我为一个C 项目设置了一个Doxyfile。我启用了 GENERATE_TREEVIEW 来创建函数摘要，但现在在显示模块页面时，我得到两个侧边栏，内容大多相同，一个在主内容的左边，一个在右边：

如果我设置 GENERATE_TREEVIEW，两个侧边栏就会消失。

如何关闭右侧边栏？

我正在使用Doxygen 1.16。

我的Doxyfile（空值已跳过）：

DOXYFILE_ENCODING      = UTF-8
PROJECT_NAME           = Volksdata
PROJECT_NUMBER         = 1.0b7
PROJECT_BRIEF          = "RDF library"
OUTPUT_DIRECTORY       = docs
CREATE_SUBDIRS         = NO
CREATE_SUBDIRS_LEVEL   = 8
ALLOW_UNICODE_NAMES    = YES
OUTPUT_LANGUAGE        = English
BRIEF_MEMBER_DESC      = YES
REPEAT_BRIEF           = YES
ABBREVIATE_BRIEF       = "The $name class" \
                         "The $name widget" \
                         "The $name file" \
                         is \
                         provides \
                         specifies \
                         contains \
                         represents \
                         a \
                         an \
                         the
ALWAYS_DETAILED_SEC    = NO
INLINE_INHERITED_MEMB  = NO
FULL_PATH_NAMES        = YES
SHORT_NAMES            = NO
JAVADOC_AUTOBRIEF      = NO
JAVADOC_BANNER         = NO
QT_AUTOBRIEF           = NO
MULTILINE_CPP_IS_BRIEF = NO
PYTHON_DOCSTRING       = YES
INHERIT_DOCS           = YES
SEPARATE_MEMBER_PAGES  = NO
TAB_SIZE               = 4
OPTIMIZE_OUTPUT_FOR_C  = YES
OPTIMIZE_OUTPUT_JAVA   = NO
OPTIMIZE_FOR_FORTRAN   = NO
OPTIMIZE_OUTPUT_VHDL   = NO
OPTIMIZE_OUTPUT_SLICE  = NO
MARKDOWN_SUPPORT       = YES
TOC_INCLUDE_HEADINGS   = 5
MARKDOWN_ID_STYLE      = DOXYGEN
AUTOLINK_SUPPORT       = YES
BUILTIN_STL_SUPPORT    = NO
CPP_CLI_SUPPORT        = NO
SIP_SUPPORT            = NO
IDL_PROPERTY_SUPPORT   = YES
DISTRIBUTE_GROUP_DOC   = YES
GROUP_NESTED_COMPOUNDS = YES
SUBGROUPING            = YES
INLINE_GROUPED_CLASSES = NO
INLINE_SIMPLE_STRUCTS  = NO
TYPEDEF_HIDES_STRUCT   = YES
LOOKUP_CACHE_SIZE      = 0
NUM_PROC_THREADS       = 1
TIMESTAMP              = NO
EXTRACT_ALL            = YES
EXTRACT_PRIVATE        = NO
EXTRACT_PRIV_VIRTUAL   = NO
EXTRACT_PACKAGE        = NO
EXTRACT_STATIC         = NO
EXTRACT_LOCAL_CLASSES  = YES
EXTRACT_LOCAL_METHODS  = NO
EXTRACT_ANON_NSPACES   = YES
RESOLVE_UNNAMED_PARAMS = YES
HIDE_UNDOC_MEMBERS     = NO
HIDE_UNDOC_CLASSES     = NO
HIDE_UNDOC_NAMESPACES  = YES
HIDE_FRIEND_COMPOUNDS  = NO
HIDE_IN_BODY_DOCS      = NO
INTERNAL_DOCS          = NO
CASE_SENSE_NAMES       = YES
HIDE_SCOPE_NAMES       = NO
HIDE_COMPOUND_REFERENCE= NO
SHOW_HEADERFILE        = YES
SHOW_INCLUDE_FILES     = YES
SHOW_GROUPED_MEMB_INC  = NO
FORCE_LOCAL_INCLUDES   = NO
INLINE_INFO            = YES
SORT_MEMBER_DOCS       = NO
SORT_BRIEF_DOCS        = NO
SORT_MEMBERS_CTORS_1ST = NO
SORT_GROUP_NAMES       = NO
SORT_BY_SCOPE_NAME     = NO
STRICT_PROTO_MATCHING  = NO
GENERATE_TODOLIST      = YES
GENERATE_TESTLIST      = YES
GENERATE_BUGLIST       = YES
GENERATE_DEPRECATEDLIST= YES
MAX_INITIALIZER_LINES  = 30
