求教这个API函数的用法。(50分)

M

myveremy

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• 2006-09-25

• #1

当一个mediaplayer在播放一个节目时,我想用两个按扭来控制它声音的开与关.<br>（好象要用某个api来做，希望有人帮我下）

 

X

xiammy

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• 2006-09-25

• #2

waveOutClose &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;关闭声音输出设备 <br>waveOutOpen &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 打开声音输出设备

 

M

myveremy

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• 2006-09-26

• #3

樓上的兄弟:<br> &nbsp;可否說下它的具體用法?<br> &nbsp;我直接把handle傳給它,但不行啊!!!!!!!

 

D

dey-999

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• 2006-09-26

• #4

先定义常量<br>CONST<br> &nbsp;MCI_SETAUDIO=$873;<br> &nbsp;MCI_SETVIDEO=$0876;<br>定义结构<br>type MCI_DGV_SETAUDIO_PARMS=record<br> &nbsp;dwCallbackWORD;<br> &nbsp;dwItemWORD;<br> &nbsp;dwValueWORD;<br> &nbsp;dwOverWORD;<br> &nbsp;lpstrAlgorithmChar;<br> &nbsp;lpstrQualityChar;<br>end ;<br><br>procedure wavechange;<br>var<br> &nbsp;s: MCI_DGV_SETAUDIO_PARMS ;<br>begin<br> &nbsp;//关闭声音 &nbsp;如有多个MCI设备,则为midiaplayer2.deviceid......<br> &nbsp;mciSendCommand(MediaPlayer1.DeviceID,MCI_SETAUDIO, MCI_SET_OFF ,integer(@s));<br>//打开声音<br> &nbsp;mciSendCommand(MediaPlayer1.DeviceID,MCI_SETAUDIO, MCI_SET_ON ,integer(@s));<br>END;<br>我试了,没有一点错

 

M

myveremy

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• 2006-09-26

• #5

是否要引用單元????<br><br>提示錯誤: &nbsp; &nbsp; <br>Undeclared identifier: 'mciSendCommand'<br>Undeclared identifier: 'MediaPlayer1'

 

M

myveremy

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• 2006-09-26

• #6

我控制的是windows xp自帶的media player 9媒體播放器<br>(不是我自已用mediaplayer控件寫的媒體播放器)

 

M

myveremy

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• 2006-09-26

• #7

USER mmsystem<br><br><br>var<br> &nbsp;s: MCI_DGV_SETAUDIO_PARMS ;<br> &nbsp;H:Thandle;<br>begin<br> &nbsp; &nbsp;H := FindWindow(nil, 'Windows Media Player');<br> &nbsp; &nbsp;if H &gt; 0 then<br> &nbsp; &nbsp;begin<br> &nbsp; &nbsp; &nbsp; SetForegroundWindow(H);<br> &nbsp; &nbsp; &nbsp; mciSendCommand(H,MCI_SETAUDIO, MCI_SET_OFF ,integer(@s));<br> &nbsp; &nbsp;end;<br>END;<br><br>但是沒有效果(沒有关闭声音)?????

 

风

风卷残月

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• 2006-09-26

• #8

帮助,离线资料,Google, 基本上这些就可以解决问题了

 

I

idea1861

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• 2006-09-26

• #9

仔细研究

 

M

myveremy

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• 2006-09-26

• #10

繼續中!!!!!!

 

Z

zj_mpy

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• 2006-09-26

• #11

mciSendCommand(MediaPlayer1.DeviceID,MCI_SETAUDIO, MCI_SET_OFF ,integer(@s));

 

M

myveremy

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• 2006-09-26

• #12

還沒搞定啊!!!!!!

 

M

myveremy

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• 2006-10-20

• #13

多人接受答案了。