[RESOLVED] Help reading pixels

[TurboBob]

Heres how I do It:

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
Public Class Form1
    Dim g As System.Drawing.Graphics
    Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Me.Show()
        Me.BackgroundImageLayout = System.Windows.Forms.ImageLayout.None
        Me.BackgroundImage = System.Drawing.Image.FromFile("C:\Test.bmp")
    End Sub
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim n As Integer, k As Integer
        Dim brush3 As Brush
        Dim mypix2 As Color
        Dim pic As Bitmap ' 
        Dim g As System.Drawing.Graphics
        g = Me.CreateGraphics
        pic = Me.BackgroundImage ' You Can of course say pic=System.Drawing.Image.FromFile("C:\Test.bmp")
        For n = 0 To 400
            For k = 0 To 400
                mypix2 = pic.GetPixel(n, k) ' The piece of the code relevant to your Needs
                brush3 = New SolidBrush(Color.FromArgb(mypix2.A, mypix2.R, mypix2.G, mypix2.B))
                g.FillRectangle(brush3, 0 + n, 400 + k, 1, 1)
                brush3.Dispose()
            Next k
        Next n
    End Sub
End Class

Put this into a project and place a test picture in "C:\Test.bmp"

Put a Button on the form - the form as big as you can.

This paints a copy of the image for pixel 0,0 to 400,400
onto the form 400 pixels down on the y axis.

This is of course a dumb way to duplicate
a portion of the bitmap but I like to use little snippets like this to figure out how thing work.

The two lines of Code you need are to create the bitmap bject and to use it's getpixel method.

Hope this Helps