Anonymous web server - Building a Better Window with System.Windows.Forms If you
Building a Better Window with System.Windows.Forms If you have read through the previous 18 chapters, you should have a solid handle on the C# programming language as well as the foundation of the .NET architecture. While you could take your newfound knowledge and begin building the next generation of console applications (boring!), you are more likely to be interested in building an attractive graphical user interface (GUI) to allow users to interact with your system. This chapter is the first of three aimed at introducing you to the process of building traditional form-based desktop applications. Here, you ll learn how to build a highly stylized main window using the Form and Application classes. This chapter also illustrates how to capture and respond to user input (i.e., handle mouse and keyboard events) within the context of a GUI desktop environment. Finally, you will learn to construct menu systems, toolbars, status bars, and multiple-document interface (MDI) applications, both by hand and using the designers incorporated into Visual Studio 2005. Overview of the System.Windows.Forms Namespace Like any namespace, System.Windows.Forms is composed of various classes, structures, delegates, interfaces, and enumerations. Although the difference in appearance between a console UI (CUI) and graphical UI (GUI) seems at first glance like night and day, in reality the process of building aWindows Forms application involves nothing more than learning how to manipulate a new set of types using the C# syntax you already know. From a high level, the hundreds of types within the System.Windows.Forms namespace can be grouped into the following broad categories: Core infrastructure: These are types that represent the core operations of a .NET Forms program (Form, Application, etc.) and various types to facilitate interoperability with legacy ActiveX controls. Controls: These are types used to create rich UIs (Button, MenuStrip, ProgressBar, DataGridView, etc.), all of which derive from the Control base class. Controls are configurable at design time and are visible (by default) at runtime. Components: These are types that do not derive from the Control base class but still provide visual features to a .NET Forms program (ToolTip, ErrorProvider, etc.). Many components (such as the Timer) are not visible at runtime, but can be configured visually at design time. Common dialog boxes: Windows Forms provides a number of canned dialog boxes for common operations (OpenFileDialog, PrintDialog, etc.). As you would hope, you can certainly build your own custom dialog boxes if the standard dialog boxes do not suit your needs. 605 C H A P T E R 1 9
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