×
Namespaces

Variants
Actions
Revision as of 07:03, 8 November 2010 by flycarl (Talk | contribs)

用Qt控制音量键

From Nokia Developer Wiki
Jump to: navigation, search
Article Metadata
Tested with
Devices(s): Nokia N97, N8
Compatibility
Platform(s): S60 5th Edition symbian
Symbian
Article
Keywords: volume control
Created: (20 Oct 2010)
Last edited: flycarl (08 Nov 2010)

Overview

由于QT中还没有提供对音量键的响应,需要使用symbian Remote control API 控制 音量键。

参照Qt和Symbian C++的混合编程TSS000432 - Utilising media keys

文件夹volumeKey中的 VolumeKey 类提供了一个VolumeKeyPressed( int )信号,

当按音量键 下时 有信号EVolumeDown,

当按音量键 上时 有信号EVolumeUp, 由此可以在程序中控制音量。

使用了QtMobility的multimedia 来播放声音,在代码中设置一个手机中的歌曲名。播放后按音量键可以观察到音量变化。


Download

File:PlayerVolumeKey.zip



History

20 October 2010 第一版,直接参照 TSS000432 - Utilising media keys border="2" 08 November 2010 第二版,在Qt程序中使用Symbian Audio Playback API播放声音
292 page views in the last 30 days.

Was this page helpful?

Your feedback about this content is important. Let us know what you think.

 

Thank you!

We appreciate your feedback.

×