On Fri, 26 Jan 2007, ????? ??????? wrote: > Somehow autofilter doesn't allow this message to be posted, > will try another time. > > -----Original Message----- > From: Yuri Volchik <[EMAIL PROTECTED]> > To: r-devel@r-project.org > Date: Thu, 25 Jan 2007 22:27:13 +0000 > Subject: Using Windows API functions in R > >> >> Hi to all. >> >> In programming one application i have to "press" button to have >> application started, which i would like to do automatically from R. >> To do that i want to use library "user32" function "SendInput" >> >> http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winui/winui/windowsuserinterface/userinput/keyboardinput/keyboardinputreference/keyboardinputfunctions/sendinput.asp >> >> So far i managed to write the following >> >> system(shQuote("C:/Program Files/1.exe"),wait=F) >> system32 <- file.path(Sys.getenv("windir"),"system32") >> user32 <- file.path(system32,"user32.dll") >> dyn.load(user32) >> .C("SendInput",..)
You cannot make use of WINAPI calls from .C (or otherwise in R): it is set up for _cdecl calls only. You will need to write some wrapper C code. >> And now i'm at loss how to represent the data structure needed for >> correct call to that function, may be somebody could help me with >> this? You cannot create C structures using .C, only a few basic array types. See ?".C" . Since you need wrapper code, you can create the structures needed there. -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
