X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/a9241e6025b30c45a0cae02357eb226bfded460b..12ac619f42b81420980aec14afc9433af6f911dc:/docs/latex/wx/array.tex

diff --git a/docs/latex/wx/array.tex b/docs/latex/wx/array.tex
index b8e51c3a5b..e814dfad1e 100644
--- a/docs/latex/wx/array.tex
+++ b/docs/latex/wx/array.tex
@@ -97,7 +97,7 @@ class MyDirectory
 // now that we have MyDirectory declaration in scope we may finish the
 // definition of ArrayOfDirectories -- note that this expands into some C++
 // code and so should only be compiled once (i.e., don't put this in the
-// header, but into a source file or you will get linkin errors)
+// header, but into a source file or you will get linking errors)
 #include <wx/arrimpl.cpp> // this is a magic incantation which must be done!
 WX_DEFINE_OBJARRAY(ArrayOfDirectories);
 
@@ -117,10 +117,14 @@ Things are much simpler for wxArray and wxSortedArray however: it is enough
 just to write
 
 \begin{verbatim} 
-WX_DEFINE_ARRAY(MyDirectory *, ArrayOfDirectories);
-WX_DEFINE_SORTED_ARRAY(MyFile *, ArrayOfFiles);
+WX_DEFINE_ARRAY(int, ArrayOfDirectories);
+WX_DEFINE_SORTED_ARRAY(int, ArrayOfFiles);
 \end{verbatim}
 
+i.e. there is only one {\tt DEFINE} macro and no need for separate 
+{\tt DECLARE} one.
+
+
 \wxheading{See also:}
 
 \helpref{Container classes overview}{wxcontaineroverview}, \helpref{wxList}{wxlist}
@@ -152,6 +156,17 @@ WX\_DEFINE\_OBJARRAY macro.
 \helpref{WX\_DEFINE\_EXPORTED\_OBJARRAY}{wxdefineobjarray}\\
 \helpref{WX\_DEFINE\_USER\_EXPORTED\_OBJARRAY}{wxdefineobjarray}
 
+To slightly complicate the matters even further, the operator $->$ defined by
+default for the array iterators by these macros only makes sense if the array
+element type is not a pointer itself and, although it still works, this
+provokes warnings from some compilers and to avoid them you should use the 
+{\tt \_PTR} versions of the macros above. For example, to define an array of
+pointers to {\tt double} you should use
+
+\begin{verbatim} 
+WX_DEFINE_ARRAY_PTR(double *, MyArrayOfDoublePointers);
+\end{verbatim}
+
 \membersection{Constructors and destructors}
 
 Array classes are 100\% C++ objects and as such they have the appropriate copy
@@ -177,7 +192,7 @@ amount, but no more than some maximal number which is defined by
 ARRAY\_MAXSIZE\_INCREMENT constant. Of course, this may lead to some memory
 being wasted (ARRAY\_MAXSIZE\_INCREMENT in the worst case, i.e. 4Kb in the
 current implementation), so the \helpref{Shrink()}{wxarrayshrink} function is
-provided to unallocate the extra memory. The \helpref{Alloc()}{wxarrayalloc} 
+provided to deallocate the extra memory. The \helpref{Alloc()}{wxarrayalloc} 
 function can also be quite useful if you know in advance how many items you are
 going to put in the array and will prevent the array code from reallocating the
 memory more times than needed.
@@ -201,6 +216,7 @@ does exactly the same as \helpref{Item()}{wxarrayitem} method.
 
 \helpref{Add}{wxarrayadd}\\
 \helpref{Insert}{wxarrayinsert}\\
+\helpref{SetCount}{wxarraysetcount}\\
 \helpref{WX\_APPEND\_ARRAY}{wxappendarray}
 
 \membersection{Removing items}
@@ -307,7 +323,7 @@ Example:
 
 \begin{verbatim}
 class MyClass;
-WX_DEFINE_OBJARRAY(MyClass, wxArrayOfMyClass); // note: not "MyClass *"!
+WX_DECLARE_OBJARRAY(MyClass, wxArrayOfMyClass); // note: not "MyClass *"!
 \end{verbatim}
 
 You must use \helpref{WX\_DEFINE\_OBJARRAY()}{wxdefineobjarray} macro to define
@@ -413,14 +429,14 @@ done by wxArray and wxSortedArray versions - you may use
 
 \membersection{wxArray::Add}\label{wxarrayadd}
 
-\func{void}{Add}{\param{T }{item}}
+\func{void}{Add}{\param{T }{item}, \param{size\_t}{ copies = $1$}}
 
 \func{void}{Add}{\param{T *}{item}}
 
-\func{void}{Add}{\param{T \&}{item}}
+\func{void}{Add}{\param{T \&}{item}, \param{size\_t}{ copies = $1$}}
 
-Appends a new element to the array (where {\it T} is the type of the array
-elements.)
+Appends the given number of {\it copies} of the {\it item} to the array
+consisting of the elements of type {\it T}.
 
