wxConfigBase class defines the basic interface of all config classes. It can
not be used by itself (it is an abstract base class) and you will always use one
-of its derivations: wxIniConfig, wxFileConfig, wxRegConfig or any other.
+of its derivations: \helpref{wxFileConfig}{wxfileconfig},
+wxRegConfig or any other.
However, usually you don't even need to know the precise nature of the class
you're working with but you would just use the wxConfigBase methods. This
allows you to write the same code regardless of whether you're working with
the registry under Win32 or text-based config files under Unix (or even
Windows 3.1 .INI files if you're really unlucky). To make writing the portable
-code even easier, wxWindows provides a typedef wxConfig
+code even easier, wxWidgets provides a typedef wxConfig
which is mapped onto the native wxConfigBase implementation on the given
-platform: i.e. wxRegConfig under Win32, wxIniConfig under Win16 and
+platform: i.e. wxRegConfig under Win32 and
wxFileConfig otherwise.
See \helpref{config overview}{wxconfigoverview} for the descriptions of all
\wxheading{Derived from}
-No base class
+\helpref{wxObject}{wxobject}
\wxheading{Include files}
-<wx/config.h> (to let wxWindows choose a wxConfig class for your platform)\\
+<wx/config.h> (to let wxWidgets choose a wxConfig class for your platform)\\
<wx/confbase.h> (base config class)\\
-<wx/fileconf.h> (wxFileconfig class)\\
-<wx/msw/regconf.h> (wxRegConfig class)\\
-<wx/msw/iniconf.h> (wxIniConfig class)
+<wx/fileconf.h> (wxFileConfig class)\\
+<wx/msw/regconf.h> (wxRegConfig class)
\wxheading{Example}
\latexignore{\rtfignore{\wxheading{Function groups}}}
+
\membersection{Static functions}\label{wxconfigstaticfunctions}
These functions deal with the "default" config object. Although its usage is
consuming operation). In this case, you may create this global config object
in the very start of the program and {\it Set()} it as the default. Then, from
anywhere in your program, you may access it using the {\it Get()} function.
-Note that you must delete this object (usually in \helpref{wxApp::OnExit}{wxapponexit})
-in order to avoid memory leaks, wxWindows won't do it automatically.
+This global wxConfig object will be deleted by wxWidgets automatically if it
+exists. Note that this implies that if you do delete this object yourself
+(usually in \helpref{wxApp::OnExit}{wxapponexit}) you must use {\it Set(NULL)}
+to prevent wxWidgets from deleting it the second time.
As it happens, you may even further simplify the procedure described above:
you may forget about calling {\it Set()}. When {\it Get()} is called and there
is no current object, it will create one using {\it Create()} function. To
disable this behaviour {\it DontCreateOnDemand()} is provided.
-{\bf Note:} You should use either {\it Set()} or {\it Get()} because wxWindows
+{\bf Note:} You should use either {\it Set()} or {\it Get()} because wxWidgets
library itself would take advantage of it and could save various information
in it. For example \helpref{wxFontMapper}{wxfontmapper} or Unix version
-of \helpref{wxFileDialog}{wxfiledialog} have ability to use wxConfig class.
+of \helpref{wxFileDialog}{wxfiledialog} have the ability to use wxConfig class.
\helpref{Set}{wxconfigbaseset}\\
\helpref{Get}{wxconfigbaseget}\\
\helpref{Create}{wxconfigbasecreate}\\
\helpref{DontCreateOnDemand}{wxconfigbasedontcreateondemand}
-\membersection{Constructor and destructor}
+
+\membersection{Constructor and destructor}\label{congigconstructordestructor}
\helpref{wxConfigBase}{wxconfigbasector}\\
\helpref{\destruct{wxConfigBase}}{wxconfigbasedtor}
-\membersection{Path management}
+
+\membersection{Path management}\label{configpathmanagement}
As explained in \helpref{config overview}{wxconfigoverview}, the config classes
support a file system-like hierarchy of keys (files) and groups (directories).
