X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/7ad56d275d114ab3f2d34c9dcc56b7012c4829e9..097119648b492237f16acdf484eff8900c7c94d2:/docs/latex/wx/config.tex?ds=inline

diff --git a/docs/latex/wx/config.tex b/docs/latex/wx/config.tex
index 92a853dab8..83c1e01824 100644
--- a/docs/latex/wx/config.tex
+++ b/docs/latex/wx/config.tex
@@ -23,7 +23,7 @@ so please have a \helpref{look at them.}{wxconfigstaticfunctions}
 
 \wxheading{Derived from}
 
-No base class
+\helpref{wxObject}{wxobject}
 
 \wxheading{Include files}
 
@@ -53,7 +53,7 @@ Here is how you would typically use this class:
 
   // another example: using default values and the full path instead of just
   // key name: if the key is not found , the value 17 is returned
-  long value = config->Read("/LastRun/CalculatedValues/MaxValue", 17);
+  long value = config->ReadLong("/LastRun/CalculatedValues/MaxValue", 17);
   ...
   ...
   ...
@@ -88,8 +88,10 @@ one (especially because creating a wxFileConfig object might be a time
 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, wxWidgets 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
@@ -99,7 +101,7 @@ disable this behaviour {\it DontCreateOnDemand()} is provided.
 {\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}\\
@@ -139,10 +141,10 @@ sensible!):
   conf->Write("../GroupEntry", 2);
   conf->SetPath("..");
 
-  wxASSERT( conf->Read("Subgroup/SubgroupEntry", 0l) == 3 );
+  wxASSERT( conf->ReadLong("Subgroup/SubgroupEntry", 0) == 3 );
 
   // use absolute path: it is allowed, too
-  wxASSERT( conf->Read("/RootEntry", 0l) == 1 );
+  wxASSERT( conf->ReadLong("/RootEntry", 0) == 1 );
 \end{verbatim}
 
 {\it Warning}: it is probably a good idea to always restore the path to its
@@ -172,7 +174,7 @@ doesn't save and restore the path):
     foo(config);
 
     // we're reading "/Foo/Data/Test" here! -1 will probably be returned...
-    wxASSERT( config->Read("Test", -1) == 17 );
+    wxASSERT( config->ReadLong("Test", -1) == 17 );
   }
 \end{verbatim}
 
@@ -186,7 +188,7 @@ regardless of the platform (i.e. it is {\bf not} '$\backslash\backslash$' under
 \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
@@ -199,6 +201,7 @@ explicitly.
 Having said all this, enumerating the config entries/groups is very simple:
 
 \begin{verbatim}
+  wxConfigBase *config = ...;
   wxArrayString aNames;
 
   // enumeration variables
@@ -259,13 +262,11 @@ 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
 will be returned if the specified key is not found in the config file.
 
-Currently, only two types of data are supported: string and long (but it might
-change in the near future). To work with other types: for {\it int} or {\it
-bool} you can work with function taking/returning {\it long} and just use the
-casts. Better yet, just use {\it long} for all variables which you're going to
-save in the config file: chances are that {\tt sizeof(bool) == sizeof(int) == sizeof(long)} anyhow on your system. For {\it float}, {\it double} and, in
-general, any other type you'd have to translate them to/from string
-representation and use string functions.
+Currently, supported types of data are:
+\helpref{wxString}{wxstring}, {\it long}, {\it double}, {\it bool},
+\helpref{wxColour}{wxcolour} and any other types,
+for which functions \helpref{wxToString}{wxtostring}
+and \helpref{wxFromString}{wxfromstring} are defined.
 
 Try not to read long values into string variables and vice versa: although it
 just might work with wxFileConfig, you will get a system error with
@@ -283,7 +284,7 @@ arbitrary path (either relative or absolute), not just the key name.
 \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.
@@ -350,7 +351,7 @@ The following functions control this option:
  \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.
@@ -374,17 +375,34 @@ this is not present, but required, the application name will be used instead.}
 
 \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-wxWidgets program (which might not 
@@ -427,7 +445,7 @@ created object and also sets it as the current one.
 
 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}
@@ -435,7 +453,7 @@ near the program end to prevent new config object "accidental" creation.
 \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}
@@ -450,14 +468,17 @@ in it and the second parameter is true.
 
 \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}
@@ -499,11 +520,11 @@ The result is an element of enum EntryType:
 \begin{verbatim}
   enum EntryType
   {
-    Unknown,
-    String,
-    Boolean,
-    Integer,
-    Float
+    Type_Unknown,
+    Type_String,
+    Type_Boolean,
+    Type_Integer,
+    Type_Float
   };
 \end{verbatim}
 
@@ -595,35 +616,35 @@ Returns the vendor name.
 