SHOW_USED_FILES        = YES
SHOW_FILES             = YES
SHOW_NAMESPACES        = YES
QUIET                  = NO
WARNINGS               = YES
WARN_IF_UNDOCUMENTED   = YES
WARN_IF_DOC_ERROR      = YES
WARN_IF_INCOMPLETE_DOC = YES
WARN_NO_PARAMDOC       = NO
WARN_IF_UNDOC_ENUM_VAL = NO
WARN_LAYOUT_FILE       = YES
WARN_AS_ERROR          = NO
WARN_FORMAT            = "$file:$line: $text"
WARN_LINE_FORMAT       = "at line $line of file $file"
INPUT                  = README.md \
                         src \
                         include
INPUT_ENCODING         = UTF-8
FILE_PATTERNS          = *.c \
                         *.cc \
                         *.cxx \
                         *.cpp \
                         *.c++ \
                         *.h \
                         *.hh \
                         *.hxx \
                         *.hpp \
                         *.h++ \
                         *.m \
                         *.markdown \
                         *.md \
                         *.py
RECURSIVE              = YES
EXCLUDE_SYMLINKS       = NO
EXCLUDE_PATTERNS       = *_dbg.*
EXAMPLE_PATTERNS       = *
EXAMPLE_RECURSIVE      = NO
FILTER_SOURCE_FILES    = NO
USE_MDFILE_AS_MAINPAGE = README.md
IMPLICIT_DIR_DOCS      = YES
FORTRAN_COMMENT_AFTER  = 72
SOURCE_BROWSER         = YES
INLINE_SOURCES         = NO
STRIP_CODE_COMMENTS    = YES
REFERENCED_BY_RELATION = NO
REFERENCES_RELATION    = NO
REFERENCES_LINK_SOURCE = YES
SOURCE_TOOLTIPS        = YES
USE_HTAGS              = NO
VERBATIM_HEADERS       = YES
CLANG_ASSISTED_PARSING = NO
CLANG_ADD_INC_PATHS    = YES
ALPHABETICAL_INDEX     = YES
GENERATE_HTML          = YES
HTML_OUTPUT            = html
HTML_FILE_EXTENSION    = .html
HTML_COLORSTYLE        = AUTO_DARK
HTML_COLORSTYLE_HUE    = 220
HTML_COLORSTYLE_SAT    = 100
HTML_COLORSTYLE_GAMMA  = 80
HTML_DYNAMIC_MENUS     = YES
HTML_DYNAMIC_SECTIONS  = NO
HTML_CODE_FOLDING      = YES
HTML_COPY_CLIPBOARD    = YES
HTML_INDEX_NUM_ENTRIES = 100
GENERATE_DOCSET        = NO
DOCSET_FEEDNAME        = "Doxygen generated docs"
DOCSET_BUNDLE_ID       = org.doxygen.Project
DOCSET_PUBLISHER_ID    = org.doxygen.Publisher
DOCSET_PUBLISHER_NAME  = Publisher
GENERATE_HTMLHELP      = NO
GENERATE_CHI           = NO
BINARY_TOC             = NO
TOC_EXPAND             = NO
GENERATE_QHP           = NO
QHP_NAMESPACE          = org.doxygen.Project
QHP_VIRTUAL_FOLDER     = doc
GENERATE_ECLIPSEHELP   = NO
ECLIPSE_DOC_ID         = org.doxygen.Project
DISABLE_INDEX          = NO
GENERATE_TREEVIEW      = YES
FULL_SIDEBAR           = YES
ENUM_VALUES_PER_LINE   = 4
SHOW_ENUM_VALUES       = NO
TREEVIEW_WIDTH         = 250
EXT_LINKS_IN_WINDOW    = NO
OBFUSCATE_EMAILS       = YES
HTML_FORMULA_FORMAT    = png
FORMULA_FONTSIZE       = 10
USE_MATHJAX            = NO
MATHJAX_VERSION        = MathJax_2
