docs/latex/wx/checkbox.tex

   1 \section{\class{wxCheckBox}}\label{wxcheckbox}
   2
   3 A checkbox is a labelled box which by default is either on (checkmark is visible)
   4 or off (no checkmark). Optionally (When the wxCHK_3STATE style flag is set) it can have
   5 a third state, called the mixed or undetermined state. Often this is used as a "Does Not Apply" state.
   6
   7 \wxheading{Derived from}
   8
   9 \helpref{wxControl}{wxcontrol}\\
  10 \helpref{wxWindow}{wxwindow}\\
  11 \helpref{wxEvtHandler}{wxevthandler}\\
  12 \helpref{wxObject}{wxobject}
  13
  14 \wxheading{Include files}
  15
  16 <wx/checkbox.h>
  17
  18 \wxheading{Window styles}
  19
  20 \twocolwidtha{7cm}
  21 \begin{twocollist}\itemsep=0pt
  22 \twocolitem{\windowstyle{wxCHK\_2STATE}}{Create a 2-state checkbox (This is the default).}
  23 \twocolitem{\windowstyle{wxCHK\_3STATE}}{Create a 3-state checkbox.}
  24 \twocolitem{\windowstyle{wxCHK\_ALLOW\_3RD\_STATE\_FOR\_USER}}{By default a user can't set a 3-state checkbox
  25 to the third state. It can only be done from code. Using this flags allows the user to set the checkbox to the third state by clicking. }
  26 \twocolitem{\windowstyle{wxALIGN\_RIGHT}}{Makes the text appear on the left of the checkbox.}
  27 \end{twocollist}
  28
  29 See also \helpref{window styles overview}{windowstyles}.
  30
  31 \wxheading{Event handling}
  32
  33 \twocolwidtha{7cm}
  34 \begin{twocollist}\itemsep=0pt
  35 \twocolitem{{\bf EVT\_CHECKBOX(id, func)}}{Process a wxEVT\_COMMAND\_CHECKBOX\_CLICKED event,
  36 when the checkbox is clicked.}
  37 \end{twocollist}
  38
  39 \wxheading{See also}
  40
  41 \helpref{wxRadioButton}{wxradiobutton}, \helpref{wxCommandEvent}{wxcommandevent}
  42
  43 \latexignore{\rtfignore{\wxheading{Members}}}
  44
  45 \membersection{wxCheckBox::wxCheckBox}\label{wxcheckboxconstr}
  46
  47 \func{}{wxCheckBox}{\void}
  48
  49 Default constructor.
  50
  51 \func{}{wxCheckBox}{\param{wxWindow* }{parent}, \param{wxWindowID}{ id},\rtfsp
  52 \param{const wxString\& }{label}, \param{const wxPoint\& }{pos = wxDefaultPosition},\rtfsp
  53 \param{const wxSize\& }{size = wxDefaultSize}, \param{long}{ style = 0},\rtfsp
  54 \param{const wxValidator\& }{val}, \param{const wxString\& }{name = ``checkBox"}}
  55
  56 Constructor, creating and showing a checkbox.
  57
  58 \wxheading{Parameters}
  59
  60 \docparam{parent}{Parent window. Must not be NULL.}
  61
  62 \docparam{id}{Checkbox identifier. A value of -1 indicates a default value.}
  63
  64 \docparam{label}{Text to be displayed next to the checkbox.}
  65
  66 \docparam{pos}{Checkbox position. If the position (-1, -1) is specified then a default position is chosen.}
  67
  68 \docparam{size}{Checkbox size. If the default size (-1, -1) is specified then a default size is chosen.}
  69
  70 \docparam{style}{Window style. See \helpref{wxCheckBox}{wxcheckbox}.}
  71
  72 \docparam{validator}{Window validator.}
  73
  74 \docparam{name}{Window name.}
  75
  76 \wxheading{See also}
  77
  78 \helpref{wxCheckBox::Create}{wxcheckboxcreate}, \helpref{wxValidator}{wxvalidator}
