carbidecpp22devenv/configuration/org.eclipse.osgi/bundles/309/1/.cp/reference/cdt_u_pref_multi_cfg.htm
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<h1>Multi-Configuration Edit preferences</h1>
<p>Since CDT 5.0, user is able to edit properties for
multiple project configurations simultaneously.</p>
<p>Either all configuations or some of them can be selected.</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>
<dl>
<dt>String list Display Mode</dt>
<dd>Specifies how values will be shown.<br>
There are 2 options: conjunction or disjunction.
<ul>
<li><b>Conjunction</b> 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><b>Disjunction</b> 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 refereshed according to selected mode.<br>
</dd>
<dt>String list Write Mode</dt>
<dd>Specifies how values will be saved.<br>
There are 2 options: modify or replace.
<ul>
<li><b>Modify mode</b> 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><b>Replace mode</b> 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.<br>
</dd>
<dt>Restore Defaults</dt>
<dd>Sets all parameters to default values</dd>
<dt>Apply</dt>
<dd>Saves current settings.</dd>
</dl>
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