tray icon 無法透明的可行之法？

adm

Subject:

[quote=caleb]
不小心看到這篇：


<a href="http://blogs.sun.com/yongsun/entry/why_the_2nd_nested_window" target="_blank">http://blogs.sun.com/yongsun/entry/why_the_2nd_nested_window</a>


看來又是 GTK+ 的 bug / feature, 換一層顯示大概就有透明了。


&nbsp;


<a id="why_the_2nd_nested_window" name="why_the_2nd_nested_window" href="http://blogs.sun.com/yongsun/entry/why_the_2nd_nested_window" title="why_the_2nd_nested_window">Why the 2nd nested window in systray_icon is solid gray?</a>




星期四 十一月 06, 2008


From gnome-2.24, iiim-panel shows a gray border in gnome-panel, when
gnome-panel is set with &quot;Solid color&quot; or &quot;Background image&quot;. It turns
out that the 2nd nested window (GtkDrawArea, or GtkEventBox) does not
inherit the style from its ancestor containers. I tried to use gdk_window_set_back_pixmap to make it transparent, but failed. <img class="smiley" src="http://blogs.sun.com/images/smileys/sad.gif" alt=":(" title=":(" /> 
 
Finally , I had to use the 1st nested window (GtkEventBox) to draw the icon and text. 
 
P.S., here is the container hierarchy we used to have,

<pre>
egg_tray_icon
\_ event_box
\_ hbox
\_ drawing_area 
</pre>
[/quote]

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