c# - 如何在 Windows 商店应用程序中截取屏幕截图

Question

我想在我的应用程序中截取屏幕截图并以唯一名称将其保存在应用程序的本地文件夹中。所以请帮助我。

Answer 1

您可以使用 RenderTargetBitmap 捕获屏幕。试试这个代码:

//create and capture Window
var renderTargetBitmap = new RenderTargetBitmap();
await renderTargetBitmap.RenderAsync(Window.Current.Content);

//create unique file in LocalFolder
var file = await ApplicationData.Current.LocalFolder.CreateFileAsync("screenshotCapture.jpg", CreationCollisionOption.GenerateUniqueName);

//create JPEG image 
using (var stream = await file.OpenStreamForWriteAsync())
{
    var logicalDpi = DisplayInformation.GetForCurrentView().LogicalDpi;
    var pixelBuffer = await renderTargetBitmap.GetPixelsAsync();
    var encoder = await BitmapEncoder.CreateAsync(BitmapEncoder.JpegEncoderId, stream.AsRandomAccessStream());
    encoder.SetPixelData(BitmapPixelFormat.Bgra8,
                            BitmapAlphaMode.Straight,
                            (uint)renderTargetBitmap.PixelWidth,
                            (uint)renderTargetBitmap.PixelHeight, logicalDpi, logicalDpi,
                            pixelBuffer.ToArray());
    await encoder.FlushAsync();
}