By Tim Hatton
The Eclipse platform keeps to achieve great reputation as either a Java IDE and a Java platform for program programming. one of many middle underpinnings of Eclipse is SWT, the traditional Widget Toolkit. This set of elements can be utilized to boost graphical consumer interfaces in Java,and supply a native-code replacement to Java's Swing and AWT parts. Incorporating the appear and feel of no matter what platform the code is administered on, SWT bargains a lightning-fast method of development GUIs, all of which truly glance like they belong at the platform on which they're run.
But you know what you need to do--so wading in the course of the fundamentals of person interface layout, graphical parts, and what a button does is just a waste of time. input SWT: A Developer's computing device . In ordinary Developer's computer sort, you are going to the best way to take SWT out for a spin, make it give you the results you want, and switch it the wrong way up, all with out wasted phrases or area. every one lab during this workstation info a selected job; you could learn from the 1st web page to the final, search for simply what you must understand, or even squeeze this booklet into your desktop bag as a short reference in case you overlook the way to create a multi-tabbed view.
This booklet covers:
- Downloading and configuring Eclipse and SWT
- Menus, toolbars, and buttons
- Building tabbed layouts and folders
- SWT's specific coolbar regulate
- Adding listeners and responding to occasions
- Building an entire SWT-based application
Read or Download SWT: A Developer's Notebook PDF
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Extra resources for SWT: A Developer's Notebook
In the tree on the lefthand side of the window, expand the Java branch and select Classpath Variables, then click the New button to display Figure 1-12. Figure 1-12. jar file. Click OK to return to the dialog shown in Figure 1-11, with your new entry displayed. To use your variable in a project, use the Project Properties page, as you did earlier (Figure 1-8). jar file manually by clicking Add External JARs, click Add Variable to invoke Figure 1-13. Figure 1-13. Selecting a classpath variable 32 33 In Figure 1-13, you see all the variables that are declared in Eclipse.
Example 2-7. dispose( ); } } Running Example 2-7 creates three child windows, as shown in Figure 2-5. Figure 2-5. 7. Opening True Dialogs ChildShellExample demonstrated how to open a child window within the confines of a parent window, but this is not the same as opening a true dialog. A dialog window is one that halts processing of code in the parent window until the user takes some action in the dialog. In ChildShellExample, the parent window code continued to execute even while the child window was opened.
No event loop is required for the ChildShell. Why? Because the event loop for the parent shell handles the dispatching of events for all objects opened within the parent. The child remains open until it is closed by the user or until the parent is closed. To execute ChildShell, you must create a class that creates an instance of Shell to serve as the parent, 41 42 and then creates an instance of ChildShell. This is demonstrated in Example 2-6. Example 2-6. dispose( ); } } When you create an instance of ChildShellExample you see the result shown in Figure 2-4.