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Providing help is about much more than just responding to the F1 key; it s about providing an intuitive user interface and adding support when the user needs it. The support must be made available through the channels that the user knows so the help is intuitive. By providing tooltips and What s this help for most widgets, many questions can be avoided. When tooltips no longer help, a wizard can be used, or you can attempt to redesign the user interface to avoid problems. The latter must always be an option, but sometimes a wizard is the best alternative. To make information available, you can use the status bar to give the user the same information regardless of what the user is doing. But don t count on the user seeing the status bar at all times if the working mode is changed by accident, users usually don t go for the status bar; instead they go to wherever they were when the change took place. The final piece of a help system is online documentation. The Qt Assistant can help you by providing a nice interface to your documentation. Simply compile your documentation into a set of HTML documents, create a documentation profile, and use the Assistant as your help client.

Follow these steps to configure the properties:

The problem with SGML languages in this regard and HTML is one particular example is that they expect parsers to know the rules about which elements can be nested inside which other elements, and this leads to constructions like this unordered list <ul>, inside which are several list items <li>: <ul><li>First<li>Second<li>Third<li>Fourth</ul> At first this might look like a series of <li> elements that are more and more deeply nested, so that the final word here is four list elements deep.

hen you deploy your application for the international market you have to provide localized versions. The reasons for doing so go far beyond the disparate languages spoken by the world s population; in fact, there are disparities regarding how time, dates, and monetary values are represented; and even more complex written language issues such as whether text should be read from the right or the left.

Internationalization and localization are actually two parts of the same process. Internationalization is Tip about freeing your application from any ties to a specific location to make it independent of any specific language or culture. Localization is the next step to take an internationalized application and adapt it to a specific location with a specific language and culture.

But since HTML in fact says that <li> elements cannot nest, an HTML parser will understand the foregoing snippet to be equivalent to this more explicit XML string: <ul><li>First</li><li>Second</li><li>Third</li><li>Fourth</li></ul> And beyond this implicit understanding of HTML that a parser must possess are the twin problems that, first, various browsers over the years have varied wildly in how well they can reconstruct the document structure when given very concise or even deeply broken HTML; and, second, most web page authors judge the quality of their HTML by whether their browser of choice renders it correctly This has resulted not only in a World Wide Web that is full of sites with invalid and broken HTML markup, but.

Before you start dealing with all the details that have to be managed for a successful adaptation to different languages and cultures of your application, have a look at the tools Qt provides for managing this.

also in the fact that the permissiveness built into browsers has encouraged different flavors of broken HTML among their different user groups. If HTML is a new concept to you, you can find abundant resources online. Here are a few documents that have been longstanding resources in helping programmers learn the format: www.w3.org/MarkUp/Guide/ www.w3.org/MarkUp/Guide/Advanced.html www.w3.org/MarkUp/Guide/Style The brief bare-bones guide, and the long and verbose HTML standard itself, are good resources to have when trying to remember an element name or the name of a particular attribute value: http://werbach.com/barebones/barebones.html http://www.w3.org/TR/REC-html40/ When building your own web pages, try to install a real HTML validator in your editor, IDE, or build process, or test your web site once it is online by submitting it to http://validator.w3.org/ You might also want to consider using the tidy tool, which can also be integrated into an editor or build process: http://tidy.sourceforge.net/ We will now turn to that weather forecast for Phoenix, Arizona, that we downloaded earlier using our scripts (note that we will avoid creating extra traffic for the NWS by running our experiments against this local file), and we will learn how to extract actual data from HTML.

Upcoming block. You will see a map of the United States appear in the background of the design surface.

Did you know that internationalization is often written as i18n, where 18 is the number of characters Tip

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