November 1999
Intermediate to advanced
832 pages
19h 28m
English
Content preview from Practical Programming in Tcl & Tk, Third EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Frames and Toplevel Windows
Frames have been introduced before for use with the geometry managers. There is not much to a frame, except for its background color and border. You can also specify a colormap and visual type for a frame. Chapter 38 describes visual types and colormaps on page 540.
A toplevel widget is like a frame, except that it is created as a new main window. That is, it is not positioned inside the main window of the application. This is useful for dialog boxes, for example. A toplevel has the same attributes as a frame, plus screen and menu attributes. The menu attribute is used to create menubars along the top edge of a toplevel. This feature was added in Tk 8.0, and it is described on page 397. On UNIX, the screen option lets ...
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