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<Title>WndTabs Technology</Title>
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</OBJECT><H1>WndTabs Technology</H1>
<p>The Window Tabs Add-In (WndTabs) is another freeware add-in available from the WndTabs site
(<a href="http://www.wndtabs.com">http://www.wndtabs.com</a>).
The WndTabs source code is freely available and includes many useful classes
and utility modules. Line Counter makes use of some of these classes and modules:
<br>
<ul>
<li><b>Configuration Variables With Automatic Registry Persistence</b> -
The <b><i>Config.cpp</i></b> module allows you to easily create configuration
variables for your program. The variables will be saved and retrieved
from the registry using two simple commands: <b>GetConfiguration()</b>
and <b>WriteConfiguration()</b>.<br>
All you have to do is define your variables (which can be of either
integer or string types), in a file called <b><i>CfgVars.h</i></b>.
In this file use the <b>CFG_VAR</b> and <b>CFG_STR</b> macros to declare
your integer and string variables (respectively). To access the
variables, simply #include <b><i>Config.h</i></b> in your source modules,
and thats it!.
<br>
<br>
</li>
<li><b>HTML Help Made Easy</b> - By using the HTML Help support
module (<b><i>HHSupp.cpp</i></b>),
you can easily add HTML Help support to your application and its
dialogs/property pages. The support module will do the
following for you:<br>
<ul>
<li>Try to load the HTML Help component dynamically. Help won't be
provided if the load fails, but your application will keep on
running without a problem.
</li>
<li>Allow you to make calls to HTML Help API.</li>
<li>Easily create dialogs and property sheets with context sensitive
help (that little '?' on the title bar of the dialog). You can
either write a simple, text-only description for your dialog
items, or use a full-blown HTML page. Both are supported by
<b><i>HTMLHelpBase</i></b>, and are as simple as adding one
macro to your dialog class.
</li>
<li>Easily add help support to menu items and commands (for full MFC
applications.</li>
</ul>
And more!<br>
<br>
<br>
<br>
</li>
<li><b>Property Pages For Setting Program Configuration</b> - <b><i>AutoPropPage.cpp</i></b>
defines a base class for a property page that knows all about
configuration variables. Just give it a list of these variables,
and you have extensive support for the functionality of the "OK", "Apply",
and "Cancel" buttons.<br>
In fact, the simple needs of Line Counter require nothing more than
simply subclassing from the provided base class. More hidden power
lies behind the CAutoPropPage methods <b>Changed()</b>, <b>ChangedAny()</b>,
<b>OrigVal()</b>, and <b>PrevVal()</b> which can be seen in action
in the WndTabs sources.
</li>
</ul>
Make sure to take a look at the WndTabs sources to see the features of the
functions described above in further depth and detail!.
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