从桌面应用程序运行 Windows 10 的相机应用程序

Question

我只需要在 c# 中运行 Windows 10 的默认相机应用程序。 我尝试了不同的方法，例如：

process.start("camera.exe"):
ms-camera://
microsoft.windows.camera

但都失败了。

它不是商店应用，所以我不能使用“launch URI”方法。

Answer 1

使用它来启动相机应用：

Process.Start("microsoft.windows.camera:");

Answer 2

相机应用程序是通用 Windows 应用程序，因此您不能简单地执行 *.exe。使用 Nasreddine 所示的注册协议或通过IApplicationActivationManager 使用此方法。

使用来自this answer的源代码

public enum ActivateOptions
{
    None = 0x00000000,  // No flags set
    DesignMode = 0x00000001,  // The application is being activated for design mode, and thus will not be able to
                                // to create an immersive window. Window creation must be done by design tools which
                                // load the necessary components by communicating with a designer-specified service on
                                // the site chain established on the activation manager.  The splash screen normally
                                // shown when an application is activated will also not appear.  Most activations
                                // will not use this flag.
    NoErrorUI = 0x00000002,  // Do not show an error dialog if the app fails to activate.                                
    NoSplashScreen = 0x00000004,  // Do not show the splash screen when activating the app.
}

[ComImport, Guid("2e941141-7f97-4756-ba1d-9decde894a3d"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
interface IApplicationActivationManager
{
    // Activates the specified immersive application for the "Launch" contract, passing the provided arguments
    // string into the application.  Callers can obtain the process Id of the application instance fulfilling this contract.
    IntPtr ActivateApplication([In] String appUserModelId, [In] String arguments, [In] ActivateOptions options, [Out] out UInt32 processId);
    IntPtr ActivateForFile([In] String appUserModelId, [In] IntPtr /*IShellItemArray* */ itemArray, [In] String verb, [Out] out UInt32 processId);
    IntPtr ActivateForProtocol([In] String appUserModelId, [In] IntPtr /* IShellItemArray* */itemArray, [Out] out UInt32 processId);
}

[ComImport, Guid("45BA127D-10A8-46EA-8AB7-56EA9078943C")]//Application Activation Manager
class ApplicationActivationManager : IApplicationActivationManager
{
    [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)/*, PreserveSig*/]
    public extern IntPtr ActivateApplication([In] String appUserModelId, [In] String arguments, [In] ActivateOptions options, [Out] out UInt32 processId);
    [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
    public extern IntPtr ActivateForFile([In] String appUserModelId, [In] IntPtr /*IShellItemArray* */ itemArray, [In] String verb, [Out] out UInt32 processId);
    [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
    public extern IntPtr ActivateForProtocol([In] String appUserModelId, [In] IntPtr /* IShellItemArray* */itemArray, [Out] out UInt32 processId);
}

然后通过其 AppUserModelID Microsoft.WindowsCamera_8wekyb3d8bbwe!App 启动相机应用程序：

private void button3_Click(object sender, EventArgs e)
{
    ApplicationActivationManager appActiveManager = new ApplicationActivationManager();
    uint pid;
    appActiveManager.ActivateApplication("Microsoft.WindowsCamera_8wekyb3d8bbwe!App", null, ActivateOptions.None, out pid);
}