\helpref{SetPath}{wxconfigbasesetpath}\\
\helpref{GetPath}{wxconfigbasegetpath}
-\membersection{Enumeration}
+
+\membersection{Enumeration}\label{configenumeration}
The functions in this section allow to enumerate all entries and groups in the
-config file. All functions here return false when there are no more items.
+config file. All functions here return \false when there are no more items.
You must pass the same index to GetNext and GetFirst (don't modify it).
Please note that it is {\bf not} the index of the current item (you will have
Having said all this, enumerating the config entries/groups is very simple:
\begin{verbatim}
+ wxConfigBase *config = ...;
wxArrayString aNames;
// enumeration variables
\helpref{GetNumberOfEntries}{wxconfigbasegetnumberofentries}\\
\helpref{GetNumberOfGroups}{wxconfigbasegetnumberofgroups}
-\membersection{Tests of existence}
+
+\membersection{Tests of existence}\label{configtestsofexistence}
\helpref{HasGroup}{wxconfigbasehasgroup}\\
\helpref{HasEntry}{wxconfigbasehasentry}\\
\helpref{Exists}{wxconfigbaseexists}\\
\helpref{GetEntryType}{wxconfigbasegetentrytype}
-\membersection{Miscellaneous functions}
+
+\membersection{Miscellaneous functions}\label{configmiscellaneous}
\helpref{GetAppName}{wxconfigbasegetappname}\\
\helpref{GetVendorName}{wxconfigbasegetvendorname}\\
\helpref{SetUmask}{wxfileconfigsetumask}
-\membersection{Key access}
+
+\membersection{Key access}\label{configkeyaccess}
These function are the core of wxConfigBase class: they allow you to read and
write config file data. All {\it Read} function take a default value which
\helpref{Write}{wxconfigbasewrite}\\
\helpref{Flush}{wxconfigbaseflush}
-\membersection{Rename entries/groups}
+
+\membersection{Rename entries/groups}\label{configrenaming}
The functions in this section allow to rename entries or subgroups of the
-current group. They will return false on error. typically because either the
+current group. They will return \false on error. typically because either the
entry/group with the original name doesn't exist, because the entry/group with
the new name already exists or because the function is not supported in this
wxConfig implementation.
\helpref{RenameEntry}{wxconfigbaserenameentry}\\
\helpref{RenameGroup}{wxconfigbaserenamegroup}
-\membersection{Delete entries/groups}
+
+\membersection{Delete entries/groups}\label{configdeleting}
The functions in this section delete entries and/or groups of entries from the
config file. {\it DeleteAll()} is especially useful if you want to erase all
\helpref{DeleteGroup}{wxconfigbasedeletegroup}\\
\helpref{DeleteAll}{wxconfigbasedeleteall}
-\membersection{Options}
+
+\membersection{Options}\label{configoptions}
Some aspects of wxConfigBase behaviour can be changed during run-time. The
first of them is the expansion of environment variables in the string values
}}
+
\membersection{wxConfigBase::wxConfigBase}\label{wxconfigbasector}
\func{}{wxConfigBase}{\param{const wxString\& }{appName = wxEmptyString},
\param{const wxString\& }{localFilename = wxEmptyString},
\param{const wxString\& }{globalFilename = wxEmptyString},
\param{long}{ style = 0},
- \param{wxMBConv\&}{ conv = wxConvUTF8}}
+ \param{const wxMBConv\&}{ conv = wxConvAuto()}}
This is the default and only constructor of the wxConfigBase class, and
derived classes.
