So I'm creating a UWP app which includes an InkCanvas, as such, I want to store the contents as a variable so that I can show a preview of the canvas in the menu.
My question is, what is the best bitmap to use, as there appear to be a number of options.
The SoftwareBitmap is included in Windows.Graphics.Imaging, whereas the BitmapImage is part of Windows.UI.XAML.Media.Imaging, both of which are available in a UWP app.
Can the UWP Image class for displaying images use either of these formats?
Which is most appropriate in my case?
答案 0 :(得分：1)
所以做了很多实验，似乎与Image的{{1}}控件一起使用，Windows.UI.XAML.Controls工作得相当好。
如果SoftwareBitmap有SoftwareBitmapSource和Image.Source（或SoftwareBitmap），则BitmapPixelFormat.Bgra8可以分配到BitmapAlphaMode.Premultiplied。来自SoftwareBitmapSource页面上的备注部分：
XAML应用中显示的SoftwareBitmap必须采用BGRA像素格式，并预先乘以alpha值
一切正常，现在可以缩小位图，因为BitmapAlphaMode.None和InkCanvas之间的大小差异会使缩略图/预览看起来很差。