Fade Filter

I would like to make a fade filter to essentially create a border and background around the hero icons at the left of the screen and around the tooltip pop-up window at the right. What would the dimensions of the picture be to fit the screen without stretching?

Well then, I think I have the dimensions right on this image, but I get it converted into a fade filter with a transparent middle. This is a image I want to be a fade filter that is constantly displayed. Could someone convert it into a .blp to work as a fade filter?

Well, I got bored and converted it to a blp. I'm actually curious as to whether it'll work or not. But anyway, you should get WC3 Image Extractor II. As long as you can save the picture as a tga (or maybe a jpg), you can convert it to a blp (or from a blp).

I'm not sure why it is not working, a regular fade filter, the panda and cub filter, works fine but when I use the custom one it just puts the whole screen white or waht ever color I assign. Does it need special alpha channels to make it so it does not apply a color?

First the middle needs to alpha. Second the stretching is completely wrong. Third you need to learn how to import. Take a look at the pic.