MATHJAX_FORMAT         = HTML-CSS
SEARCHENGINE           = YES
SERVER_BASED_SEARCH    = NO
EXTERNAL_SEARCH        = NO
SEARCHDATA_FILE        = searchdata.xml
GENERATE_LATEX         = NO
LATEX_OUTPUT           = latex
MAKEINDEX_CMD_NAME     = makeindex
LATEX_MAKEINDEX_CMD    = makeindex
COMPACT_LATEX          = NO
PAPER_TYPE             = a4
PDF_HYPERLINKS         = YES
USE_PDFLATEX           = YES
LATEX_BATCHMODE        = NO
LATEX_HIDE_INDICES     = NO
LATEX_BIB_STYLE        = plain
GENERATE_RTF           = NO
RTF_OUTPUT             = rtf
COMPACT_RTF            = NO
RTF_HYPERLINKS         = NO
GENERATE_MAN           = NO
MAN_OUTPUT             = man
MAN_EXTENSION          = .3
MAN_LINKS              = NO
GENERATE_XML           = NO
XML_OUTPUT             = xml
XML_PROGRAMLISTING     = YES
XML_NS_MEMB_FILE_SCOPE = NO
GENERATE_DOCBOOK       = NO
DOCBOOK_OUTPUT         = docbook
GENERATE_AUTOGEN_DEF   = NO
GENERATE_SQLITE3       = NO
SQLITE3_OUTPUT         = sqlite3
SQLITE3_RECREATE_DB    = YES
GENERATE_PERLMOD       = NO
PERLMOD_LATEX          = NO
PERLMOD_PRETTY         = YES
ENABLE_PREPROCESSING   = YES
MACRO_EXPANSION        = NO
EXPAND_ONLY_PREDEF     = NO
SEARCH_INCLUDES        = YES
SKIP_FUNCTION_MACROS   = YES
ALLEXTERNALS           = NO
EXTERNAL_GROUPS        = YES
EXTERNAL_PAGES         = YES
HIDE_UNDOC_RELATIONS   = YES
HAVE_DOT               = YES
DOT_NUM_THREADS        = 0
DOT_COMMON_ATTR        = "fontname=Helvetica,fontsize=10"
DOT_EDGE_ATTR          = "labelfontname=Helvetica,labelfontsize=10"
DOT_NODE_ATTR          = "shape=box,height=0.2,width=0.4"
CLASS_GRAPH            = YES
COLLABORATION_GRAPH    = YES
GROUP_GRAPHS           = YES
UML_LOOK               = NO
UML_LIMIT_NUM_FIELDS   = 10
DOT_UML_DETAILS        = NO
DOT_WRAP_THRESHOLD     = 17
TEMPLATE_RELATIONS     = NO
INCLUDE_GRAPH          = YES
INCLUDED_BY_GRAPH      = YES
CALL_GRAPH             = NO
CALLER_GRAPH           = NO
GRAPHICAL_HIERARCHY    = YES
DIRECTORY_GRAPH        = YES
DIR_GRAPH_MAX_DEPTH    = 1
DOT_IMAGE_FORMAT       = png
INTERACTIVE_SVG        = NO
DOT_GRAPH_MAX_NODES    = 50
MAX_DOT_GRAPH_DEPTH    = 0
DOT_MULTI_TARGETS      = NO
GENERATE_LEGEND        = YES
DOT_CLEANUP            = YES

解决方案

通过doxygen设置 PAGE_OUTLINE_PANEL 可以控制 page outline panel（这是在doxygen 1.14.0版本中引入的）。

文档中有说明（例如，请参见 https://www.doxygen.nl/manual/config.html#cfg_page_outline_panel）：

PAGE_OUTLINE_PANEL
    When GENERATE_TREEVIEW is set to YES, the PAGE_OUTLINE_PANEL option determines if an additional
    navigation panel is shown at the right hand side of the screen, displaying an outline of the contents of
    the main page, similar to e.g. https://developer.android.com/reference

    If GENERATE_TREEVIEW is set to NO, this option has no effect.

    The default value is: YES.

    This tag requires that the tag GENERATE_HTML is set to YES.