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Graphical user interfaces for Python programs Phần 9

Lớp Văn bản định nghĩa một cửa sổ mới và tạo ra một thể hiện của một widget văn bản. Tùy chọn bổ sung, được mô tả dưới đây, có thể được quy định trong các cuộc gọi phương pháp hoặc trong cơ sở dữ liệu tùy chọn để cấu hình các khía cạnh của văn bản như màu nền mặc định của nó và cứu trợ. | Something up with my banter chaps Four hours to bury đ cut what s happen I ọạ Thursday the tị Did you write this symphony in the shed ciated widget. For example if first is 0.2 and last is 0.4 it means that the first part of the document visible in the window is 20 of the way through the document and the last visible part is 40 of the way through. Text Description The Text class defines a new window and creates an instance of a text widget. Additional options described below may be specified in the method call or in the option database to configure aspects of the text such as its default background color and relief. The text method returns the path name of the new window. A text widget displays one or more lines of text and allows that text to be edited. Text widgets support four different kinds of annotations on the text tags marks embedded windows and embedded images. Tags allow different portions of the text to be displayed with different fonts and colors. In addition Tcl commands can be associated with tags so that scripts are invoked when particular actions such as keystrokes and mouse button presses occur in particular ranges of the text. The second form of annotation consists of marks which are floating markers in the text. Marks are used to keep track of various interesting positions in the text as it is edited. The third form of annotation allows arbitrary windows to be embedded in a text widget. The fourth form of annotation allows Tk images to be embedded in a text widget. Many of the widget commands for texts take one or more indices as arguments. An index is a string used to indicate a particular place within a text such as a place to insert characters or one endpoint of a range of characters to delete. Inheritance Text inherits from Widget. Shared options Option alias Default background bg SystemWindow borderwidth bd 2 cursor xterm font MS Sans Serif 8 foreground fg SystemWindowText height 24 highlightbackground SystemButtonFace highlightcolor .