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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Qt-based LiveConnect Plugins</title></head><p><body bgcolor=#ffffff><h1 align=center>Qt-based LiveConnect Plugins for Netscape and Explorer</h1><p><hr><p>The Qt-based Netscape Plugin software makes it easy to writepluginssuch that they can be used on both Unix/Linux and Windows/95/NT,in the Netscape and MS-Explorer, and any otherWWW browser supporting the same protocol.<p><h2>How-to</h2><p><ol> <li>Download the <a href="http://home.netscape.com/comprod/development_partners/plugin_api/index.html"> Plugin SDK from Netscape</a>, and copy the following files from there to <tt>$QTDIR/extensions/nsplugin/src</tt> : <multicol cols=2> <ul> <li>common/npwin.cpp <li>common/npunix.c <li>include/npapi.h <li>include/npupp.h <li>include/jri.h <li>include/jri_md.h <li>include/jritypes.h </ul> </multicol> <li>Build the Netscape Plugin extension library, found in the <tt>extensions/nsplugin/src</tt> directory of your Qt distribution. This produces a static library to be linked with your plugin code. <li>Read the NSPlugin components in the <a href="annotated.html">class documentation</a>. <li>Examine the example plugins: <ul> <li><a href=trivial-trivial-cpp.html>Trivial example</a> <li><a href=qtimage-qtimage-cpp.html>Image example</a> <li><a href=grapher-grapher-cpp.html>Graphing example</a> </ul> <li>Do most of your development as a stand-alone Qt application - debugging Netscape Plugins is cumbersome. You may want to use <tt>signal(2)</tt> in your plugin to enable core-dumps if your browser disables them. <li>Note the platform-specific build steps below. <li>Read about the raw plugin interface <a href="http://developer.netscape.com/docs/manuals/communicator/plugin/index.htm"> in Netscape's handbook.</a> <li>If files viewed by a plugin are provided by an HTTP server (using a <tt>http://...</tt> URL) then the server must be configured to send the correct MIME type for the file, such as by editing the <tt>mime.types</tt> file of Apache. If the files are viewed via a <tt>file://...</tt> URL, then the browser will use the filename extension to decide the file type (and hence the plugin to load) - the user may need to set the filename extension in the Helpers or Applications section of their browser preferences.</ol><p>We are working on streamlining the build process for Qt-based Netscape Plugins. <p><h3>Building under X11</h3><p><ul> <li>The Makefiles in the examples are appropriate for UNIX/X11. <li>The user must install the resulting Shared Object in the Plugins directory of the browser.</ul><p><h3>Building under Windows</h3><p><ul> <li>Qt needs to be built as a static library when building Netscape plugins, we are looking into the problem of making it work with Qt as a dynamic library. <li>Plugins must be named <tt>np</tt><i>name</i><tt>.dll</tt>, or the browser will ignore them. <li>The link step must include: <ul> <li><tt>/def:</tt><i>name</i><tt>.def</tt> <li><tt>/dll</tt> <li>a compiled resource file defining the file/MIME types accepted by the plugin. </ul> <li>The user must install the resulting DLL in the Plugins directory of the browser.</ul><p><h2>Known Bugs</h2><p>The Qt-based LiveConnect Plugin binding code has a number ofminor bugs, but is sufficiently stable for most production applications.All of these have known solutions which we are working to implement.<p><ul> <li> MSIE 4.0 support is poor. <li> Crashes on X11 if window is closed via window manager. <li> Keyboard problems on Windows.</ul><p><address><hr><div align="center"><table width="100%" cellspacing="0" border="0"><tr><td>Copyright ?? 快捷鍵說明
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