On Sun, 2006-09-10 at 22:23 -0400, Raul Z.T. wrote: > Hi everyone , > Well after hours searching in the documentation of GTK+ > without luck , i finnaly decided to ask the experts . Actually im building > an application that displays text using Pango , i modified the background > collor of the drawing area without problem , but how i can give it some > transparency/opacity to that area? i need it as transparent as possible , > my idea is to get the same effect that gives transparent rxvt's and others > , how i can do that? I believe cairo does support rendering with an alpha channel. However, your app will only have true window-level alpha channel on desktops that support that, which on X11 means only when window managers that support composite (in other words a composite manager) are used. Right now the KDE window manager supports composite, but most of the time it is disabled because it conflicts with openGL acceleration (at least on nvidia). The newer rendering systems such as Xgl or AIXGL will work nicely, though. If you want to do pseudo-transparency, which is what rxvt does, you'll need to ask the X server for the background pixmap, then clip it appropriately and shade it and paste it as your background. > > I am using perl-gtk2 (1.21) > Glib 1.120 > GTK+ -> 2.8.15-1 > > on fedora core 5 > > Many thanks in advance! > Raul > > > _______________________________________________ > gtk-list mailing list > gtk-list@xxxxxxxxx > http://mail.gnome.org/mailman/listinfo/gtk-list > _______________________________________________ gtk-list mailing list gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list
