Hi All,

I just installed Cairo on R 2.5.1 on windows XP.  My hope was to get to see
the transparency output e.g.  http://had.co.nz/ggplot2/stat_smooth.html
ggplot2 - stat_smooth , which I finally managed to do.  However, I find the
Cairo device, which I access either through CairoWin() or Cairo(type="win"),
is pretty shaky in a number of respects :

- whatever portion of the Cairo device that is covered by the R command
window does not get drawn.  I noticed changing the size of the Cairo window
by dragging one of its corners with the mouse does refresh the whole window
sometimes

- a simple plot or qplot command works, e.g. qplot(x=kg.hab,y=Cout.ton,
data=ech2).  When one starts to add xlab, ylab and main then things start
getting shaky to the point the display becomes blank.  At that point, even
reverting back to a simple plotting command that worked 5 seconds ago won't
bring back the display.  One has to dev.off() and start again.

Besides the interactive windows display, I also wanted to use Cairo's PNG
support so I went and tried one of my 
png(filename = ...) 
 commands with 
CairoPNG(filename = ...) 
 and the output was also blank.

Are there additional steps besides a package install of Cairo I have to
worry about ?

TIA,

Yves Moisan
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