原文： 11.4. What things can be created on a Canvas? The following types can be used in $canvar-&
原文： 11.1. Display a bitmap? Unlike other widgets the Canvas does not take the -bitmap configur
原文： 11.2. Erase a display? To erase something like a bitmap call delete on the item. Assuming
原文： 11.10. How do I bind different actions to different areas of the same Canvas? KOBAYASI Hir
原文： 10.3. How do I arrange the layout of my widgets? To control the layout and appearance of w
原文： 11.8. How do I get a PostScript(c) output of a Canvas w/ widgets? In general you don't. Yo
原文： 11.5. How do I redraw a line on a Canvas? By calling the ->coord method on the item as
原文： 11.6. How do I use the Canvas as a geometry manager? In a call to create a window (or anyt
原文： 11. How do I get a Canvas to ... ? The Canvas widget is the most configurable and versatil
原文： 11.3. Display an Image? Just as for the other widget types there is a two step process of