Doc: Describe configuring C++ code model for a project

Task-number: QTCREATORBUG-30604
Change-Id: I8f3634fe4282ebe3d364f7762fe651ddb872313f
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

doc/qtcreator/src/editors/creator-only/creator-clang-codemodel.qdoc

@@ -124,8 +124,34 @@
     The document outline in the \l{Outline} view is backed by clangd's document
     symbol support, which makes the results more reliable than before.
 
-    \sa {Code Model}, {Clangd}, {Specify clangd settings},
-    {Specify Clang tools settings}, {Use compilation databases}
+    \sa {Configure C++ code model}, {Specify clangd settings},
+    {Specify Clang tools settings}, {Use compilation databases},
+    {Code Model}, {Clangd}
+*/
+
+/*!
+    \page creator-how-to-cpp-code-model.html
+    \previouspage creator-how-tos.html
+
+    \ingroup creator-how-to-configure-editors
+    \ingroup creator-how-to-projects-configure
+
+    \title Configure C++ code model
+
+    The code model offers services such as code completion, syntactic and
+    semantic highlighting, and diagnostics.
+
+    To configure the C++ code model for a project:
+
+    \list 1
+        \li Go to \uicontrol Projects > \uicontrol {Project Settings} >
+            \uicontrol {C++ Code Model}.
+            \image qtcreator-projects-cpp-code-model.webp {C++ Code Model settings}
+        \li Clear \uicontrol {Use global settings}.
+        \li Set \uicontrol {C++ Code Model} settings for the project.
+    \endlist
+
+    \sa {Code Model}
 */
 
 /*!
@@ -138,40 +164,43 @@
 
     \brief Sets global preferences for the code model.
 
-    The Clang code model offers services such as code completion, syntactic and
+    The code model offers services such as code completion, syntactic and
     semantic highlighting, and diagnostics.
 
-    To configure the Clang code model globally:
+    To configure the C++ code model globally, go to \preferences >
+    \uicontrol C++ > \uicontrol {Code Model}.
 
-    \list 1
+    \image qtcreator-preferences-code-model.webp {C++ Code Model preferences}
 
-        \li Select \preferences > \uicontrol C++ >
-            \uicontrol {Code Model}.
-
-            \image qtcreator-preferences-code-model.webp {C++ Code Model preferences}
-
-        \li To instruct the code model to interpret ambiguous header files as C
-            language files if you develop mainly using C, select the
-            \uicontrol {Interpret ambiguous headers as C headers} check box.
-
-        \li To process precompiled headers, deselect the
-            \uicontrol {Ignore precompiled headers} check box.
-
-        \li To use the built-in preprocessor to show the
-            pre-processed source file in the editor, select
-            \uicontrol {Use built-in preprocessor to show pre-processed files}.
+    The following table summarizes the preferences.
 
+    \table
+    \header
+        \li Setting
+        \li Value
+    \row
+        \li \uicontrol {Interpret ambiguous headers as C headers}
+        \li Instructs the code model to interpret ambiguous header files as C
+            language files. Select this checkbox if you develop mainly using C.
+    \row
+        \li \uicontrol {Ignore precompiled headers}
+        \li Clear this checkbox to process precompiled headers.
+    \row
+        \li \uicontrol {Use built-in preprocessor to show pre-processed files}
+        \li Uses the built-in preprocessor to show the
+            pre-processed source file in the editor.
+    \row
+        \li \uicontrol {Do not index files greater than}
         \li To avoid out-of-memory crashes caused by indexing huge source files
             that are typically auto-generated by scripts or code, the size of
-            files to index is limited to 5MB by default. To adjust the limit,
-            edit the value for the \uicontrol {Do not index files greater than}
-            check box. To index all files, deselect the check box.
+            files to index is limited to 5MB by default.
 
-        \li To ignore files that match wildcard patterns, select the
-            \uicontrol {Ignore files} check box and enter each wildcard pattern
-            on a separate line in the field.
-
-    \endlist
+            To index all files, clear the checkbox.
+    \row
+        \li \uicontrol {Ignore files}
+        \li To ignore files that match wildcard patterns, enter each wildcard
+            pattern on a separate line in the field.
+    \endtable
 
     \section1 Inspect preprocessed C++ code
 
@@ -186,7 +215,8 @@
     this action also expands all \c {"#include <foo.h>"} statements to their
     actual contents.
 
-    \sa {Specify clangd settings}, {Clang Code Model}, {Clangd}
+    \sa {Configure C++ code model}, {Specify clangd settings},
+    {Clang Code Model}, {Clangd}
 */
 
 /*!

doc/qtcreator/src/projects/creator-only/creator-projects-settings-overview.qdoc

@@ -85,6 +85,7 @@
                 \li \l{Specify clangd settings}{Clangd}
                 \li \l{Specify Clang tools settings}{Clang Tools}
                 \li \l{Set Copilot preferences}{Copilot}
+                \li \l{Configure C++ code model}{C++ Code Model}
                 \li \l{Specify code style}{C++ Code Style}
                 \li \l{Set C++ file naming preferences}{C++ File Naming}
                 \li \l{Specify dependencies}{Dependencies}