Drawing Part of an Image

[Nate Bross]

Hi, I have a bitmap, say it's 800x600 pixels. I have a form that is fullscreen (1024x768), but I only want to draw a portian of the bitmap, say 400x400 pixels to the form. Any sugestions?

 

   Private Sub Form1_OnPaint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint
       e.Graphics.DrawImage(BackBuffer, New Point(0, 0))
   End Sub

 

I would like to draw the top left region, 400x400 pixels out of 800x600 of BackBuffer onto the form.

 

I appreciate any advice you might have.

[jo0ls]

Bobs GDI+ faq has some help:

http://www.bobpowell.net/drawing_an_image.htm

 

Here is one of the overloads:

[Visual Basic]
Overloads Public Sub DrawImage( _
  ByVal image As Image, _
  ByVal destRect As Rectangle, _
  ByVal srcRect As Rectangle, _
  ByVal srcUnit As GraphicsUnit _
)

Use it like this:

Dim sourceRectangle As New Rectangle(0, 0, 400, 400) 
Dim targetRectangle As New Rectangle(0, 0, 400, 400) 
e.Graphics.DrawImage(backbuffer, targetRectangle, sourceRectangle, GraphicsUnit.Pixel)

[Nate Bross]

Thanks man, I feel silly the overload was right there, I must have missed it. Thanks alot.