 |
 | Home | Contact Us | FAQ | Search & Site Map | Link to Us |
 | Sign In | Join | Other 45 Sites in Network |
Java Forum / General / May 2005Applet paint problem (only on IE)
I've written an animated, double buffered graphical applet for JDK 1.1.8 (It has to run without the user having to download a new JRE) that is run in a table cell on a web page. It uses threads for the animation, with a delay based on the speed of the animation. The problem is that on IE, the image does not display until it regains focus, ie the page is scrolled down, then up, or a second window obscures it and is then removed. According to the Java console, it has started fine. It works as it should on FireFox and Opera, and works in IE when it is the only thing on the page. I have tried everything I can think of (removing the delay, extra repaints, trying every kind of embedding into the web page, etc, even trying to get keyboard focus) but to no avail. Does anyone know what the problem might be? Thanks, Greg Sometimes invalidate/validate is needed; the need for this seems to be different for different JVMs. For a program in a Frame it is simple to test this hypothesis by resizing the Frame. > It works as it should on FireFox and Opera, and works in IE when it is the > only thing on the page. I have tried everything I can think of (removing > the delay, extra repaints, trying every kind of embedding into the web > page, etc, even trying to get keyboard focus) but to no avail. I placed the invalidate/validate before the repaint() command in the thread's Run procedure, as that seems to be the most obvious place to put it,but it doesn't seem to have helped. Is that the right place for it? Greg > Sometimes invalidate/validate is needed; the need for this seems to be > different for different JVMs. For a program in a Frame it is simple to [quoted text clipped - 4 lines] >> (removing the delay, extra repaints, trying every kind of embedding into >> the web page, etc, even trying to get keyboard focus) but to no avail. It sounds like that should be fine. >I placed the invalidate/validate before the repaint() command in the >thread's Run procedure, as that seems to be the most obvious place to put >it,but it doesn't seem to have helped. Is that the right place for it? It was. It turned out to be a specialist module elsewhere on the page that was stealing the focus. Thank you very much for your help though. Greg > It sounds like that should be fine. > >>I placed the invalidate/validate before the repaint() command in the >>thread's Run procedure, as that seems to be the most obvious place to put >>it,but it doesn't seem to have helped. Is that the right place for it? > Does anyone know what the problem might be? It is probably the code you are using. Try preparing a small example that shows the problem, <http://www.physci.org/codes/sscce.jsp>.  SignatureAndrew Thompson http://www.PhySci.org/codes/ Web & IT Help http://www.PhySci.org/ Open-source software suite http://www.1point1C.org/ Science & Technology http://www.LensEscapes.com/ Images that escape the mundane Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
|
Reply to this Message
|
 Sign In
 Join
 My Latest Posts My Monitored Threads My Blog My Photo Gallery My Profile My Homepage Start New Thread Enable EMail Alerts Rate this Thread
|
©2008 Advenet LLC Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.