This week's book giveaway is in the OCAJP forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide 1Z0-808 and have Jeanne Boyarsky & Scott Selikoff on-line! See this thread for details.
I'm trying to write a simple site-navigation Applet using Java2D for painting the Applet.
What I've got so far worked (that is, images were displayed the way I expected) but now (and I can't figure out why) the Applet and the gradient paint in the background are shown, whereas the images are not. Debugging the Applet doesn't help, as the images are initialized using Applet parameters defined in the enclosing HTML page.
This is what I have written:
The Applet's parameters are defined correctly in the enclosing HTML page (for better readability, I assigned a value of "null" in the param tag when no image fhile exists. This isn't used in the Applet):
I'd be grateful for any suggestion, as I really can't figure out what went wrong.
Thanks in advance -
The man who sets out to carry a cat by its tail learns something that will always be useful and which never will grow dim or doubtful.
-- Mark Twain
Why are you using the "buffer" object for drawing? If you pass the "g2" object from the paint method into the prepareImage method, then you can use that for drawing directly.
Joined: May 08, 2008
Ulf Dittmer wrote:Why are you using the "buffer" object for drawing? If you pass the "g2" object from the paint method into the prepareImage method, then you can use that for drawing directly.
I thought I'd need the reference to a BufferedImage for double-buffered painting of the Applet. But why are th images not displayed? They were at first and then all of a sudden (do those things ever happen otherwise?) they weren't any more. That was about at the time when I was trying to calculate the images' bounding boxes. So, as far as I know, nothing of any structural importance had changed, but the images were gone ... strange!
I'll give it a try with passing in the g2 from the paint method, though. Thanks a lot for your recommendations!