To introduce the basic concepts of programming with Perl/Tk, let's consider the proverbial "Hello, world" program, which in Perl/Tk looks like this

为了介绍 Perl/Tk 编程的基本概念，先让我们考虑大家熟知的“Hello, world”程序，在 Perl/Tk 中，该程序类似如下

youdao

Note that Tk::NoteBook, as well as the other contributed widgets on CPAN, are not part of the standard Tk distribution, and therefore need to be specified explicitly.

注意， Tk::NoteBook 以及 CPAN 上贡献的其他窗口小部件并不是标准 Tk 贡献的一部分，所以需要显式地指定。

youdao

Start with man Tk (or perldoc Tk), for an overview and a comprehensive list of simple and complex widgets.

输入man Tk(或者perldoc Tk)，就可以看到简单的和复杂的部件的概述和详细列表。

youdao

Below is a three month price history chart comparing the stock performance of TK, versus SXL and RGP.

FORBES: TK Stock Crowded With Buyers

Below is a three month price history chart comparing the stock performance of OSG, versus TK and DPM.

FORBES: Overseas Shipholding Group Getting Very Oversold

Below is a three month price history chart comparing the stock performance of CGV, versus TK and CKH.

FORBES: Shares of CGG Veritas Overbought