Windows10 特定版本的目标代码，例如 Build 10586

Question

如您所知，ElementCompositionPreview.GetElementVisual 可在 Windows 10 Build 10586 上访问，我想要一个可以同时针对 Build 10586 和 Build 10240 的应用程序。

有谁知道当应用程序在 Build 10586 上运行时如何使用 Compositor 和 ElementCompositionPreview.GetElementVisual 以及在 Build 10240 上运行时如何使用其他东西。

像这样：

  #if WINDOWS_UWP Build 10586
       _compositor = new Compositor();
       _root = ElementCompositionPreview.GetElementVisual(myElement);
  #endif


 #if WINDOWS_UWP Build 10240
  //other code
 #endif

有什么想法吗？

Answer 1

我认为您可以使用 System.Reflection 从您的应用程序中获取 OS 版本，例如：

var analyticsInfoType = Type.GetType("Windows.System.Profile.AnalyticsInfo, Windows, ContentType=WindowsRuntime");
var versionInfoType = Type.GetType("Windows.System.Profile.AnalyticsVersionInfo, Windows, ContentType=WindowsRuntime");

if (analyticsInfoType == null || versionInfoType == null)
{
    //not on Windows 10
    return;
}

var versionInfoProperty = analyticsInfoType.GetRuntimeProperty("VersionInfo");

object versionInfo = versionInfoProperty.GetValue(null);
var versionProperty = versionInfoType.GetRuntimeProperty("DeviceFamilyVersion");
object familyVersion = versionProperty.GetValue(versionInfo);
long versionBytes;
if (!long.TryParse(familyVersion.ToString(), out versionBytes))
{
    //can't parse version number
    return;
}

Version DeviceVersion = new Version((ushort)(versionBytes >> 48),
  (ushort)(versionBytes >> 32),
  (ushort)(versionBytes >> 16),
  (ushort)(versionBytes));

if ((ushort)(versionBytes >> 16) == 10586)
{
    _compositor = new Compositor();
    _root = ElementCompositionPreview.GetElementVisual(myElement);
}
else
{
    //other code
}

Answer 2

As you know ElementCompositionPreview.GetElementVisual is accessible on Windows 10 Build 10586, I would like to have one application that can target both Build 10586 and Build 10240

对于UWP应用，只有一个Target版本，根据您的要求，我们可以将Target版本设置为Build 10586，Min版本：Build 10240

Does anyone have an idea of how I could use Compositor and ElementCompositionPreview.GetElementVisual when the application is running on Build 10586 and something else when it is running the build 10240.

请使用Windows.Foundation.Metadata.ApiInformationAPI动态检测特征：

if (Windows.Foundation.Metadata.ApiInformation.IsTypePresent("Windows.UI.Xaml.Hosting.ElementCompositionPreview"))
{
                if (Windows.Foundation.Metadata.ApiInformation.IsMethodPresent("Windows.UI.Xaml.Hosting.ElementCompositionPreview", "GetElementVisual"))
                {
                    _compositor = new Windows.UI.Composition.Compositor();
                    _root = Windows.UI.Xaml.Hosting.ElementCompositionPreview.GetElementVisual(btn1);
                }
                else
                {
                    //Do other things
                }
}

这里有一篇介绍这个的好文章API：Dynamically detecting features with API contracts (10 by 10)

Windows10 特定版本的目标代码，例如 Build 10586

Target code for a specific version of Windows 10, like Build 10586

c#

visual-studio

windows-10

windows-10-universal