In the work need to display in the video playback interface to control the volume of the slider, so learn a bit about volume control (to use the real machine)
Avplayer: Provides a Volume control API, but only supports IOS7
Avaudi
This instance realizes uses the flash to control the volume the effect, may enter the volume value in the text box to adjust the volume, the final effect and the interface as shown in Figure 1, to achieve this effect, the concrete operation steps are as follows
Figure 1 "
key to set the delay.Design Scenario 2:Set a Volume mirror variable volume_2 (volume_2 set as a global variable), qdial get the value of volume_2 and judge it with the current value, and send it after the direction volume+ (ADKey5) and volume-(ADKEY6) signal to LPC, directly perform the add and subtract operation.Problem found:1, with the qdial
Mac OS X: volume control, etc. 1. set the boot audio volume: mute: sudo nvram SystemAudioVolume = % 80 "minimum volume: sudo nvram SystemAudioVolume = % 00 maximum volume: sudo nvram SystemAudioVolume = 2 Note: when the user changes the
Mplayer Volume Control
1 Mplayer-af volume=-10 *.mp3The range of volume can be-200 to +60. -200 is mute. and +60 is noise.When each song is on the air, the volume is reset to the volume at startup, and you can't improve the sound
C # two methods to control the system volume/microphone size
Scenario: when playing a video device, you need to control the volume. The following methods can meet your requirements:
Method 1: Change the system volume settings
[DllImport ("user32.dll")] static extern void ke
When developing a multimedia application or game application, you need to use the volume control key to set the volume of the program. There are multiple audio streams in the Android system. The setVolumeControlStream (int streamType) function in the Activity can be used to set the audio streams controlled by the volume
a small skill that is not known by volume regulation
Volume control is a very simple move, just press F11 or F12 to reduce or increase the volume, but here are two tips:
* Mute When adjusting: you will find that every time you press F11 or F12, there is a sound effect, let the user know the current system
attributes in the callback event handler function, for example, the following code:
1: Label1.Text = TextBox1.Text;
However, in the AJAX application environment, ViewState requires code to download data redundancy. Therefore, FineUI has long implemented an XState mechanism suitable for AJAX within it to reduce data redundancy, accelerate page rendering.
However, please note that the use of XState in FineUI does not enable ViewState. The traditional ASP. NET
Mini-series recently developed embedded Linux playerThere's a lot of sweat in the first few moments.Q1:alsa control volume requires amixer. But Amixer can only control the system volumeHow do I control only the software volume?Google said it can use the Softvol plugin, but t
From: http://rainhomepage.appspot.com/2010/05/hardware-volume-controls-audio-stream-setvolumecontrolstream
When developing multimedia applications or game applications, you need to use the volume control key to setProgram. There are multiple audio streams in the Android system.Setvolumecontrolstream(INT streamtype) You can set the audio stream controlled by the
When developing multimedia applications or game applications, you need to use the volume Control key to set the program's volume size. There is more than one audio stream in the Android system, and through the function setvolumecontrolstream (int streamtype) in the activity, you can set up the audio stream controlled by the v
XP system cannot find volume control program what to do
(1) The volume Control program is still:
1. Open Control Panel
2. Click Add/Remove Programs
3. Click Add Delete Windows Component
4. Open Attachment option
5. Select "Multimedia" (a small tick on the front)
6. To
Tint lvol = 6;
Cr keys to control phone volume API provides buttons to control the volume of mobile phones during calls.
-Ktelephonyincallearvolume and ktelephonyincallloudspeakervolume Cr keys can be used to increase or decrease the phone volume during a call.
Sample Cod
C # often needs to control the volume of the system in developing Windows applications, in two ways:
1. Use Win API control
2. Using C + + DLL control
Win API Control:
The system volume can be controlled using both user32.dll
To put the volume control panel in the lower-right corner of the desktop, the system always prompts "because no volume control is installedProgramWindows cannot display the volume control on the taskbar. "This problem was finally
recently, Win7 system users reflect that the sound of the computer is normal, that is, there is no horn icon on the taskbar. Then go to the Control Panel on the sound and audio device properties you want to check the "Put volume icon in the taskbar", but you are prompted "because the volume control program is not insta
Scenario: You need to control the volume when doing the playback device, the following methods will meet your requirementsMethod One: Change the system volume settings [DllImport ("User32.dll")] static extern void keybd_event (byte bvk, byte Bscan, UInt32 dwFlags, UInt32 dwext Rainfo); [DllImport ("User32.dll")] static extern Byte Mapvirtualk
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.