Qt-interest Archive, October 2007
drawing on the icon of a QSystemTray object
Message 1 in thread
Good evening to all.
I would like to draw a couple of rectangles over the icon of a QSystemTray
Object, representing the throughput of the network.
A timer will read the data which represent the network statistics and
will produce a rectangle on the SystemTray whose height should be
proportional to the statistics.
How can i draw the rectangle?
Should i create a class inheriting from a QSystemTray and a QWidget and
reimplement the paintEvent to draw the rectangle?
At every timer timeout(), if i repaint() the SystemTray, will the previous
drawn rectangle be deleted and the new one painted?
Thanks for any hint.
Giacomo
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Message 2 in thread
Giacomo wrote:
> Good evening to all.
> I would like to draw a couple of rectangles over the icon of a QSystemTray
> Object, representing the throughput of the network.
>
> A timer will read the data which represent the network statistics and
> will produce a rectangle on the SystemTray whose height should be
> proportional to the statistics.
>
> How can i draw the rectangle?
>
The size of the icon for the system tray differs from system to system.
As a result, draw whatever you want on a large QPixmap/QImage (100x100
maybe). Convert it into a QIcon. Then, QSystemTrayIcon::setIcon(icon) in
your timeout code. QSystemTrayIcon will use QIcon to get the appropriate
scaled down size.
Girish
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