将System.Drawing.Bitmap复制到WriteableBitmap的区域中 [英] Copy a System.Drawing.Bitmap into a region of WriteableBitmap

问题描述

我目前在将System.Drawing.Bitmap集成到WPF WriteableBitmap中时遇到一些问题.

I'm currently having some problems in integrating a System.Drawing.Bitmap into a WPF WriteableBitmap.

我想从Bitmap复制到WriteableBitmap的(X，Y)位置.

I want to copy from the Bitmap to position (X,Y) of the WriteableBitmap.

以下代码显示了我如何尝试执行此操作.

The following code shows how I've tried to do this.

BitmapData Data = Bitmap.LockBits(new Rectangle(0, 0, Bitmap.Width, Bitmap.Height), ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
WriteableBitmap.Lock();

//CopyMemory(WriteableBitmap.BackBuffer, Data.Scan0,  ImageBufferSize);

Int32Rect Rect = new Int32Rect(X, Y, Bitmap.Width, Bitmap.Height);
WriteableBitmap.AddDirtyRect(Rect);
Bitmap.UnlockBits(Data);
Bitmap.Dispose();`

非常感谢

Neokript

推荐答案

使用WritableBitmap.WritePixels.这样可以避免使用非托管代码.

Use WritableBitmap.WritePixels. This will prevent using unmanaged code.

BitmapData Data = Bitmap.LockBits(new Rectangle(0, 0, Bitmap.Width, Bitmap.Height),
    ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);

try
{    
    WritableBitmap.WritePixels(
        new Int32Rect(0,0,Bitmap.Width, Bitmap.Height),
        Data.Scan0,
        Data.Stride,
        X, Y);
}
finally
{
    Bitmap.UnlockBits(Data);
}

Bitmap.Dispose();

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