volume

问题 I have 2 hard-disk volumes(one is a backup image of the other), I want to compare the volumes and list all the modified files, so that the user can select the ones he/she wants to roll-back. Currently I'm recursing through the new volume and comparing each file's time-stamps to the old volume's files (if they are int the old volume). Obviously this is a blunder approach. It's time consuming and wrong! Is there an efficient way to do it? EDIT: - I'm using FindFirstFile and likes to recurse the

问题 I use the AVAudioPlayer to play a .caf file. My problem is: it is not loud enough for my purpose. Since the ringer sound of the IPhone is much louder I was wondering how I can archive this volume. I already tried to manipulate the .caf file but with no real success. Any ideas? The code I use so far: AVAudioPlayer *newPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL: url error: nil]; self.appSoundPlayer = newPlayer; [newPlayer release]; [appSoundPlayer prepareToPlay]; [appSoundPlayer

问题 I have an EC2 instance that I'd like to take a snapshot of, to use as an AMI for future spot instances. Because of the way I created volume for this instance, it is currently set to not delete upon termination. I want it to delete on termination, so that I can use it for spot instances and not have residual volumes hanging around needing manual deletion. I've combed AWS manual, stack exchange, google, etc and I can only find references to a 'delete on termination' flag, but no explanation of

问题 I am trying to get a UISlider to sync with the volume rocker. I have successfully used the slider to change the system/ringer volume, but I need the slider to move when the rocker moves. any suggestions on how to get the current volume value? I am using the code below to monnitor the volume change: - (void)volumeChanged:(NSNotification *)notification{ AVSystemController* avc = SharedAVSystemController; // my sliders name is customVolume, and this is how I // am trying to get the volume:

问题 I'm trying to mute the PC speaker from my C# console application. I've tried the code suggested on this site and it doesn't affect the volume on my machine. I need the code to work on Win7 and I assume that code only works on XP. I also tried this: [DllImport("winmm.dll", SetLastError = true, CallingConvention = CallingConvention.Winapi)] public static extern int waveOutSetVolume(IntPtr uDeviceID, int dwVolume); waveOutSetVolume(IntPtr.Zero, 0); But when the waveOutSetVolume method is called,

问题 I would like to list all available, removable hard drives in a batch script and continue to work with the chosen option. I know there are options like wmic logicaldisk get caption,volumename to list the hard drives and SET /P M=Type 1 or 2 then press ENTER: IF %M%==1 GOTO One IF %M%==2 GOTO Two to create a menu. But how do I store the volumes in variables and list them in a menu? Something like: Choose from list: 1) D:\Harddrivename1 2) E:\Harddrivename2 Enter option: 2 Any help is

问题 I'm trying to create a relatively simple setup to develop and test npm packages. A problem was in the fact, that after you mounted a code volume to the container it replaces node_modules. I tried a lot of generally logical stuff, mostly aimed to move node_modules to another location and then reference it within configuration files. It works, but the solution is ugly. Also, it's not good practice to install webpack globally, but my solution requires it. However, after some time I found this

问题 I have an app that plays background music using MPMusicPlayerController and foreground sounds using AVAudioPlayer. I want to control the relative volume so that MPMusicPlayerController is much lower, but setting the volumne changes the overall system volume as if using the buttons on the side of the phone. Is there way to lower the volumne of MPMusicPlayerController without lowering the system volume? MPMusicPlayerController *musicPlayer = [MPMusicPlayerController applicationMusicPlayer];

问题 Is there any way to set the respective volume of a Clip in Java ? I have this method: public static void play(Clip clip) { if (Settings.getSettings().isVolumeOn()) { FloatControl volume = (FloatControl) clip.getControl(FloatControl.Type.MASTER_GAIN); volume.setValue(-1 * Settings.getSettings().getVolume()); clip.start(); } } The Settings.getSettings().getVolume() returns an Integer in the range of 0 - 100 Volumes: 0 : No Sound 40 : Optimal Sound with headphones 60 : Optimal Sound 100: Full

问题 I am trying to understand the documentation at MSDN regarding Device Events and how to trigger a notification whenever a volume has been mounted. I have managed to do this for USB devices using information presented in the following post: detect usb drive/device using delphi as well as other information found on the internet, but I have noticed that it would be easier to detect when a volume has been mounted directly. So my question is: how do I implement Device Events handling in my Delphi