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// Copyright (C) 2023 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only
/*!
\page creator-preferences-cpp-code-style.html
\previouspage creator-reference.html
\ingroup creator-reference-preferences-cpp
\title C++ Code Style
\brief Set global code style for C++ files.
\QC uses the Clang \l{https://clang.llvm.org/docs/LibFormat.html}{LibFormat}
library to automatically format and indent C++ code. It enforces a coding
style for a project or the whole organization.
To specify global indentation settings for the C++ editor:
\list 1
\li Select \preferences > \uicontrol {C++}.
\image qtcreator-code-style-clang-format-global.webp {Code Style preferences}
\li In \uicontrol {Formatting mode}, select:
\list
\li \uicontrol {Indenting Only} to only indent code.
\li \uicontrol {Full Formatting} to use the \key {Ctrl+I}
keyboard shortcut to format code instead of indenting.
\li \uicontrol Disable to turn off ClangFormat.
\endlist
\li To apply the formatting while you type, select
\uicontrol {Format while typing}.
\li To apply the formatting to the edited code when you save the file,
select \uicontrol {Format edited code on file save}.
\li To change the ClangFormat style globally for all projects,
select \uicontrol {Override ClangFormat configuration file}.
\li In the \uicontrol {Current settings} field, select the settings to
modify and click \uicontrol Copy.
\li Give a name to the settings and click \uicontrol OK.
\li Click \uicontrol Edit to set
\l{https://clang.llvm.org/docs/ClangFormatStyleOptions.html}
{ClangFormat Style Options}.
\endlist
In the other tabs, you can specify how to:
\list
\li Interpret the \key Tab and \key Backspace key presses.
\li Indent the contents of classes, functions, blocks, and namespaces.
\li Indent braces in classes, namespaces, enums, functions, and blocks.
\li Control switch statements and their contents.
\li Align continuation lines.
\li Bind pointers (*) and references (&) in types and declarations to
identifiers, type names, or left or right \c const or \c volatile
keywords.
\li Name getter functions.
\endlist
Use the live preview to see how the preferences change the indentation.
\section1 Specifying Settings for Content
You can indent public, protected, and private statements and declarations
related to them within classes.
You can also indent statements within functions and blocks and declarations
within namespaces.
\image qtcreator-code-style-content.png {Content preferences}
\section1 Specifying Settings for Braces
You can indent class, namespace, enum and function declarations and code
blocks.
\image qtcreator-code-style-braces.png {Braces preferences}
\section1 Specifying Settings for Switch Statements
You can indent case or default statements, or statements or blocks related
to them within switch statements.
\image qtcreator-code-style-switch.png {Switch preferences}
\section1 Specifying Alignment
To align continuation lines to tokens after assignments, such as \c = or
\c +=, select the \uicontrol {Align after assignments} check box. You can
specify additional settings for aligning continuation lines in the
\uicontrol General tab.
You can also add spaces to conditional statements, so that they are not
aligned with the following line. Usually, this only affects \c if
statements.
\image qtcreator-code-style-alignment.png {Alignment preferences}
\section1 Binding Pointers and References
To bind pointers (\c *) and references (\c &) in types and declarations to
identifiers, type names, or left or right \c const or \c volatile keywords,
select the check boxes in the \uicontrol {Pointers and References} tab.
The \c * and \c & characters are automatically bound to identifiers of
pointers to functions and pointers to arrays.
\image qtcreator-pointers-references.png {Pointers and References preferences}
\section1 Creating Project-Specific ClangFormat Files
To override the \c {.clang-format} file for a particular project, create a
copy of the built-in style and edit its settings by selecting
\uicontrol Projects > \uicontrol {Project Settings} >
\uicontrol {Code Style} > \uicontrol Copy > \uicontrol Edit >
\uicontrol {ClangFormat} >
\uicontrol {Override ClangFormat configuration file}.
\section1 Creating ClangFormat Files from Command Line
You can create \c {.clang-format} files that have the configuration
options of a certain predefined style from the command line. For example,
to create a format file for the LLVM style, enter the following command:
\badcode
clang-format -style=llvm -dump-config > .clang-format
\endcode
\sa {Indent text or code}, {Behavior}, {Qt Quick Code Style}, {Nim}
*/
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