How to Change Default Audio Device

最新推荐文章于 2025-01-24 15:56:39 发布

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最新推荐文章于 2025-01-24 15:56:39 发布

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分类专栏： Windows 文章标签： audio microsoft internet function google user

本文链接：https://blog.youkuaiyun.com/flower4wine/article/details/6362143

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本文介绍了Microsoft对于默认音频播放/录制设备的哲学观点，并提供了一种技术上正确的设置方法，尤其是在Windows 98及更高版本中。此外还讨论了一个未公开的函数SetDefaultAudioEndpoint在Vista中的使用。最后提到了一个开源项目Rainmeter，它包含了一个子项目用于演示如何通过mmdeviceapi.dll设置默认音频设备。

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I quoted much contents from some posted spreaded in the coner of internet, but did organize them a little. You can find all references inside the body :-)

The Microsoft philosophy regarding default audio playback/record is that it should not be changed progmatically by user applications.

Technically the correct method of setting the default audio device in OS >= Win98 would be using the SetupAPI Functions when the audio device is installed using the SetupPreferredAudioDevices keyword in the driver INF file. This is the only fully documented method I am aware of.

Microsoft Vista has an undocumented function in mmdeviceapi.dll exported as SetDefaultAudioEndpoint which could be used to set the default audio device. But once again it is not intended for use.

Fortunately I found an open-source project on Google Code, Rainmeter, which contains source code example of how to get routines from mmdeviceapi.dll and achieve the goal of setting default audio device. It's a sub-project in folder Plugins/PluginWin7Audio.

Rainmeter Homepage: http://code.google.com/p/rainmeter