 The first version is used with wxArray and wxSortedArray. The second and the
 third are used with wxObjArray. There is an important difference between
@@ -428,10 +444,14 @@ them: if you give a pointer to the array, it will take ownership of it, i.e.
 will delete it when the item is deleted from the array. If you give a reference
 to the array, however, the array will make a copy of the item and will not take
 ownership of the original item. Once again, it only makes sense for wxObjArrays
-because the other array types never take ownership of their elements.
+because the other array types never take ownership of their elements. Also note
+that you cannot append more than one pointer as reusing it would lead to
+deleting it twice (or more) and hence to a crash.
 
 You may also use \helpref{WX\_APPEND\_ARRAY}{wxappendarray} macro to append all
-elements of one array to another one.
+elements of one array to another one but it is more efficient to use 
+{\it copies} parameter and modify the elements in place later if you plan to
+append a lot of items.
 
 \membersection{wxArray::Alloc}\label{wxarrayalloc}
 
@@ -481,7 +501,7 @@ Return the number of items in the array.
 
 \membersection{wxArray::Index}\label{wxarrayindex}
 
-\func{int}{Index}{\param{T\& }{item}, \param{bool }{searchFromEnd = FALSE}}
+\func{int}{Index}{\param{T\& }{item}, \param{bool }{searchFromEnd = false}}
 
 \func{int}{Index}{\param{T\& }{item}}
 
@@ -505,15 +525,15 @@ in the array.
 
 \membersection{wxArray::Insert}\label{wxarrayinsert}
 
-\func{void}{Insert}{\param{T }{item}, \param{size\_t }{n}}
+\func{void}{Insert}{\param{T }{item}, \param{size\_t }{n}, \param{size\_t }{copies = $1$}}
 
 \func{void}{Insert}{\param{T *}{item}, \param{size\_t }{n}}
 
-\func{void}{Insert}{\param{T \&}{item}, \param{size\_t }{n}}
+\func{void}{Insert}{\param{T \&}{item}, \param{size\_t }{n}, \param{size\_t }{copies = $1$}}
 
-Insert a new item into the array before the item {\it n} - thus, {\it Insert(something, 0u)} will
-insert an item in such way that it will become the
-first array element.
+Insert the given number of {\it copies} of the {\it item} into the array before
+the existing item {\it n} - thus, {\it Insert(something, 0u)} will insert an
+item in such way that it will become the first array element.
 
 Please see \helpref{Add()}{wxarrayadd} for explanation of the differences
 between the overloaded versions of this function.
@@ -522,7 +542,7 @@ between the overloaded versions of this function.
 
 \constfunc{bool}{IsEmpty}{\void}
 
-Returns TRUE if the array is empty, FALSE otherwise.
+Returns true if the array is empty, false otherwise.
 
 \membersection{wxArray::Item}\label{wxarrayitem}
 
@@ -569,13 +589,13 @@ elements of a wxArray (supposed to contain pointers).
 
 \membersection{wxArray::RemoveAt}\label{wxarrayremoveat}
 
-\func{\void}{RemoveAt}{\param{size\_t }{index}}
+\func{\void}{RemoveAt}{\param{size\_t }{index}, \param{size\_t }{count = $1$}}
 
-Removes an element from the array by index. When an element
-is removed from wxObjArray it is deleted by the array - use 
-\helpref{Detach()}{wxobjarraydetach} if you don't want this to happen. On the
-other hand, when an object is removed from a wxArray nothing happens - you
-should delete it manually if required:
+Removes {\it count} elements starting at {\it index} from the array. When an
+element is removed from wxObjArray it is deleted by the array - use
+\helpref{Detach()}{wxobjarraydetach} if you don't want this to happen. On
+the other hand, when an object is removed from a wxArray nothing happens -
+you should delete it manually if required:
 
 \begin{verbatim}
 T *item = array[n];
@@ -586,6 +606,19 @@ array.RemoveAt(n)
 See also \helpref{WX\_CLEAR\_ARRAY}{wxcleararray} macro which deletes all
 elements of a wxArray (supposed to contain pointers).
 
+\membersection{wxArray::SetCount}\label{wxarraysetcount}
+
+\func{void}{SetCount}{\param{size\_t }{count}, \param{T }{defval = T($0$)}}
+
+This function ensures that the number of array elements is at least 
+{\it count}. If the array has already {\it count} or mroe items, nothing is
+done. Otherwise, {\tt count - GetCount()} elements are added and initialized to
+the value {\it defval}.
+
+\wxheading{See also}
+
+\helpref{GetCount}{wxarraygetcount}
+
 \membersection{wxArray::Shrink}\label{wxarrayshrink}
 
 \func{void}{Shrink}{\void}
