Anyone?
I've replicated this problem on a Mac, running OS X 10.5.6 and on multiple
JDK versions on Linux (1.6.0_11, 1.6.0_07, and 1.5.0_17).
This problem is occurring with QtJambi 4.4.3_01 (open source) version.
Either there is something fundamentally wrong with my code, or there is
something seriously broken in Qt Jambi.
Any pointers or advice would be appreciated.
Thanks,
Michael
On Fri, January 16, 2009 2:04 pm, Michael Quigley wrote:
> Hello!
>
> I'm a relatively new Qt Jambi user. I've been ramping up over the last few
> days, but I've run into a problem that I can't seem to get around.
>
> Here is the code:
>
> ----8<----
>
> package com.quigley.qt.editor;
>
> import com.trolltech.qt.gui.*;
>
> public class Editor extends QMainWindow {
> protected QStatusBar statusBar;
>
> public Editor() {
> QGraphicsScene scene = new QGraphicsScene();
> scene.addText("Hello World");
>
> QGraphicsView view = new QGraphicsView(scene);
> this.setCentralWidget(view);
>
> statusBar = new QStatusBar();
> this.setStatusBar(statusBar);
> }
>
> public static void main(String[] args) {
> QApplication.initialize(args);
> Editor editor = new Editor();
> editor.show();
> QApplication.exec();
> }
> }
>
> ----8<----
>
> When I run this, I see the text "Hello World" get painted onto the
> QGraphicsView, but then it's immediately overwritten with plain white.
>
> This is a simplified version of a more complex program. The more complex
> program has scrollbars on the QGraphicsView (the scene is larger) and more
> complicated elements in the scene (a bunch of QGraphicsEllipseItem
> subclasses). The bigger version exhibits the same problem--the view
> displays the scene and then it's immediately overwritten with plain white,
> and the scrollbars disapppear.
>
> Any insight would be greatly appreciated. I'm hoping this is something
> silly that I'm doing and not a Qt Jambi bug.
>
> For what it's worth, this same code runs fine on another system, but after
> a short while of interacting with the view, it gets replaced with white.
>
> Both environments are virtualized Ubuntu 8.04 (32-bit) instances (one
> using VirtualBox and the other using VMWare Fusion).
>
> Thanks in advance!
> Michael
>
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