Reading the data array from Tcl/Tk to C

[Silentkiller]

Hi
I managed to open an image file in Tcl/Tk. How can i read the data arrays of the images into C program? Please enlighten me. Thanx!

With Regards
S C Ho

 

[marsd]

Do you need complicated IPC(shared memory type thing) or do you need a simple pipe?

proc feedData {pname adata num} {
upvar $adata local
#open the program for read/write
   if {[catch {set phandle [open "| $pname" r+]} err_out]} {
        puts $err_out
        return -1
      }

#read the numerically ordered array into the listening
#programs input
     for {set x 1} {$x <= $num} {incr x} {
          puts $phandle $local($x)
     }
catch {close $phandle}
}

Other simple options include using sockets.
OTOH:
If you need a shared memory or sophisticated
C intensive approach I would try comp.lang.tcl.

Good Luck