  79
  80 \membersection{wxCheckBox::\destruct{wxCheckBox}}
  81
  82 \func{}{\destruct{wxCheckBox}}{\void}
  83
  84 Destructor, destroying the checkbox.
  85
  86 \membersection{wxCheckBox::Create}\label{wxcheckboxcreate}
  87
  88 \func{bool}{Create}{\param{wxWindow* }{parent}, \param{wxWindowID}{ id},\rtfsp
  89 \param{const wxString\& }{label}, \param{const wxPoint\& }{pos = wxDefaultPosition},\rtfsp
  90 \param{const wxSize\& }{size = wxDefaultSize}, \param{long}{ style = 0},\rtfsp
  91 \param{const wxValidator\& }{val}, \param{const wxString\& }{name = ``checkBox"}}
  92
  93 Creates the checkbox for two-step construction. See \helpref{wxCheckBox::wxCheckBox}{wxcheckboxconstr}\rtfsp
  94 for details.
  95
  96 \membersection{wxCheckBox::GetValue}\label{wxcheckboxgetvalue}
  97
  98 \constfunc{bool}{GetValue}{\void}
  99
 100 Gets the state of a 2-state checkbox.
 101
 102 \wxheading{Return value}
 103
 104 Returns \true if it is checked, \false otherwise.
 105
 106 \membersection{wxCheckBox::Get3StateValue}\label{wxcheckboxgetthreestatevalue}
 107
 108 \constfunc{wxCheckBoxState}{Get3StateValue}{\void}
 109
 110 Gets the state of a 3-state checkbox.
 111
 112 \wxheading{Return value}
 113
 114 Returns wxCHK\_UNCHECKED when the checkbox is unchecked, wxCHK\_CHECKED
 115  when it is checked and wxCHK\_UNDETERMINED when it's in the undetermined
 116 state. Asserts when the function is used with a 2-state checkbox.
 117
 118 \membersection{wxCheckBox::Is3rdStateAllowedForUser}\label{wxcheckboxis3rdstateallowedforuser}
 119
 120 \constfunc{bool}{Is3rdStateAllowedForUser}{\void}
 121
 122 Returns whether or not the user can set the checkbox to the third state.
 123
 124 \wxheading{Return value}
 125
 126 Returns \true if the user can set the third state of this checkbox, \false if it can only be set
 127 programmatically or if it's a 2-state checkbox.
 128
 129 \membersection{wxCheckBox::Is3State}\label{wxcheckboxis3state}
 130
 131 \constfunc{bool}{Is3State}{\void}
 132
 133 Returns whether or not the checkbox is a 3-state checkbox.
 134
 135 \wxheading{Return value}
 136
 137 Returns \true if this checkbox is a 3-state checkbox, \false if it's a 2-state checkbox.
 138
 139 \membersection{wxCheckBox::IsChecked}\label{wxcheckboxischecked}
 140
 141 \constfunc{bool}{IsChecked}{\void}
 142
 143 This is just a maybe more readable synonym for
 144 \helpref{GetValue}{wxcheckboxgetvalue}: just as the latter, it returns
 145 \true if the checkbox is checked and \false otherwise.
 146
 147 \membersection{wxCheckBox::SetValue}\label{wxcheckboxsetvalue}
 148
 149 \func{void}{SetValue}{\param{const bool}{ state}}
 150
 151 Sets the checkbox to the given state. This does not cause a
 152 wxEVT\_COMMAND\_CHECKBOX\_CLICKED event to get emitted.
 153
 154 \wxheading{Parameters}
 155
 156 \docparam{state}{If \true, the check is on, otherwise it is off.}
 157
 158 \membersection{wxCheckBox::Set3StateValue}\label{wxcheckboxset3statevalue}
 159
 160 \func{void}{Set3StateValue}{\param{const wxCheckBoxState}{ state}}
 161
 162 Sets the checkbox to the given state. This does not cause a
 163 wxEVT\_COMMAND\_CHECKBOX\_CLICKED event to get emitted.
 164
 165 \wxheading{Parameters}
 166
 167 \docparam{state}{Can be one of: wxCHK\_UNCHECKED (Check is off), wxCHK\_CHECKED
 168  (Check is on) or wxCHK\_UNDETERMINED (Check is mixed). Asserts when the checkbox
 169  is a 2-state checkbox and setting the state to wxCHK\_UNDETERMINED.}