lockbits。如何遍历像素?任何文件的大小限制:我是自学的初学者,我花了这个天似乎像什么。当我再次卡住,我认为我会问这里善良的人们,在代码项目。我一直想通过遍历大的像素(10K像素10K像素)1位Windows位图和决定对Lockbits。
' Lock the bitmap's bits and put in array
Dim FullRect As New Rectangle(0, 0, FWBitmap.Width, FWBitmap.Height)
Dim bmpData As System.Drawing.Imaging.BitmapData = FWBitmap.LockBits(FullRect, _
Drawing.Imaging.ImageLockMode.ReadWrite, FWBitmap.PixelFormat)
' Get the address of the first line of bitmap.
Dim ptr As IntPtr = bmpData.Scan0
' Declare an array to hold the bytes of the bitmap.
Dim bytes As Integer = (bmpData.Stride) * (FWBitmap.Height)
Dim EachByte(bytes - 1) As Byte
' Copy the bitmap's RGB values into the array.
System.Runtime.InteropServices.Marshal.Copy(ptr, EachByte, 0, bytes)
当时我通过加强和字节内:{C}
阵列没关系(虽然Visual Studio时,往往不再是非常大的)。不过,我得到数组的像素值不会出现类似于原始位图。我怀疑我缺少明显的东西在这里!