Refresh Problem?

[leazfe]

I have the follow problem: The first time i draw the image I get a blank screen( The image stay only a half second) but the next time the image is good drawn. I have looked for a refresh method but i didn´t find it. Any help?

 

By the way, i have to decide where i want the image to be drawn with the X and Y parameter and it is really stupid. Does anyone know another better way?

 

The code is:

Dim gr As Graphics = Me.CreateGraphics
       Dim bmpAs New Bitmap("image.png")

       gr.DrawImage(bmpUnten, 50, 150)

       gr.Dispose()
       bmp.Dispose()

Thanks,

Alvaro

[philprice]

This happens as when the form is asked to redraw it's self - it calls its OnPaint method (which i am assuming you have not handeled) - therefore it is cleared.

 

What you need to do is capture the Paint event of the control you are drawing the imagine onto - and draw your image onto e.Graphics (where e is the event object captured in the event - you'll see). Everything Invalidate is called (you can do this manually via Control.Invalidate()) the Paint event is called where your code to plot the image should reside.

 

Hope this helps