Developer’s Guide Borland Delphi 7 for Windows PHẦN 8

Đối với các thông số đầu vào và đầu vào / đầu ra, bạn có thể để trống giá trị nếu ứng dụng của bạn cung cấp giá trị tham số trong thời gian chạy. Nếu số liệu sử dụng một tài sản tham số (đối tượng TParameter), các thuộc tính sau đây phải được quy định một cách chính xác: | Writing Web-based client applications Creating Web pages with an InternetExpress page producer Each InternetExpress page producer generates an HTML document that appears in the browsers of your application s clients. If your application includes several separate Web documents use a separate page producer for each of them. The InternetExpress page producer TInetXPageProducer is a special page producer component. As with other page producers you can assign it as the Producer property of an action item or call it explicitly from an OnAction event handler. For more information about using content producers with action items see Responding to request messages with action items on page 34-8. For more information about page producers see Using page producer components on page 34-14. The InternetExpress page producer has a default template as the value of its HTMLDoc property. This template contains a set of HTML-transparent tags that the InternetExpress page producer uses to assemble an HTML document with embedded javascript and XML including content produced by other components. Before it can translate all of the HTML-transparent tags and assemble this document you must indicate the location of the javascript libraries used for the embedded javascript on the page. This location is specified by setting the IncludePathURL property. You can specify the components that generate parts of the Web page using the Web page editor. Display the Web page editor by double-clicking the Web page component or clicking the ellipsis button next to the WebPageItems property in the Object Inspector. The components you add in the Web page editor generate the HTML that replaces one of the HTML-transparent tags in the InternetExpress page producer s default template. These components become the value of the WebPageItems property. After adding the components in the order you want them you can customize the template to add your own HTML or change the default tags. Using the Web page editor The .