Pixel images always exist as a rectangle, but it's not hard to limit the mouse events to the star part. With a white, black, or web-legal background color, the "matte" ink mode is the simplest way to go. The downside is that you often get a jagged fringe around the shape from the limited masking ability of that ink mode. You can also use an alpha channel to mask the shape you want with smooth edges and no fringe, but 32-bit images can be RAM and performance expensive. For best appearance of a pixel-based star, I would suggest an 8-bit GIF star image and an 8-bit grayscale mask in the very next slot of the cast after the star (then set the star's ink mode to "mask"). Half the memory of a 32-bit image, same result.
Bottom line: the part that's invisible to the eye is also invisible to mouse events.
Ron Woodland
On Tuesday, September 2, 2003, at 02:37 PM, Jeremy P. McKay wrote:
Hi All,
I want to use a star shape for mouse events? Is there any way to do this other than using a bunch of squares and rectangles?
- Jeremy
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