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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
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<title>Multi-Configuration Edit preferences</title>
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<div role="main"><h1>Multi-Configuration Edit preferences</h1>
<p>Use the <img src="../images/command_link.png" alt="" > <a class="command-link" href='javascript:executeCommand("org.eclipse.ui.window.preferences(preferencePageId=org.eclipse.cdt.managedbuilder.ui.preferences.PrefPage_MultiConfig)")'>Multi-Configuration Edit</a> preference panel to simultaneously edit properties for multiple project configurations. Its possible to select one or more configurations for editing.</p>
<p>But, then we deal with string list property values, it is not obvious how to concatenate them, if they differ.</p>
<p><img src="../images/cdt_pref-multi-cfg.png" alt="Multi-Configuration Edit preferences tab"></p>
<table width="600px" cellpadding="5" cellspacing="0" border="1" fgcolor="DDD" >
<caption><strong>Property Pages Settings Preference Options</strong></caption>
<colgroup>
<col width="30%" valign="top" >
<col width="70%" valign="top" >
</colgroup>
<thead>
<tr>
<th id="option"><strong>Option</strong></th>
<th id="description"><strong>Description</strong></th>
</tr>
</thead>
<tbody>
<tr valign="top" >
<td headers="option"><strong>String list Display Mode</strong></td>
<td headers="description">Specifies how values are shown. The two options are:
<ul>
<li><strong>Conjunction</strong> shows common elements only, so if 1st configuration has
value <A, B, C> and 2nd configuration has <B, C, D>, <B, C> will be shown.
<li><strong>Disjunction</strong> shows all existing elements except doubles, so if 1st configuration has
value <A, B, C> and 2nd configuration has <B, C, D>, <A, B, C, D> will be shown.
</ul>
Note that Display mode can be changed directly on each tab which deals with string lists.
Result is immediate: data on the tab is refreshed according to selected mode.</td>
</tr>
<tr valign="top" >
<td headers="option"><strong>String list Write Mode</strong></td>
<td headers="description">Specifies how values are saved. The two options are:
<ul>
<li><strong>Modify mode</strong> adds, changes or removes elements affected by user's actions.
Elements which were not touched by user are left unchanged.<br>
Example: cfg1 has <A, B, C>; cfg2 has <B, C, D>.<br>
User removed B and added F.<br>
Result: cfg1 has <A, C, F>; cfg2 has <C, D, F>.
<li><strong>Replace mode</strong> puts currently visible elements to all configurations.
Old contents will be lost.<br>
Example: cfg1 has <A, B, C>; cfg2 has <B, C, D>.<br>
Visible list depends of Display mode: <B, C> or <A, B, C, D>.<br>
User removed B and added F.<br>
Result: both cfgs will contain either <C, F> or <A, C, D, F> depending of Display mode.
</ul>
Note that Write mode can be changed directly on each tab which deals with string lists.</td>
</tr>
</tbody>
</table>
<p><img src="../images/ngref.gif" ALT="Related reference" width="143" height="21"><br>
<a href="cdt_u_pref_prop_pages.htm">Property Pages Settings preferences</a></p>
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