\docparam{style}{Can be one of wxCONFIG\_USE\_LOCAL\_FILE and
wxCONFIG\_USE\_GLOBAL\_FILE. The style interpretation depends on the config
-class and is ignored by some. For wxFileConfig, these styles determine whether
-a local or global config file is created or used. If the flag is present but
-the parameter is empty, the parameter will be set to a default. If the
-parameter is present but the style flag not, the relevant flag will be added
-to the style. For wxFileConfig you can also add wxCONFIG\_USE\_RELATIVE\_PATH
-by logically or'ing it to either of the \_FILE options to tell wxFileConfig to
-use relative instead of absolute paths. For wxFileConfig, you can also
-add wxCONFIG\_USE\_NO\_ESCAPE\_CHARACTERS which will turn off character
-escaping for the values of entries stored in the config file: for example
-a {\it foo} key with some backslash characters will be stored as {\tt foo=C:$\backslash$mydir} instead
-of the usual storage of {\tt foo=C:$\backslash\backslash$mydir}.
+class and is ignored by some implementations. For wxFileConfig, these styles
+determine whether a local or global config file is created or used: if
+wxCONFIG\_USE\_GLOBAL\_FILE is used, then settings are read from the global
+config file and if wxCONFIG\_USE\_LOCAL\_FILE is used, settings are read from
+and written to local config file (if they are both set, global file is read
+first, then local file, overwriting global settings). If the
+flag is present but the parameter is empty, the parameter will be set to a
+default. If the parameter is present but the style flag not, the relevant flag
+will be added to the style. For wxRegConfig, thie GLOBAL flag refers to HKLM
+key while LOCAL one is for the usual HKCU one.
+
+For wxFileConfig you can also add wxCONFIG\_USE\_RELATIVE\_PATH by logically
+or'ing it to either of the \_FILE options to tell wxFileConfig to use relative
+instead of absolute paths.
+
+On non-VMS Unix systems, the default local configuration file is \tt{~/.appname}.
+However, this path may be also used as user data directory
+(see \helpref{wxStandardPaths::GetUserDataDir}{wxstandardpathsgetuserdatadir}) if
+the application has several data files. In this case wxCONFIG\_USE\_SUBDIR
+flag, which changes the default local configuration file to \tt{~/.appname/appname}
+should be used. Notice that this flag is ignored if \textit{localFilename} is
+provided. \newsince{2.8.2}
+
+For wxFileConfig, you can also add wxCONFIG\_USE\_NO\_ESCAPE\_CHARACTERS which
+will turn off character escaping for the values of entries stored in the config
+file: for example a {\it foo} key with some backslash characters will be stored
+as {\tt foo=C:$\backslash$mydir} instead of the usual storage of {\tt
+foo=C:$\backslash\backslash$mydir}.
The wxCONFIG\_USE\_NO\_ESCAPE\_CHARACTERS style can be helpful if your config
-file must be read or written to by a non-wxWindows program (which might not
+file must be read or written to by a non-wxWidgets program (which might not
understand the escape characters). Note, however, that if
wxCONFIG\_USE\_NO\_ESCAPE\_CHARACTERS style is used, it is is now
your application's responsibility to ensure that there is no newline or
other illegal characters in a value, before writing that value to the file.}
\docparam{conv}{This parameter is only used by wxFileConfig when compiled
-in Unicode mode. It specifies the encoding in what the configuration file
+in Unicode mode. It specifies the encoding in which the configuration file
is written.}
By default, environment variable expansion is on and recording defaults is
off.
+
\membersection{wxConfigBase::\destruct{wxConfigBase}}\label{wxconfigbasedtor}
\func{}{\destruct{wxConfigBase}}{\void}
Empty but ensures that dtor of all derived classes is virtual.
+
\membersection{wxConfigBase::Create}\label{wxconfigbasecreate}
\func{static wxConfigBase *}{Create}{\void}
near the definition of wxCONFIG\_WIN32\_NATIVE for details. It returns the
created object and also sets it as the current one.
+
\membersection{wxConfigBase::DontCreateOnDemand}\label{wxconfigbasedontcreateondemand}
\func{void}{DontCreateOnDemand}{\void}
Calling this function will prevent {\it Get()} from automatically creating a
new config object if the current one is NULL. It might be useful to call it
-near the program end to prevent new config object "accidental" creation.
