docs/latex/wx/choice.tex

   1 \section{\class{wxChoice}}\label{wxchoice}
   2
   3 A choice item is used to select one of a list of strings. Unlike a
   4 listbox, only the selection is visible until the user pulls down the
   5 menu of choices.
   6
   7 \wxheading{Derived from}
   8
   9 \helpref{wxControlWithItems}{wxcontrolwithitems}\\
  10 \helpref{wxControl}{wxcontrol}\\
  11 \helpref{wxWindow}{wxwindow}\\
  12 \helpref{wxEvtHandler}{wxevthandler}\\
  13 \helpref{wxObject}{wxobject}
  14
  15 \wxheading{Include files}
  16
  17 <wx/choice.h>
  18
  19 \wxheading{Window styles}
  20
  21 There are no special styles for wxChoice.
  22
  23 See also \helpref{window styles overview}{windowstyles}.
  24
  25 \wxheading{Event handling}
  26
  27 \twocolwidtha{7cm}
  28 \begin{twocollist}\itemsep=0pt
  29 \twocolitem{{\bf EVT\_CHOICE(id, func)}}{Process a wxEVT\_COMMAND\_CHOICE\_SELECTED event,
  30 when an item on the list is selected.}
  31 \end{twocollist}
  32
  33 \wxheading{See also}
  34
  35 \helpref{wxListBox}{wxlistbox}, \helpref{wxComboBox}{wxcombobox},
  36 \rtfsp\helpref{wxCommandEvent}{wxcommandevent}
  37
  38 \latexignore{\rtfignore{\wxheading{Members}}}
  39
  40 \membersection{wxChoice::wxChoice}\label{wxchoiceconstr}
  41
  42 \func{}{wxChoice}{\void}
  43
  44 Default constructor.
  45
  46 \func{}{wxChoice}{\param{wxWindow *}{parent}, \param{wxWindowID}{ id},\rtfsp
  47 \param{const wxPoint\& }{pos}, \param{const wxSize\&}{ size},\rtfsp
  48 \param{int}{ n}, \param{const wxString }{choices[]},\rtfsp
  49 \param{long}{ style = 0}, \param{const wxValidator\& }{validator = wxDefaultValidator}, \param{const wxString\& }{name = ``choice"}}
  50
  51 Constructor, creating and showing a choice.
  52
  53 \wxheading{Parameters}
  54
  55 \docparam{parent}{Parent window. Must not be NULL.}
  56
  57 \docparam{id}{Window identifier. A value of -1 indicates a default value.}
  58
  59 \docparam{pos}{Window position.}
  60
  61 \docparam{size}{Window size. If the default size (-1, -1) is specified then the choice is sized
  62 appropriately.}
  63
  64 \docparam{n}{Number of strings with which to initialise the choice control.}
  65
  66 \docparam{choices}{An array of strings with which to initialise the choice control.}
  67
  68 \docparam{style}{Window style. See \helpref{wxChoice}{wxchoice}.}
  69
  70 \docparam{validator}{Window validator.}
  71
  72 \docparam{name}{Window name.}
  73
  74 \wxheading{See also}
  75
  76 \helpref{wxChoice::Create}{wxchoicecreate}, \helpref{wxValidator}{wxvalidator}
  77
  78 \pythonnote{The wxChoice constructor in wxPython reduces the {\tt n}
  79 and {\tt choices} arguments are to a single argument, which is
  80 a list of strings.}
  81
  82 \perlnote{In wxPerl there is just an array reference in place of {\tt n}
  83 and {\tt choices}.}
  84
  85 \membersection{wxChoice::\destruct{wxChoice}}
  86
  87 \func{}{\destruct{wxChoice}}{\void}
  88
  89 Destructor, destroying the choice item.
  90
  91 \membersection{wxChoice::Create}\label{wxchoicecreate}
  92
  93 \func{bool}{Create}{\param{wxWindow *}{parent}, \param{wxWindowID}{ id},\rtfsp
  94 \param{const wxPoint\& }{pos}, \param{const wxSize\&}{ size},\rtfsp
  95 \param{int}{ n}, \param{const wxString }{choices[]},\rtfsp
  96 \param{long}{ style = 0}, \param{const wxString\& }{name = ``choice"}}
  97
  98 Creates the choice for two-step construction. See \helpref{wxChoice::wxChoice}{wxchoiceconstr}.
  99
 100 \membersection{wxChoice::Delete}\label{wxchoicedelete}
 101
 102 \func{void}{Delete}{\param{int }{n}}
 103
 104 Deletes the item with the given index from the control.
 105
 106 \wxheading{Parameters}
 107
 108 \docparam{n}{The item to delete.}
 109
 110 \membersection{wxChoice::GetColumns}\label{wxchoicegetcolumns}
 111
 112 \constfunc{int}{GetColumns}{\void}
 113
 114 Gets the number of columns in this choice item.
 115
 116 \wxheading{Remarks}
 117
 118 This is implemented for Motif only and always returns $1$ for the other
 119 platforms.
 120
 121 \membersection{wxChoice::SetColumns}\label{wxchoicesetcolumns}
 122
 123 \func{void}{SetColumns}{\param{int}{ n = 1}}
 124
 125 Sets the number of columns in this choice item.
 126
 127 \wxheading{Parameters}
 128
 129 \docparam{n}{Number of columns.}
 130
 131 \wxheading{Remarks}
 132
 133 This is implemented for Motif only and doesn't do anything under other
 134 platforms.
 135