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TFrameBrowser Demo
Internet Component Suite - ICS

Demo Quick Facts -- Please Read

For online browsing, enter the URL. For example:
www.pbear.com/ or github.com/BerndGabriel/HtmlViewer
To view a local html or image file, use the File menu or enter file:/// followed by the filename.
This document is a resource contained within this program. To view this document again in the future, select Help|Demo Information from the menu or enter res:///page0.htm.
To compile this demo program for your own needs, see Compiling the Demo.
The latest HtmlViewer is available at: https://github.com/BerndGabriel/HtmlViewer
ICS and the SSL DLL files may be downloaded from https://wiki.overbyte.be/wiki/index.php/ICS_Download

The HTML Component set consists of the THtmlViewer, TFrameViewer, and TFrameBrowser components. All three are HTML document display components:

	THtmlViewer	The basic component. THtmlViewer displays single (non-frame) documents. It forms the basis for the other two components.
	TFrameViewer	Displays both Frame and single HTML documents. TFrameViewer is oriented more for local disk file use.
	TFrameBrowser	Also displays Frame and single HTML documents. However, TFrameBrower is oriented toward Internet style protocols and URL usage. Additional code and/or components are generally required to use TFrameBrowser.

Demo Program

The FrameBrowserId demo program illustrates how the TFrameBrowser component might be used in a complete application.

The demo program supports the following protocols:

	http	Internet online protocol
	https	Internet online SSL protocol (optional)
	file	Internet local file protocol
	res	Specail protocol to read HTML documents from an application's resources

Protocol Details

When initially loading an HTML document, the full URL including the protocol should be used. From that point on, TFrameBrowser is capable of adding the protocol and path to partial URLs found in the document.

The http, https, and file protocols supported by the demo program are standard. URLs using these protocols are in the form:

  http://www.pbear.com/index.html
  file:///c|/thtml4/framedem.htm

The res protocol may be used to access HTML documents and their images stored in a program's resources. URLs with the res protocol have the form:

  res:///helpinfo.html

The res protocol supports document extensions of HTM, HTML, GIF, JPG, JPEG, PNG, BMP, CSS, and TXT. See Adding HTML Documents to an Application's Resources for information on how to add HTML resources to an application.

Additional special protocols may be easily added by the programmer. Protocols might be defined for reading encrypted files or reading HTML from a database, for instance. See Adding Your Own Protocols.