[folky]

Hi,
I'm building a midlet with Series 60 MIDP Concept SDK Beta 0.3.1 and borland JBuilderX and I'm having a problem with the paint() – repaint() – method.

Sometimes I can’t get the screen refreshed when a call repaint().
This only append when the paint() method need to block in a semaphore or need to wait for some data in a DataInputStream (via Bluetooth). The weird thing is that while the application is still blocked, if I minimize and then maximize the emulator’s windows (in windows XP), the emulator’s screen gets refreshed (while still blocking and waiting for data). This makes me believe that it may be a bug with the emulator.
If I don’t minimize/maximize, the screen only is repaint once the data get received via the Bluetooth DataImputStream.

Here is some interesting parts of my paint() method, it may help to understand what is happening

public void paint(Graphics g) {
g.setColor(WHITE);
g.fillRect(0, 0, Width, Height);
g.drawImagemar,boardLeft,boardTop,Graphics.LEFT|Graphics.TOP);.
g.setColor(BLACK);
for (int i = 0; i < 7; i++) {
g.fillRect(boardLeft, boardCellSize * i + boardTop, (boardCellSize * 6) + 2, 2);
g.fillRect(boardCellSize * i + boardLeft, boardTop, 2, boardCellSize * 6);
}

if (!Plays)
g.drawString("wait for your opponent’s move...", boardLeft, boardTop + boardSize + 5, (Graphics.TOP | Graphics.LEFT));
else
g.drawString("It’s your turn...", boardLeft, boardTop + boardSize + 5, (Graphics.TOP | Graphics.LEFT));

if (!Plays) { //here it blocks until it receive the data via bluetooth
try {
Pos = in.readInt();
Damage = in.readBoolean();
Loose = in.readBoolean();
Plays = true;
}
catch (Exception e) {}
}
}

So when Plays = true, the screen gets refreshed with no problem, but when Plays = false, the problem occurs (even if I use serviceRepaints() after the call of repaint()).

Well I would like to know if this has already appended to someone or if I’m doing something wrong. Well, what to you think about that and the strange thing about minimize / maximize ?
Also note that this problem also occurs with other IDE and that the class extends from Canvas.

[folky]

I've resolved the problem puting all the bluetooth communication code in a thread, like that the paint method does not block anymore.

Anyway, the behavior of the paint method seems very strange to me and I can't explain the minimize/maximize...