Why does this QPixmap::fromImage() crash?

[jmsbc]

The problem was that I didn't have a colormap, which was the array that it was trying to index.

Apparently when I try to use fromImage: "..the image is first converted to a 32-bit pixmap and then filled with the colors in the color table." (Qt documentation)

Which is kind of weird that I need to initialize a color table even though i'm using QImage::Format_Indexed8

[wysota]

What do you mean by "even though"? If you are using an indexed format then do you need a colour table. It won't get initialized on its own...