Hello John,
Hope you are doing well.
I note the following problem with the last version of gWidgetsRGtk2.
Defining a gradio handler as a function embedded in a proto class leads
to an error :
library(proto)
library(gWidgetsRGtk2)
example = proto(
create = function(.) {
.$window = gwindow(visible=FALSE)
.$choice = gradio(1:3,cont=.$window,handler=.$onChoice)
visible(.$window)=TRUE
},
onChoice = function(.,h,...) {
cat("You clicked",svalue(.$choice),"\n")
},
window = NULL,
choice = NULL
)
example$create()
Error in as(value, "function") :
internal problem in as(): "instantiatedProtoMethod" is(object,
"function") is TRUE, but the metadata asserts that the 'is' relation is
FALSE
Note that is works if I define the onChoice function outside the proto
object, and it also works if a replace the gradio by a gdroplist, so it
seems specific to gradio.
Thank you in advance for your help.
Best wishes,
Yvonnick Noel
University of Brittany, Rennes
France
> sessionInfo()
R version 2.13.0 (2011-04-13)
Platform: x86_64-pc-linux-gnu (64-bit)
locale:
[1] LC_CTYPE=fr_FR.utf8 LC_NUMERIC=C
[3] LC_TIME=fr_FR.utf8 LC_COLLATE=fr_FR.utf8
[5] LC_MONETARY=C LC_MESSAGES=fr_FR.utf8
[7] LC_PAPER=fr_FR.utf8 LC_NAME=C
[9] LC_ADDRESS=C LC_TELEPHONE=C
[11] LC_MEASUREMENT=fr_FR.utf8 LC_IDENTIFICATION=C
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] cairoDevice_2.15 gWidgetsRGtk2_0.0-74 gWidgets_0.0-44
[4] proto_0.3-9.2
loaded via a namespace (and not attached):
[1] RGtk2_2.20.12 tools_2.13.0
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