+near the program end to prevent "accidental" creation of a new config object.
+
\membersection{wxConfigBase::DeleteAll}\label{wxconfigbasedeleteall}
\func{bool}{DeleteAll}{\void}
Delete the whole underlying object (disk file, registry key, ...). Primarly
-for use by desinstallation routine.
+for use by uninstallation routine.
+
\membersection{wxConfigBase::DeleteEntry}\label{wxconfigbasedeleteentry}
Deletes the specified entry and the group it belongs to if it was the last key
in it and the second parameter is true.
+
\membersection{wxConfigBase::DeleteGroup}\label{wxconfigbasedeletegroup}
\func{bool}{DeleteGroup}{\param{const wxString\& }{ key}}
-Delete the group (with all subgroups)
+Delete the group (with all subgroups). If the current path is under the group
+being deleted it is changed to its deepest still existing component. E.g. if
+the current path is \texttt{/A/B/C/D} and the group \texttt{C} is deleted the
+path becomes \texttt{/A/B}.
+
\membersection{wxConfigBase::Exists}\label{wxconfigbaseexists}
\constfunc{bool}{Exists}{\param{wxString\& }{strName}}
-returns true if either a group or an entry with a given name exists
+returns \true if either a group or an entry with a given name exists
+
\membersection{wxConfigBase::Flush}\label{wxconfigbaseflush}
permanently writes all changes (otherwise, they're only written from object's
destructor)
+
\membersection{wxConfigBase::Get}\label{wxconfigbaseget}
\func{static wxConfigBase *}{Get}{\param{bool }{CreateOnDemand = true}}
{\it CreateOnDemand} is true, creates one
(using {\it Create}) unless DontCreateOnDemand was called previously.
+
\membersection{wxConfigBase::GetAppName}\label{wxconfigbasegetappname}
\constfunc{wxString}{GetAppName}{\void}
Returns the application name.
+
\membersection{wxConfigBase::GetEntryType}\label{wxconfigbasegetentrytype}
\constfunc{enum wxConfigBase::EntryType}{GetEntryType}{\param{const wxString\& }{name}}
\begin{verbatim}
enum EntryType
{
- Unknown,
- String,
- Boolean,
- Integer,
- Float
+ Type_Unknown,
+ Type_String,
+ Type_Boolean,
+ Type_Integer,
+ Type_Float
};
\end{verbatim}
+
\membersection{wxConfigBase::GetFirstGroup}\label{wxconfigbasegetfirstgroup}
\constfunc{bool}{GetFirstGroup}{\param{wxString\& }{str}, \param{long\&}{ index}}
\perlnote{In wxPerl this method takes no arguments and returns a 3-element
list {\tt ( continue, str, index )}.}
+
\membersection{wxConfigBase::GetFirstEntry}\label{wxconfigbasegetfirstentry}
\constfunc{bool}{GetFirstEntry}{\param{wxString\& }{str}, \param{long\&}{ index}}
\perlnote{In wxPerl this method takes no arguments and returns a 3-element
list {\tt ( continue, str, index )}.}
+
\membersection{wxConfigBase::GetNextGroup}\label{wxconfigbasegetnextgroup}
\constfunc{bool}{GetNextGroup}{\param{wxString\& }{str}, \param{long\&}{ index}}
\perlnote{In wxPerl this method only takes the {\tt index} parameter
and returns a 3-element list {\tt ( continue, str, index )}.}
+
\membersection{wxConfigBase::GetNextEntry}\label{wxconfigbasegetnextentry}
\constfunc{bool}{GetNextEntry}{\param{wxString\& }{str}, \param{long\&}{ index}}
\perlnote{In wxPerl this method only takes the {\tt index} parameter
and returns a 3-element list {\tt ( continue, str, index )}.}
+
\membersection{wxConfigBase::GetNumberOfEntries}\label{wxconfigbasegetnumberofentries}
\constfunc{uint }{GetNumberOfEntries}{\param{bool }{bRecursive = false}}
+
\membersection{wxConfigBase::GetNumberOfGroups}\label{wxconfigbasegetnumberofgroups}
\constfunc{uint}{GetNumberOfGroups}{\param{bool }{bRecursive = false}}
Get number of entries/subgroups in the current group, with or without its
subgroups.
