Please help me stop flickering!

[j2k]

Hi,

I have four imageboxes which update every second. The only problem is, after about three or four updates, the images flicker. Then it will be okay for three or four more, then it will flicker again..

This becomes rather annoying after a prolonged period of time.

Please help!

TIA!

[numtel]

Are you using BitBlt, PaintPicture or just setting the control's property?

[chrisjk]

Give this a whirl http://www.vb-world.net/controls/tip516.html

[j2k]

Chrisjk - I tried that, the flickering is still there though

numtel - I use img1.Picture=LoadPicture (pathtopicture)

[j2k]

Would BitBlt or PaintPicture stop the flickering?

[Jez1]

If U can, change the image box to a picture box - they don't seem to flicker.

[BrianHawley]

You could use two image/picture boxes instead of one.

Do your updates on the back one, then bring it to the front.

That's an old trick for slow (i.e. calculated) drawing operations that you want to seem to appear quickly.

[eiSecure]

You could always use an off-screen buffer with BitBlt. That would probably stop the flickering...

[gdebacker]

When you use LoadPicture() you are reading the file from the harddisk when you load it. Very slow as far as displaying an image goes. If there are not too many images I would use and array of image controls or even an ImageList control. Have all of your images loaded and then just swap them into the one visible image control as needed.

Greg

[eiSecure]

...or you can make it into an animated GIF or an AVI file, and then just play it. ....if it's possible.

[James Stanich]

Declare Function LockWindowUpdate Lib "user32" _
(ByVal hWnd As Long) As Long

This doesn't work? Where in your code are you placing?

[j2k]

How would I use an ImageList, ie what code? I have added all the pictures, but how do I make a picturebox display a picture in the imagelist?

[James Stanich]

Set Picure1.picture=me.Image1.Imagelist(1).Picture