Question

vb.net如何将图片转二进制

vb.net里面怎么把picturebox1里面的图片转换成二进制数，对每个二进制数进行异或操作后，再用picturebox1显示出来。
回答满意加分三十至五十

Answer 1

'容易，用api，查一查SetBitmapBits
'新建工程，增加一个 command button ， 一个 picture box , 将图片加载到 picture box.
'将代码粘贴到 Form1
Private Type BITMAP
bmType As Long
bmWidth As Long
bmHeight As Long
bmWidthBytes As Long
bmPlanes As Integer
bmBitsPixel As Integer
bmBits As Long
End Type
Private Declare Function GetObject Lib "gdi32" Alias "GetObjectA" (ByVal hObject As Long, ByVal nCount As Long, lpObject As Any) As Long
Private Declare Function GetBitmapBits Lib "gdi32" (ByVal hBitmap As Long, ByVal dwCount As Long, lpBits As Any) As Long
Private Declare Function SetBitmapBits Lib "gdi32" (ByVal hBitmap As Long, ByVal dwCount As Long, lpBits As Any) As Long
Dim PicBits() As Byte, PicInfo As BITMAP, Cnt As Long
Private Sub Command1_Click()
'Get information (such as height and width) about the picturebox
GetObject Picture1.Image, Len(PicInfo), PicInfo
'reallocate storage space
ReDim PicBits(1 To PicInfo.bmWidth * PicInfo.bmHeight * 3) As Byte
'Copy the bitmapbits to the array
GetBitmapBits Picture1.Image, UBound(PicBits), PicBits(1)
'Invert the bits
For Cnt = 1 To UBound(PicBits)
PicBits(Cnt) = 255 - PicBits(Cnt)
Next Cnt
'Set the bits back to the picture
SetBitmapBits Picture1.Image, UBound(PicBits), PicBits(1)
'refresh
Picture1.Refresh
End Sub