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   <TITLE>Add a file to the list of recently opened files</TITLE>

   <META NAME="Author" CONTENT="Harold Howe">

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<H3>

Add a file to the list of recently opened files

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<P>

Windows 95 and Windows NT 4 allow users to re-open previous files by selecting

the Documents menu option under the Start taskbar menu. For example, if you open

a document in Microsoft Word, the filename is added to the recently opened

documents list so you can access the file from the taskbar. To add a document to

the list of recently opened files, use the <TT>SHAddToRecentDocs</TT> API function.

Here is an example:

<pre>

<font color="green">#include &lt;shlobj.h></font>

<b>...</b>

SHAddToRecentDocs<b>(</b>SHARD_PATH<b>,</b> <font color="blue">"c:\\cbuilder\\readme.hlp"</font><b>)</b><b>;</b>

</pre>

<P>

<B>Note:</B> The first argument to <TT>SHAddToRecentDocs</TT> should be either

<TT>SHARD_PATH</TT> or <TT>SHARD_PIDL</TT>. If you want to pass the filename as a

string, use the <TT>SHARD_PATH</TT> value. <TT>SHARD_PIDL</TT> allows you to pass

a pointer to an <TT>ITEMIDLIST</TT> (the <TT>ITEMIDLIST</TT> structure relates to shell

programming with the shell namespace functions; <TT>SHGetDesktopFolder</TT>,

<TT>SHGetMalloc</TT> and friends).

</P>

<P>

<B>Note:</B> You can clear all of the items in the list of recent files by passing <TT>NULL</TT>

as the second example.

</P>

<pre>

<font color="navy">// Clear out all documents in the list</font>

SHAddToRecentDocs<b>(</b>SHARD_PATH<b>,</b> NULL<b>)</b><b>;</b>

</pre>

<P>

<B>Note:</B> While testing the code for this FAQ, I found out that the shell will not allow you to add a file to

the recent files list if that file does not have an associated program. For example, I tried to add the file

<TT>UNIT1.~H</TT> to the list. Since files with the <TT>~H</TT> extension don't have a registered program that opens

them, the shell refused to put <TT>UNIT1.~H</TT> in the list. This makes sense. When you select a file from the recent

files list, Windows opens that file with its associated viewer. It can't open a file that has no associated viewer.

This behavior was witnessed on Windows NT 4.

</P>

<P>

<B>Note:</B> There is a a problem with <TT>shlobj.h</TT> and BCB 5. If you include <TT>shlobj.h</TT> in a BCB5 GUI project,

you may get a strange compiler error, such as this:

</P>

<PRE>

[C++ Error] shlobj.h(1762): E2238 Multiple declaration for 'FVSHOWINFO'

[C++ Error] shlobj.h(1936): E2238 Multiple declaration for 'FOLDERSETTINGS'

[C++ Error] shlobj.h(3717): E2238 Multiple declaration for 'DESKBANDINFO'

[C++ Error] shlobj.h(4808): E2238 Multiple declaration for 'SHELLFLAGSTATE'

</PRE>

<P>

You can eliminate these errors by adding the string NO_WIN32_LEAN_AND_MEAN to the conditional defines of your project.

To see what impact this has, open the file <TT>vcl0.h</TT> in  a text editor.

</P>





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