Transparent bitmaps overlapped at runtime

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#1414

From: Romano Signorelli
Date: Wed, 09 Jan 2002 07:48

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Hello,
I'm using JBuilder 4 pro with Personal Java 3.1 JDK (1.1.8 compliant) for an
embedded application.

Asynchronuosly, I need to create various bitmaps, and, at paint time, to
draw them one over one, using transparency.
The final image is a multiple-bar graph with overlapped trend graphics. Each
graph is associated to different field parameters and data.
When a graph need to be modified (new data arrives), I can draw the whole
image simply using the other bitmaps and the new graph, without recreate all
the bitmaps.

I don't know how to create an offscreen - transparent bitmap with JDK 1.1.8
(with Java 2 is easy).
Any suggestion?

Thanks in advance, bye.
Romano Signorelli

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Subject: Transparent bitmaps overlapped at runtime
Date: Wed, 9 Jan 2002 08:48:24 +0100
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