Such as buttons

Xem 1-20 trên 22 kết quả Such as buttons
  • You have learned how to write simple programs to create and display GUI components. Can you write the code to respond to user actions, such as clicking a button? In order to write such code, you have to know interfaces. An interface is for defining common behavior for classes (especially unrelated classes). Before discussing interfaces, we introduce a closely related subject: abstract classes.

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  • Exposing data through bindable properties of your VM is only part of the answer The ViewModel needs to do more than simply manage data properties What about logic executed as a result of user action such as clicking a button?

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  • Load new kinds of image files at runtime, such as progressive JPEG images and non- animated GIF and PNG files. If you load an animated file, the first frame of that animation appears in the SWF file. Bitmap caching lets you improve the performance of your applications at runtime by caching a bitmap representation of your vector button or movie clip instances at runtime. You can use ActionScript code to access this property or select the instance and then select an option in the Property inspector to cache the instance.

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  • Laboratory coats (labcoats) made of cotton or synthetic fibres are commonly used in research laboratories and hospital departments where there is a risk of minor radioactive contamination. The conditions of the work, such as whether flammability needs to be considered, are a factor in the selection of the fabric. Short jackets and smocks do not protect the lower body. Full length coats need to be fully fastened to ensure that spills or splashes of radioactive substances do not contaminate personal clothing underneath.

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  • Volume 6B, Motif Reference Manual, is a complete programmer’s reference for the Motif toolkit. The Motif toolkit provides a complete set of widgets, such as buttons, scroll bars, menus, and dialog boxes, for developing graphical user interfaces. It also includes a library of functions for creating and manipulating those widgets. The second edition of the Motif Reference Manual covers Motif 2.1, the latest release of Motif. This book includes

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  • iPhone and iPad In Action, compiled by mobile software developer and blogger Brandon Trebitowski, simplifies existing iPhone topics while also updating them to account for the 3.4 SDK framework including iPad coverage. Beyond covering the basics of iPhone development, this edition also explores exciting topics such as the accelerometer, p

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  • This is a book about user interface design. As a consequence, you’ll find lots of screenshots and only very little code. Several of the authors don’t even have a programming background, but they all share the same passion for the iPhone and for developing apps of the highest standards in terms of user experience. David Barnard of App Cubby is one such person; he has created a suite of essential utilities that enjoy great popularity on the App Store. In Chapter 1, he takes you through the process of perfecting entry views and presenting data, which both play central roles...

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  • If you use Visual Web Developer or Visual Studio, you first need to create a new website. Start Visual Web Developer and select File, New Web Site. The New Web Site dialog box appears (see Figure 1.1). Enter the folder in which you want your new website to be created (such as “Chapter1”) in the Location field and click the OK button.

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  • Are you a programmer looking for a new challenge? Does the thought of building your very own iPhone app make your heart race and your pulse quicken? If so, then Beginning iPhone Development is just the book for you. Assuming only a minimal working knowledge of Objective-C, and written in a friendly, easy-to-follow style, Beginning iPhone Development offers a complete soup-to-nuts course in iPhone and iPod Touch programming.

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  • Although Windows Forms is a mature and full-featured toolkit, it’s hardwired to essential bits of Windows plumbing that haven’t changed much in the past ten years. Most significantly, Windows Forms relies on the Windows API to create the visual appearance of standard user interface elements such as buttons, text boxes, check boxes, and so on. As a result, these ingredients are essentially uncustomizable.

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  • Push-to-talk over Cellular (PoC) was the first IMS-based service deployed by several mobile operators because it does not require the deployment of new radio technologies. PoC can run on top of low-bandwidth and high-delay links, which are inappropriate for running other types of services, such as voice calls. PoC is a walkie-talkie type of service. Users press (and hold) a button when they want to say something, but they do not start speaking until their terminal tells them to do so (usually by beeping). ...

