloadContent()
{
// TODO: Unload any non ContentManager content here
}

///

/// Allows the game to run logic such as updating the world,
/// checking for collisions, gathering input, and playing audio.
///

/// Provides a snapshot of timing values.
protected override void Update(GameTime gameTime)
{
// Allows the game to exit
if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
this.Exit();

// TODO: Add your update logic here

base.Update(gameTime);
}
private void DrawLine()
{
line = new VertexPositionNormalTexture[2];
line[0] = new VertexPositionNormalTexture(new Vector3(0, 0, 0),
Vector3.Forward,
Vector2.One
);
line[1] = new VertexPositionNormalTexture(new Vector3(0, 1, 0),
Vector3.Forward,
Vector2.One
);
graphics.GraphicsDevice.DrawUserIndexedPrimitives(
PrimitiveType.LineList,
line,
0, // vertex buffer offset to add to each element of the index buffer
2, // number of vertices in pointList
new short[2] { 0, 1 }, // the index buffer
0, // first index element to read
1 // number of primitives to draw
);
}
///

/// This is called when the game should draw itself.
///

/// Provides a snapshot of timing values.
protected override void Draw(GameTime gameTime)
{
GraphicsDevice.Clear(Color.CornflowerBlue);
graphics.GraphicsDevice.VertexDeclaration = vertexDeclaration;
// The effect is a compiled effect created and compiled elsewhere
// in the application.
basicEffect.Begin();
foreach (EffectPass pass in basicEffect.CurrentTechnique.Passes)
{
pass.Begin();
DrawLine();
pass.End();
}
basicEffect.End();
// TODO: Add your drawing code here

base.Draw(gameTime);
}
}
}