 \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}}
@@ -631,7 +652,7 @@ was not found, {\it str} is not changed.
 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}}
@@ -640,59 +661,59 @@ Another version of {\it Read()}, returning the string value directly.
 
 \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}}
-
-Reads a long value from the key and returns it. {\it defaultVal} is returned
-if the key is not found.
-
-NB: writing
-
-{\small
-\begin{verbatim}
-    conf->Read("key", 0);
-\end{verbatim}
-}
-
-won't work because the call is ambiguous: compiler can not choose between two
-{\it Read} functions. Instead, write:
-
-{\small
-\begin{verbatim}
-    conf->Read("key", 0l);
-\end{verbatim}
-}
-
 \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.
 
+\constfunc{bool}{Read}{\param{const wxString\& }{ key}, \param{wxMemoryBuffer*}{ buf}}
+
+Reads a binary block, returning \true if the value was found. If the value was
+not found, {\it buf} is not changed.
+
+\constfunc{bool}{Read}{\param{const wxString\& }{ key}, \param{T*}{ value}}
+
+Reads a value of type T, for which function
+\helpref{wxFromString}{wxfromstring} is defined,
+returning \true if the value was found.
+If the value was not found, {\it value} is not changed.
+
+\constfunc{bool}{Read}{\param{const wxString\& }{ key}, \param{T*}{ value},
+                       \param{T const\& }{ defaultVal}}
+
+Reads a value of type T, for which function
+\helpref{wxFromString}{wxfromstring} is defined,
+returning \true if the value was found.
+If the value was not found, {\it defaultVal} is used instead.
+
+bool Read(const wxString& key, T* value) const;
+
 \pythonnote{In place of a single overloaded method name, wxPython
 implements the following methods:\par
 \indented{2cm}{\begin{twocollist}
@@ -712,6 +733,39 @@ implements the following methods:\par
 }}
 
 
+\membersection{wxConfigBase::ReadBool}\label{wxconfigbasereadbool}
+
+\constfunc{long }{ReadBool}{\param{const wxString\& }{key}, \param{bool}{ defaultVal}}
+
+Reads a bool value from the key and returns it. {\it defaultVal} is returned
+if the key is not found.
+
+
+\membersection{wxConfigBase::ReadDouble}\label{wxconfigbasereaddouble}
+
+\constfunc{long }{ReadDouble}{\param{const wxString\& }{key}, \param{double}{ defaultVal}}
+
+Reads a double value from the key and returns it. {\it defaultVal} is returned
+if the key is not found.
+
+
+\membersection{wxConfigBase::ReadLong}\label{wxconfigbasereadlong}
+
+\constfunc{long }{ReadLong}{\param{const wxString\& }{key}, \param{long}{ defaultVal}}
+
+Reads a long value from the key and returns it. {\it defaultVal} is returned
+if the key is not found.
+
+
+\membersection{wxConfigBase::ReadObject}\label{wxconfigbasereadobject}
+
+\constfunc{T }{ReadObject}{\param{const wxString\& }{key}, \param{T const&}{ defaultVal}}
+
+Reads a value of type T, for which function
+\helpref{wxFromString}{wxfromstring} is defined, from the key and returns it. 
+{\it defaultVal} is returned if the key is not found.
+
+
 \membersection{wxConfigBase::RenameEntry}\label{wxconfigbaserenameentry}
 
 \func{bool}{RenameEntry}{\param{const wxString\& }{ oldName}, \param{const wxString\& }{ newName}}
@@ -720,7 +774,7 @@ Renames an entry in the current group. The entries names (both the old and
 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.
 
 
@@ -732,7 +786,7 @@ Renames a subgroup of the current group. The subgroup names (both the old and
 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.
 
 
@@ -756,7 +810,7 @@ Determine whether we wish to expand environment variables in key values.
 \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.
 
 
@@ -765,7 +819,7 @@ exist it is created.
 \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
@@ -783,8 +837,13 @@ value}}
 
 \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.
+\func{bool}{Write}{\param{const wxString\& }{ key}, \param{const wxMemoryBuffer\&}{ buf}}
+
+\func{bool}{Write}{\param{const wxString\& }{ key}, \param{const T\&}{ buf}}
+
+These functions write the specified value to the config file and return \true
+on success. In the last one, function \helpref{wxToString}{wxtostring} must be
+defined for type {\it T}.
 
 \pythonnote{In place of a single overloaded method name, wxPython
 implements the following methods:\par
@@ -803,3 +862,4 @@ implements the following methods:\par
 \twocolitem{{\bf WriteBool(key, value)}}{Writes a boolean}
 \end{twocollist}
 }}
+