Transparency problems with system tray in Windows

I use a class named SvgIconEngine that is subclassed from QIconEngineV2 to paint the system tray's (QSystemTrayIcon) icon.

Code:

---

SvgIconEngine *engine = new SvgIconEngine;
engine->loadSvgFromFile(":/icon.svg");
mSysTray->setIcon(QIcon(engine) ); // mSysTray = QSystemTrayIcon

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The paint code is the following:

Code:

---

void SvgIconEngine::paint(QPainter *painter, const QRect& rect,
    QIcon::Mode mode, QIcon::State state)
{
    mRenderer.render(painter, rect); // mRenderer = QSvgRenderer object
}

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In Windows XP I have this problem:
http://www.kolumbus.fi/lliehu/sekala...emtrayicon.png

Where there should be the transparency there are some weird colorful pixels which undoubtedly are not part of system tray's background.

I have this problem only in Windows. In Linux/KDE everything works perfectly.

Anyone has an idea?

Does it have any effect if you insert the following line:

Code:

---

void SvgIconEngine::paint(QPainter *painter, const QRect& rect,
    QIcon::Mode mode, QIcon::State state)
{
    painter->fillRect(rect, Qt::transparent); // <---
    mRenderer.render(painter, rect); // mRenderer = QSvgRenderer object
}

---

?

PS. Attach images instead of using links to external sites, please.

Quote:

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Originally Posted by jpn

Does it have any effect if you insert the following line:

Code:

---

painter->fillRect(rect, Qt::transparent); // <---

---

?

PS. Attach images instead of using links to external sites, please.

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No it doesn't. But thanks. And I didn't know you can attach an image. I'll do that next time.