[C#] Windows 多媒體Library 資料

專案須建立一測試程式，並須使用喇叭（WaveOut）、麥克風(WaveIn)作為聲音傳遞使用。

目前使用為函式庫為”winmm.dll” ，window multimedia library 。紀錄一下主要使用函數列表與網站資料。

Multimedia Reference

---

Waveform Audio Reference

This section lists the functions, structures, and messages associated with waveform audio, which are documented under Multimedia Reference. These elements are grouped as follows.

Auxiliary Devices

• AUXCAPS
• auxGetDevCaps
• auxGetNumDevs
• auxGetVolume
• auxOutMessage
• auxSetVolume

Easy Playback

• PlaySound
• sndPlaySound

Errors

• waveInGetErrorText
• waveOutGetErrorText

Opening and Closing

• PCMWAVEFORMAT
• MM_WIM_CLOSE
• MM_WIM_OPEN
• MM_WOM_CLOSE
• MM_WOM_OPEN
• WAVEFORMAT
• WAVEFORMATEX
• waveInClose
• waveInProc
• waveInOpen
• waveOutClose
• waveOutProc
• waveOutOpen
• WIM_CLOSE
• WIM_OPEN
• WOM_CLOSE
• WOM_OPEN

Pitch

• waveOutGetPitch
• waveOutSetPitch

Playback Rate

• waveOutGetPlaybackRate
• waveOutSetPlaybackRate

Playback Progress

• MM_WOM_DONE
• waveOutBreakLoop
• waveOutPause
• waveOutReset
• waveOutRestart
• WOM_DONE

Playing

• MM_WOM_DONE
• WAVEHDR
• waveOutPrepareHeader
• waveOutUnprepareHeader
• waveOutWrite
• WOM_DONE

Querying a Device

• WAVEINCAPS
• waveInGetDevCaps
• waveInGetNumDevs
• WAVEOUTCAPS
• waveOutGetDevCaps
• waveOutGetNumDevs

Recording

• MM_WIM_DATA
• waveInAddBuffer
• waveInPrepareHeader
• waveInReset
• waveInStart
• waveInStop
• waveInUnprepareHeader
• WIM_DATA

Retrieving Device Identifiers

• waveInGetID
• waveOutGetID

Retrieving the Current Position

• waveInGetPosition
• waveOutGetPosition

Sending Custom Messages

• waveInMessage
• waveOutMessage

Volume

• waveOutGetVolume
• waveOutSetVolume

---

Audio Streaming Sample Code

---

Test blog on OLW

Test post to Olw

[C#] Thread 傳遞參數

Thread 可以讓一動作於背景持續執行，而不會造成UI 發生凍結(freeze)現象，在多工環境下常常使用的技能。
一般常用的Thread class來自於 System.Threading。通常Thread會搭配一個需要執行的Function。

   1: public void Hello()

   2: {

   3:  Console.WriteLine("Hello World");

   4: }

   5:  

   6: Thread tt = new Thread(new ThreadStart(Hello)); //指派Hello方法

   7: tt.Start(); //開始執行Thread

於第6行，Thread建構式僅接受兩種Class型態。一個就是上面所是的ThreadStart，另一個就是今天的主題ParameterizedThreadStart。
ThreadStart 指定的方法必須為無參數型態，而ParameterizedThreadStart 則可以指定方法夾帶參數，但只限制一個且型態為 object 。因此需要透過轉換型態方式來達到所需要的參數型態。

   1: public void showHello(object obj)

   2: {

   3:     string sz = (string)obj; //unboxing

   4:     Console.WriteLine("Say Hello " + sz + " !!");

   5: }

   6:  

   7: public void Hello()

   8: {

   9:     Thread tt;

  10:     tt = new Thread(new ParameterizedThreadStart(showHello));

  11:     tt.Start("Chris"); //boxing

  12:     Thread.Sleep(2000);

  13:     tt.Abort();

  14: }

其實使用ThreadStart 也是可以傳入參數，只是需要符合其指定的方法必須為無參數型態，因此我們必須使用Class 包裝方式將參數放入其中。

   1: public class PrintHello

   2: {

   3:     public string name;

   4:     public void Hello()

   5:     {

   6:         Console.WriteLine("Hello " + name + " !!");

   7:     }

   8: }

   9:  

  10: public void Hello2()

  11: {

  12:     Thread tt;

  13:     PrintHello p = new PrintHello(); // create class

  14:     tt = new Thread(new ThreadStart(p.Hello)); // use class method

  15:     p.name = "chris";  // configure parameter

  16:     tt.Start();

  17:     Thread.Sleep(2000);

  18:     tt.Abort();

  19: }

以上為C#  Thread 帶入參數應用紀錄

Windows Live Writer with push blogs

首篇文章，利用微軟blog編輯器上傳。

以下為利用WLW使用 Code Snippet外掛呈現經典程式碼

   1: #include <iostream>

   2:  

   3: using namespace std;

   4:  

   5: int main(void)

   6: {

   7:     cout<<" Hello World!! "<<endl;

   8:     

   9:     return 0;

  10: }