Picturebox Redraw Problem

[Geespot]

Hi

Because vb.net no longer has a autoredraw property on there picturebox's i had to put all the drawing code into this..

Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)


no that works fine, i can move the picturebox off screen, bring it back and it will redraw it self


but it doesnt seem to work when i have the picturebox inside a panel ( which i need because of the scrollbars ). If i scroll the picturebox around using the panels scrollbars its as if the (vb6) autoredraw = false

How can i overcome this problem?

[slx47]

dont use a panel then, use a another picture box or something ...

[hellswraith]

It works great for me. All you need to do is make the PictureBox's SizeMode property Autosize, and the panel's AutoScroll property to true. Then when the picture in the picturebox is larger than the panel, the scrollbars will appear automatically. Just put the top left corner of the picture box in the top left corner of the panel. I have not a single problem with this configuration.

[Geespot]

Sadly i cant use sizemode=autosize because im not using a ready made image

slx47: i have a feeling the same will happen with another picturebox anyway


heres a image showing whats wrong




all the white part around the grid is there because i scrolled the picturebox with the panels scrollbars
but if i move the form off the screen and bring it back again, it will redraw it self correctly

[wej42]

me.refresh try that?

[Geespot]

done it, I had to create a BITMAP variable and do my normal drawing onto that

then on the normal picturebox Paint event, just copy the Bitmap variable to the picturebox.image

works a treat and hardly any flicker

[MrPolite]

what's the program you are making anyways?

[Geespot]

Icon editor, for no reason, just to get practise with vb.net

coming along great