<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <!-- /tmp/qt-3.0-reggie-28534/qt-x11-free-3.0.2/extensions/nsplugin/doc/index.doc:14 --> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <title>Qt-based LiveConnect Plugins</title> <style type="text/css"><!-- h3.fn,span.fn { margin-left: 1cm; text-indent: -1cm; } a:link { color: #004faf; text-decoration: none } a:visited { color: #672967; text-decoration: none } body { background: #ffffff; color: black; } --></style> </head> <body> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr bgcolor="#E5E5E5"> <td valign=center> <a href="index.html"> <font color="#004faf">Home</font></a> | <a href="classes.html"> <font color="#004faf">All Classes</font></a> | <a href="mainclasses.html"> <font color="#004faf">Main Classes</font></a> | <a href="annotated.html"> <font color="#004faf">Annotated</font></a> | <a href="groups.html"> <font color="#004faf">Grouped Classes</font></a> | <a href="functions.html"> <font color="#004faf">Functions</font></a> </td> <td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>Qt-based LiveConnect Plugins</h1> <p> The Qt-based Netscape Plugin software makes it easy to write plugins such that they can be used on both Unix/Linux and Windows/95/NT, in Netscape and Internet Explorer, and any other web browser supporting the same protocol. <p> <h2> How-to </h2> <a name="1"></a><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 <a href="annotated.html">plugin class documentation</a>, and examine the <a href="nsplugin-examples.html">example plugins</a>. <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> <a name="1-1"></a><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> <a name="1-2"></a><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> <a name="2"></a><p> The Qt-based LiveConnect Plugin binding code has a number of minor bugs, but is sufficiently stable for most production applications. <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> <!-- eof --> <p><address><hr><div align=center> <table width=100% cellspacing=0 border=0><tr> <td>Copyright © 2001 <a href="http://www.trolltech.com">Trolltech</a><td><a href="http://www.trolltech.com/trademarks.html">Trademarks</a> <td align=right><div align=right>Qt version 3.0.2</div> </table></div></address></body> </html>