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  • GETTING STARTED WITH MYSQL MySQL timestamps are based on a human-readable date and, since MySQL 4.1, use the same format as DATETIME. As a result, they are incompatible with Unix and PHP timestamps, which are based on the number of seconds elapsed since January 1, 1970. Don t mix them. Storing predefined lists MySQL lets you store two types of predefined list that could be regarded as the database equivalents of radio button and check box states: • • ENUM: This column type stores a single choice from a predefined list, such as “yes, no, don t know” or “male, female.

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  • Encoding Customizing Settings If you’re not content with a preset, or if you have additional needs (such as resizing the source), you can click on the Settings button to customize the settings. (You can even save your customizations as a preset of your own.) Figure 12-4 shows the Settings interface. The upper left quadrant allows you to see various sizes of the source material, as well as crop the source prior to encoding. The bottom left quadrant allows you to create cue points that will be embedded in the video during encoding. Between those areas is the video timeline, which you can...

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  • Playhead Movement Figure 5-1. navigation_01.fla demonstrates simple navigation Placing a stop() action in any frame script is a means of halting playback of that timeline without user interaction—perhaps at the end of an animation or to support a menu or similar need to display a single frame. Only the timeline in which the stop() action is used will stop, so if the main timeline is stopped, movie clips will continue to animate. Let’s take a more interactive approach and look at invoking the stop() action via user input, such as clicking a button.

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  • 124 Chapter 3: Elements of Style input[type="text"] { background-color: #ffff99; } input elements exist within interactive forms (see Chapter 2, “The HTML Language”) and come in a variety of types, including checkboxes, radio buttons, and text fields. The preceding CSS statement provides a light yellow background color to input text fields like this: Pseudo-Classes and Pseudo-Elements Pseudo-classes extend the capability of CSS statements to select HTML elements based on certain states or circumstances.

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  • 104 Chapter 2: The HTML Language for instance. Radio buttons are controls that work such that one and only one button is “on” at any time. When you click a different radio button, the button that was on goes “off,” and the button you just clicked becomes the “on” button. Radio buttons are created by input elements with the type attribute set to "radio". A radio button is a member of a set if it has the same value for its name attribute as other radio buttons in the same set.5 For example: Male Female Other The value attribute supplies the value...

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  • Building Rich User Interfaces ❘ 517 Introducing the Surface View Under normal circumstances, your applications’ Views are all drawn on the same GUI thread. This main application thread is also used for all user interaction (such as button clicks or text entry). In Chapter 9, you learned how to move blocking processes onto background threads. Unfortunately, you can’t do this with the onDraw method of a View, as modifying a GUI element from a background thread is explicitly disallowed.

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  • Access to wireless data services such as e-mail, news, stock quotes, flight schedules, weather forecasts, etc. is already a reality for cellular phone and pager users. However, the user interface of these services leaves much to be desired. Users still have to navigate menus with scroll buttons or ‘‘type in’’ information using a small keypad. Further, users have to put up with small, hard-to-read phone/pager displays to get the results of their information access. Not only is this inconvenient, but also can be downright hazardous if one has to take their eyes off the road while driving....

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  • The home controller application described in this application note allows the user to program on and off times for up to sixteen devices, using a 2 x 16 liquid crystal display and five push buttons. A built-in light sensor can be used to turn on lights at dusk, and turn them off at dawn. The home controller is designed to facilitate experimentation with home automation using the PIC16F877A. In addition to the PIC16F877A, the board will accept any other PICmicro MCU that shares the same pinout, such as the PIC18F452. Therefore, experimenters may expand on the application using the higher...

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  • 1. The music jukebox (a) and temperature calculator (d) are good client-side JavaScript applications. Even though the jukebox relies on server storage of the music files, you can create a more engaging and responsive user interface of buttons, swappable images, and information from a plug-in, such as LiveAudio. The temperature calculator is a natural, because all processing is done instantaneously on the client, rather than having to access the server for each conversion.

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