+
\membersection{wxConfigBase::GetPath}\label{wxconfigbasegetpath}
\constfunc{const wxString\&}{GetPath}{\void}
Retrieve the current path (always as absolute path).
+
\membersection{wxConfigBase::GetVendorName}\label{wxconfigbasegetvendorname}
\constfunc{wxString}{GetVendorName}{\void}
Returns the vendor name.
+
\membersection{wxConfigBase::HasEntry}\label{wxconfigbasehasentry}
\constfunc{bool}{HasEntry}{\param{wxString\& }{strName}}
-returns true if the entry by this name exists
+returns \true if the entry by this name exists
+
\membersection{wxConfigBase::HasGroup}\label{wxconfigbasehasgroup}
\constfunc{bool}{HasGroup}{\param{const wxString\& }{strName}}
-returns true if the group by this name exists
+returns \true if the group by this name exists
+
\membersection{wxConfigBase::IsExpandingEnvVars}\label{wxconfigbaseisexpandingenvvars}
\constfunc{bool}{IsExpandingEnvVars}{\void}
-Returns true if we are expanding environment variables in key values.
+Returns \true if we are expanding environment variables in key values.
+
\membersection{wxConfigBase::IsRecordingDefaults}\label{wxconfigbaseisrecordingdefaults}
\constfunc{bool}{IsRecordingDefaults}{\void}
-Returns true if we are writing defaults back to the config file.
+Returns \true if we are writing defaults back to the config file.
+
\membersection{wxConfigBase::Read}\label{wxconfigbaseread}
\constfunc{bool}{Read}{\param{const wxString\& }{key}, \param{wxString*}{ str}}
-Read a string from the key, returning true if the value was read. If the key
+Read a string from the key, returning \true if the value was read. If the key
was not found, {\it str} is not changed.
\constfunc{bool}{Read}{\param{const wxString\& }{key}, \param{wxString*}{ str}, \param{const wxString\& }{defaultVal}}
Read a string from the key. The default value is returned if the key was not
found.
-Returns true if value was really read, false if the default was used.
+Returns \true if value was really read, \false if the default was used.
\constfunc{wxString}{Read}{\param{const wxString\& }{key}, \param{const
wxString\& }{defaultVal}}
\constfunc{bool}{Read}{\param{const wxString\& }{ key}, \param{long*}{ l}}
-Reads a long value, returning true if the value was found. If the value was
+Reads a long value, returning \true if the value was found. If the value was
not found, {\it l} is not changed.
\constfunc{bool}{Read}{\param{const wxString\& }{ key}, \param{long*}{ l},
\param{long}{ defaultVal}}
-Reads a long value, returning true if the value was found. If the value was
+Reads a long value, returning \true if the value was found. If the value was
not found, {\it defaultVal} is used instead.
\constfunc{long }{Read}{\param{const wxString\& }{key}, \param{long}{ defaultVal}}
\constfunc{bool}{Read}{\param{const wxString\& }{ key}, \param{double*}{ d}}
-Reads a double value, returning true if the value was found. If the value was
+Reads a double value, returning \true if the value was found. If the value was
not found, {\it d} is not changed.
\constfunc{bool}{Read}{\param{const wxString\& }{ key}, \param{double*}{ d},
\param{double}{ defaultVal}}
-Reads a double value, returning true if the value was found. If the value was
+Reads a double value, returning \true if the value was found. If the value was
not found, {\it defaultVal} is used instead.
\constfunc{bool}{Read}{\param{const wxString\& }{ key}, \param{bool*}{ b}}
-Reads a bool value, returning true if the value was found. If the value was
+Reads a bool value, returning \true if the value was found. If the value was
not found, {\it b} is not changed.
