我正在尝试将用户的整个桌面捕获为图像。我通过以下方式执行此操作:
public Bitmap CaptureScreen()
{
// Set up a bitmap of the correct size
Bitmap CapturedImage = new Bitmap((int)SystemInformation.VirtualScreen.Width,
(int)SystemInformation.VirtualScreen.Height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
// Create a graphics object from it
System.Drawing.Size size = new System.Drawing.Size((int)SystemInformation.VirtualScreen.Width, (int)SystemInformation.VirtualScreen.Height);
using (Graphics g = Graphics.FromImage(CapturedImage))
{
// copy the entire screen to the bitmap
g.CopyFromScreen(0, 0, 0, 0,
size, CopyPixelOperation.SourceCopy);
}
return CapturedImage;
}
但是,如果我尝试将PixelFormat
from更改Format32bppArgb
为Format16bppArgb1555
,它会产生一个OutOfMemoryException
,我不太明白,考虑到我降低了质量。
有任何想法吗?或者我怎样才能降低这个图像的质量(因为它会以相当频繁的时间间隔通过网络发送)