-- card: 56820 from stack: in.07 Reference
-- bmap block id: 0
-- flags: 0000
-- background id: 13647
-- name: 


-- part 1 (button)
-- low flags: 00
-- high flags: A004
-- rect: left=13 top=289 right=311 bottom=97
-- title width / last selected line: 0
-- icon id / first selected line: 0 / 0
-- text alignment: 1
-- font id: 0
-- text size: 12
-- style flags: 0
-- line height: 16
-- part name: Statements
----- HyperTalk script -----
on mouseUp
  go to card id 46171
end mouseUp




-- part 2 (field)
-- low flags: 00
-- high flags: 0002
-- rect: left=17 top=169 right=237 bottom=291
-- title width / last selected line: 0
-- icon id / first selected line: 0 / 0
-- text alignment: 0
-- font id: 3
-- text size: 10
-- style flags: 0
-- line height: 13
-- part name: 


-- part 4 (field)
-- low flags: 00
-- high flags: 0002
-- rect: left=290 top=169 right=289 bottom=495
-- title width / last selected line: 0
-- icon id / first selected line: 0 / 0
-- text alignment: 0
-- font id: 3
-- text size: 10
-- style flags: 0
-- line height: 13
-- part name: 


-- part contents for background part 2
----- text -----
Prefixed block

-- part contents for background part 1
----- text -----
When the class mechanism is used to contain classes and routines of a package of some sort, one is usually not interested in creating an object of the class. Instead, the class is used as prefix on a block (or on another class which in turn is used as prefix on a block, if one wishes to specialize the package further.

The class which is used as prefix must be supplied with actual parameters. Example:

-- part contents for card part 2
----- text -----
class DrawingPrimitives(ScreenWidth,ScreenHeight); integer ScreenWidth,ScreenHeight;
begin
   ! -- routines for drawing on a screen;
end;





-- part contents for card part 4
----- text -----
begin
   class DrawingPrimitives...;
   DrawingPrimitives(600,400)
   begin
      ! -- here all drawing routines are
              accessible. ScreenWidth=600,
              ScreenHeight=400;
   end;
end