\constfunc{bool}{Read}{\param{const wxString\& }{ key}, \param{bool*}{ d},
\param{bool}{ defaultVal}}
-Reads a bool value, returning true if the value was found. If the value was
+Reads a bool value, returning \true if the value was found. If the value was
not found, {\it defaultVal} is used instead.
\pythonnote{In place of a single overloaded method name, wxPython
\end{twocollist}
}}
+
\membersection{wxConfigBase::RenameEntry}\label{wxconfigbaserenameentry}
\func{bool}{RenameEntry}{\param{const wxString\& }{ oldName}, \param{const wxString\& }{ newName}}
the new one) shouldn't contain backslashes, i.e. only simple names and not
arbitrary paths are accepted by this function.
-Returns false if the {\it oldName} doesn't exist or if {\it newName} already
+Returns \false if {\it oldName} doesn't exist or if {\it newName} already
exists.
+
\membersection{wxConfigBase::RenameGroup}\label{wxconfigbaserenamegroup}
\func{bool}{RenameGroup}{\param{const wxString\& }{ oldName}, \param{const wxString\& }{ newName}}
the new one) shouldn't contain backslashes, i.e. only simple names and not
arbitrary paths are accepted by this function.
-Returns false if the {\it oldName} doesn't exist or if {\it newName} already
+Returns \false if {\it oldName} doesn't exist or if {\it newName} already
exists.
+
\membersection{wxConfigBase::Set}\label{wxconfigbaseset}
\func{static wxConfigBase *}{Set}{\param{wxConfigBase *}{pConfig}}
Sets the config object as the current one, returns the pointer to the previous
current object (both the parameter and returned value may be NULL)
+
\membersection{wxConfigBase::SetExpandEnvVars}\label{wxconfigbasesetexpandenvvars}
\func{void}{SetExpandEnvVars }{\param{bool }{bDoIt = true}}
Determine whether we wish to expand environment variables in key values.
+
\membersection{wxConfigBase::SetPath}\label{wxconfigbasesetpath}
\func{void}{SetPath}{\param{const wxString\& }{strPath}}
Set current path: if the first character is '/', it is the absolute path,
-otherwise it is a relative path. '..' is supported. If the strPath doesn't
+otherwise it is a relative path. '..' is supported. If strPath doesn't
exist it is created.
+
\membersection{wxConfigBase::SetRecordDefaults}\label{wxconfigbasesetrecorddefaults}
\func{void}{SetRecordDefaults}{\param{bool }{bDoIt = true}}
Sets whether defaults are recorded to the config file whenever an attempt to
-read read the value which is not present in it is done.
+read the value which is not present in it is done.
If on (default is off) all default values for the settings used by the program
are written back to the config file. This allows the user to see what config
options may be changed and is probably useful only for wxFileConfig.
-\membersection{wxConfigBase::SetUmask}\label{wxfileconfigsetumask}
-
-\func{void}{SetUmask}{\param{int }{mode}}
-
-{\bf NB:} this function is not in the base wxConfigBase class but is only
-implemented in wxFileConfig. Moreover, this function is Unix-specific and
-doesn't do anything on other platforms.
-
-SetUmask() allows to set the mode to be used for the config file creation.
-For example, to create a config file which is not readable by other users
-(useful if it stores some sensitive information, such as passwords), you
-should do {\tt SetUmask(0077)}.
\membersection{wxConfigBase::Write}\label{wxconfigbasewrite}
\func{bool}{Write}{\param{const wxString\& }{ key}, \param{bool}{ value}}
-These functions write the specified value to the config file and return true
-on success.
+These functions write the specified value to the config file and return \true on success.
\pythonnote{In place of a single overloaded method name, wxPython
implements the following methods:\par
\twocolitem{{\bf WriteBool(key, value)}}{Writes a boolean}
\end{twocollist}
}}
+
projects / wxWidgets.git / blobdiff