How do I change the master audio volume in my app programatically? - windows-8

I would like write an app where I can manipulate the currently playing song (from the Music app for example) such as jumping to the next song in playlist, restarting it or setting the volume up.
I searched the Windows SDK and tried all samples that seemed relevant to my problem, but I could not find anything that would give me a hint regarding how to do this.
So I would like to ask - How do I mute or change the master volume in my Metro (Windows 8) application?


Metro apps are not allowed to make changes to the system settings. So controlling the Master Volume is not possible from within the metro app. that's y Microsoft provides a settings charm where you can change the volume. the setting's charm is available in right side of your screen.
you can go through this link on MSDN for further clarification
Controllling master volume from with the App

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chrome command line flag for auto sharing system sound

I am developing web automation of Zoom meeting (all the way from creation till joining and leaving thereon).
I have been able to complete the creation, joining and screen sharing automation.
I am using --auto-select-desktop-capture-source=MyTab flag to automatically share the desired tab. Up until here, its all working fine.
Where I am stuck is that the chrome tab gets shared without system sound.
I want to automatically share the screen/tab along with system sound / tab audio.
What is the appropriate chrome flag for sharing audio along with screen?

AppleScript to access system Now Playing, without iTunes

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Programmatically Add/Remove displays on macOS

I'm looking for an API to add and remove displays to/from the system. I've found the Quartz Display Services, but that API mainly lets you modify existing displays for the sake of fullscreen mode for apps and games.
For example, I would like to (via software) disable a display that's currently plugged in, while it is still plugged in. (Kind of like mounting and unmounting for drives)

Windows 8 Set User Account Image

I'm trying to write a small CONSOLE (not metro style) app to quickly change the user account image of the current user to a select image for a setup scrip that I'm running on a bunch of laptops.
They're all Windows 8 and (since it hasn't been out terribly long) I can't find a ton of info on it. I did manage to figure out that you need to use the Windows.System.UserProfile object to do so, but I can't find any documentation on how to do so in a console app.
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In WinRT how to create an application that is always visible?

With windows 8, is it possible to create an application that is always visible? For instance, in previous versions of windows, there is the task bar with quick launch icons. Can I create something similar to the quick launch icons that are always on the screen?

If you are referring to a Windows 8 Store app then the answer is no. You can have a live tile and toast notifications that provides updates to the user which may cause the user to launch your application.
A good article to read to understand how your Windows Store apps will run on Windows 8 go here to learn about Application lifecycle (Windows Store apps). This will explain the App execution state.

It is not possible in the RT version, but the same is possible in the desktop version. If you have a desktop app, you can pin it to the taskbar. But any Window store app cannot be pinned to the taskbar. What you can do instead is move the app to the beginning of your Home screen, so anytime you click the Windows button your app will be visible right in front.

Do you mean always visible in the Star Menu screen? If so, you can add tile updating functionality to your application. As long as the user has the application pinned to the Start Menu, he would see the updates. Check the link below for an introductory tutorial.
http://blogs.msdn.com/b/windowsappdev/archive/2012/04/16/creating-a-great-tile-experience-part-1.aspx

"Quick Launch" has a very specific meaning, which you may or may not have been referring to in your question.
Below is the Quick Launch bar in Windows 8 - essentially a toolbar pointing to a location in your %AppData% directory. Prior to Windows 7 it was available by default, but the ability to now pin items directly to the taskbar rather supersedes it. Here's how you can restore Quick Launch if you really want to :)
It's, of course, available only in the Desktop mode and not on the Modern UI, where pinning a tile is the best you can hope for, and it's all up to the user to pin it AND to determine where it shows up on their Start Screen.

Another option worth mentioning (although more like system tray than quick launch) is lock screen presence. If the user chooses so and your app supports that, he can add it to his lock screen:
either as a a badge (up to 7 apps)
or as a tile notification (single app only)
This is not a way for the user to quickly start your app (other answers have already covered these options) but a way to stay visible and keep your user informed.