Perl/TkFAQ-11.9.如何获取画布的大小？调整了大小之后呢？

原文： 11.10. How do I bind different actions to different areas of the same Canvas? KOBAYASI Hir

原文： 11.5. How do I redraw a line on a Canvas? By calling the ->coord method on the item as

原文： 10.16. How do I get the entry in an Entry? You want to call get on the return value of the

原文： 11.9. How do I get the size of a Canvas? After a re-size? $canvas->cget(-width); simply

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： 11.6. How do I use the Canvas as a geometry manager? In a call to create a window (or anyt

原文： 10.8. How do I configure a Scrollbar to scroll multiple widgets? Note that the widget type

原文： 10.9. How do I display a bitmap? You can display X bitmaps on your widgets with the -bitma

原文： 10.10. How do I display an image? You will want to get a "Photo" handle on the file as in