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# file: runme2.tcl
# This file illustrates the low-level C++ interface
# created by SWIG. In this case, all of our C++ classes
# get converted into function calls.
catch { load ./example[info sharedlibextension] example}
# ----- Object creation -----
puts "Creating some objects:"
set c [new_Circle 10]
puts " Created circle $c"
set s [new_Square 10]
puts " Created square $s"
# ----- Access a static member -----
puts "\nA total of $Shape_nshapes shapes were created"
# ----- Member data access -----
# Set the location of the object
# Note: the base class must be used since that's where x and y
# were declared.
Shape_x_set $c 20
Shape_y_set $c 30
Shape_x_set $s -10
Shape_y_set $s 5
puts "\nHere is their current position:"
puts " Circle = ([Shape_x_get $c], [Shape_y_get $c])"
puts " Square = ([Shape_x_get $s], [Shape_y_get $s])"
# ----- Call some methods -----
puts "\nHere are some properties of the shapes:"
foreach o "$c $s" {
puts " $o"
puts " area = [Shape_area $o]"
puts " perimeter = [Shape_perimeter $o]"
}
# Notice how the Shape_area() and Shape_perimeter() functions really
# invoke the appropriate virtual method on each object.
# ----- Try to cause a type error -----
puts "\nI'm going to try and break the type system"
if { [catch {
# Bad script!
Square_area $c # Try to invoke Square method on a Circle
puts " Bad bad SWIG!"
}]} {
puts " Well, it didn't work. Good SWIG."
}
# ----- Delete everything -----
puts "\nGuess I'll clean up now"
# Note: this invokes the virtual destructor
delete_Shape $c
delete_Shape $s
puts "$Shape_nshapes shapes remain"
puts "Goodbye"
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