Hi ,
Bellow is my code. 

 Dim img As Image = System.Drawing.Image.FromFile("E:\Images\form.gif")

 Dim gr As System.Drawing.Graphics = Graphics.FromImage(img) 

------------------
Error line :  Dim gr As System.Drawing.Graphics = Graphics.FromImage(img) 
-----------------


In that above code .
If i use .GIF images  i am getting an Error :
A Graphics object cannot be created from an image that has an indexed?
But if i use .jpg images i am not getting any errors ?
any idea to solve this porblem.

> A Graphics object cannot be created from an image that has an indexed?


This a Microsoft "By Design" issue.  However, there is nothing stopping you 
from using GDI.

You can get a GDI device context for any bitmap. Microsoft's com IPicture, 
IPictureDisp intefaces
will load and write .gif files.  You can also get a device context dc from 
these interfaces so that you
can use any of the GDI functions.

If you want to stick with the System.Drawing API, you either use Lockbits or 
convert the .gif to a 24bpp bitmap
work with that bitmap and then recalculate the palette and reindex the 
bitmap to 8bpp and finally save it as a .gif.

Check out Bob Powell's excellent site for sample code to work with  .gif 
palettes and images:
http://www.bobpowell.net/


"mcimaging"  wrote in message 
news:FC32BC84-9868-4FAA-9E48-981B82104704@microsoft.com...

> Hi ,
> Bellow is my code.
>
> Dim img As Image = System.Drawing.Image.FromFile("E:\Images\form.gif")
>
> Dim gr As System.Drawing.Graphics = Graphics.FromImage(img)
>
> ------------------
> Error line :  Dim gr As System.Drawing.Graphics = Graphics.FromImage(img)
> -----------------
>
>
> In that above code .
> If i use .GIF images  i am getting an Error :
> A Graphics object cannot be created from an image that has an indexed?
> But if i use .jpg images i am not getting any errors ?
> any idea to solve this porblem.
>
>
>
>
>
> 

Create a new bitmap the same size as the GIF, create a graphics object 
around that bitmap (it will have a compatible PixelFormat), and draw the GIF 
image onto it.

Example:

Using img As Bitmap = Bitmap.FromImage("E:\Images\form.gif")
    Dim output As New Bitmap(img.Width, img.Height)

    Using g as Graphics = Graphics.FromImage(output)
        g.DrawImage(img, 0, 0)
        'Do whatever else you need to with this image.
    End Using
End Using

Andrew

"mcimaging"  wrote in message 
news:FC32BC84-9868-4FAA-9E48-981B82104704@microsoft.com...

> Hi ,
> Bellow is my code.
>
> Dim img As Image = System.Drawing.Image.FromFile("E:\Images\form.gif")
>
> Dim gr As System.Drawing.Graphics = Graphics.FromImage(img)
>
> ------------------
> Error line :  Dim gr As System.Drawing.Graphics = Graphics.FromImage(img)
> -----------------
>
>
> In that above code .
> If i use .GIF images  i am getting an Error :
> A Graphics object cannot be created from an image that has an indexed?
> But if i use .jpg images i am not getting any errors ?
> any idea to solve this porblem.
>
>
>
>
>
>