


How Can I Control Individual Application Volume Levels Using the Windows Volume Mixer?
Jan 19, 2025 pm 10:53 PMFine control of application volume: Detailed explanation of Windows Volume Mixer
Question: How to control the volume of a single application using volume mixer?
Answer:
The Windows Core Audio Library provides a way to control the volume of a specific application using a volume mixer. Here is an example C# console application demonstrating how to implement this functionality:
using System; using System.Runtime.InteropServices; using System.Collections.Generic; namespace SetAppVolume { class Program { static void Main(string[] args) { const string app = "Mozilla Firefox"; foreach (string name in EnumerateApplications()) { Console.WriteLine("應(yīng)用名稱:" + name); if (name == app) { // 顯示靜音狀態(tài)和音量級別(相對于主音量百分比) Console.WriteLine("靜音:" + GetApplicationMute(app)); Console.WriteLine("音量:" + GetApplicationVolume(app)); // 靜音應(yīng)用程序 SetApplicationMute(app, true); // 將音量設(shè)置為主音量的二分之一(50%) SetApplicationVolume(app, 50); } } } // ... (GetApplicationVolume, GetApplicationMute, SetApplicationVolume, SetApplicationMute, EnumerateApplications 函數(shù)代碼保持不變) ... } }
(The codes of GetApplicationVolume
, GetApplicationMute
, SetApplicationVolume
, SetApplicationMute
, EnumerateApplications
functions are omitted here because they are the same as the original code. In order to avoid redundancy, they are not repeated here. List. )
This code demonstrates how to programmatically access and modify the volume and mute status of a specified application ("Mozilla Firefox"). Note that you need to add the necessary COM references to compile and run this code. Furthermore, this example is for demonstration purposes only, and more robust error handling and user interface may be required in real applications.
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