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DesktopPD/ExtraBar/!ExDocs/Docs/upgrading

This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.

Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.

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<html>
<head>
<title>ExtraBar - Upgrading from versions 0.xx</title>
</head>
<body bgcolor="#ffffff" text="#000000" link="#0000dd" alink="#0000dd" opmargin=8 leftmargin=8 rightmargin=8>

<h1><img src="images/smlogo.gif" align="right">ExtraBar - Upgrading</h1>

<hr noshade>

<p>If you are upgrading to ExtraBar 1.xx from a 0.xx version then there are important changes that you should familiarise yourself with.</p>

<p>The most important change is that this version of ExtraBar has been written to integrate as closely with the Risc OS desktop as possible. This has meant a number of changes have been made;</p>

<table width="100%">
<colgroup><col width="60" align="center"><col></colgroup>

<tbody>
<tr><td><B>1.</B><td><B>Sprites are no longer stored by Extrabar.</B></tr>
<tr><td><td><p>Instead of Extrabar storing its own set of sprites, separate to those used by the window manager, it has handed all responsibility back to the window manager.</p>

<p>If you want to include a sprite in a button then you will need to <tt>*IconSprites &lt;file&gt;</tt> the file first.</p>

<tr><td><B>2.</B><td><B>Dynamic buttons.</B></tr>
<tr><td><td><p>When defining a dynamic button, ExtraBar will now automatically detect its presence by the first letter in the text field being a <B>#</B>. It is also possible now to have a sprite in a dynamic button rather then just text. The sprite is defined in the sprite field of the alter button window.</p>

<p>The 'Extra info' field has also now been removed. Rather then defining it as a separately, any extra information required by a dynamic button is defined in the text field with the dynamic item. For example to define a button that has a clock face, 24 hour time without seconds you would enter the following;</p></tr>

<tr><td>
<td>

<center>
<table border=0 width="60%" cellspacing=2 cellpadding=4>
<tr bgcolor="#dddddd"><th>Field</th><th>Text</th></tr>
<tr><td><I>Text</I></td><td>#time "%24:%mi"</td></tr>
<tr><td><I>Sprite</I></td><td>sm!clock</td></tr>
</table>
</center>

<tr><td><td><p>The command field are unchanged except that the fall in line with the rest of Risc OS the command separator has changed from <I>{com}</I> to the more normal <I>|M</I>.</p>

<tr><td><B>3.</B><td><B>Internal commands</B>

<tr><td><td><p>In previous versions of ExtraBar, there where a number of internal commands used within Extrabar. These have now been removed. This is to save memory and to make it easier in the future to add new functions.</p>

<p>A side effect of this is that the commands can now be used inside of the Obey files when they are run inside of the desktop. There is a known problem though with TaskWindows and you should avoid running the commands from them.</p>

<tr><td><B>4.</B><td><B>!F12Toggle boot patch</B>

<tr><td><td><p>With ExtraBar 0.xx you required a patch to be added to your boot sequence if ExtraBar was started at boot time. This patch prevented ExtraBar opening its main window behind the Pinboard.</p>

<p>This patch is nolonger required.</p>   

</tbody>
</table>

<H2>Loading old Extrabar (pre 1.00) files</H2>

<p>If you load an old ExtraBar file (pre 1.00) then it will be converted to the new file format by the <tt>!ExtraBar.RMStore.!Convert</tt> script. If the file contained any sprites then Extrabar will automatically load these in to the shared sprite pool. You can then save them separately from the <tt>ExtraBar&nbsp;=&gt&nbsp;Save&nbsp;=&gt&nbsp;Sprites</tt> sub menu.</p>

<p>The conversion script will automatically convert the command separator used in the script to <I>|M</I> for use with the 1.xx versions of ExtraBar.</p>

<p>The conversion script will automatically convert old style dynamic buttons in to the new style definitions, as use by version 1.xx of ExtraBar.</p>

<hr noshade>

<p align="right">If you have any problems or queries about ExtraBar 1.xx then you can<br>contact me at <a href="mailto:davemac@atlantic.oaktree.co.uk">davemac@atlantic.oaktree.co.uk</a>.

</body>
</html>
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00000f90  2f 68 74 6d 6c 3e                                 |/html>|
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