A combobox permits a single selection only. Combobox items are numbered from zero.
+If you need a customized combobox, have a look at \helpref{wxComboCtrl}{wxcomboctrl},
+\helpref{wxOwnerDrawnComboBox}{wxownerdrawncombobox}, \helpref{wxComboPopup}{wxcombopopup}
+and the ready-to-use \helpref{wxBitmapComboBox}{wxbitmapcombobox}.
+
\wxheading{Derived from}
-\helpref{wxChoice}{wxchoice}\\
+\helpref{wxControlWithItems}{wxcontrolwithitems}\\
\helpref{wxControl}{wxcontrol}\\
\helpref{wxWindow}{wxwindow}\\
\helpref{wxEvtHandler}{wxevthandler}\\
\helpref{wxObject}{wxobject}
+\wxheading{Include files}
+
+<wx/combobox.h>
+
+\wxheading{Library}
+
+\helpref{wxCore}{librarieslist}
+
\wxheading{Window styles}
\begin{twocollist}\itemsep=0pt
-\twocolitem{\windowstyle{wxCB\_SIMPLE}}{Creates a combobox with a permanently displayed list.}
+\twocolitem{\windowstyle{wxCB\_SIMPLE}}{Creates a combobox with a permanently displayed list. Windows only. }
\twocolitem{\windowstyle{wxCB\_DROPDOWN}}{Creates a combobox with a drop-down list.}
-\twocolitem{\windowstyle{wxCB\_READONLY}}{Creates a combo box consisting of a drop-down list and static text item
-displaying the current selection.}
+\twocolitem{\windowstyle{wxCB\_READONLY}}{Same as wxCB\_DROPDOWN but only the
+strings specified as the combobox choices can be selected, it is impossible to
+select (even from a program) a string which is not in the choices list.}
\twocolitem{\windowstyle{wxCB\_SORT}}{Sorts the entries in the list alphabetically.}
+\twocolitem{\windowstyle{wxTE\_PROCESS\_ENTER}}{The control will generate
+the event wxEVT\_COMMAND\_TEXT\_ENTER (otherwise pressing Enter key
+is either processed internally by the control or used for navigation between
+dialog controls). Windows only.}
\end{twocollist}
See also \helpref{window styles overview}{windowstyles}.
+\wxheading{Event handling}
+
+\twocolwidtha{7cm}
+\begin{twocollist}\itemsep=0pt
+\twocolitem{{\bf EVT\_COMBOBOX(id, func)}}{Process a wxEVT\_COMMAND\_COMBOBOX\_SELECTED event,
+when an item on the list is selected. Note that calling
+\helpref{GetValue}{wxcomboboxgetvalue} returns the new value of selection.}
+\twocolitem{{\bf EVT\_TEXT(id, func)}}{Process a wxEVT\_COMMAND\_TEXT\_UPDATED event,
+when the combobox text changes.}
+\twocolitem{{\bf EVT\_TEXT\_ENTER(id, func)}}{Process a wxEVT\_COMMAND\_TEXT\_ENTER event,
+when <RETURN> is pressed in the combobox.}
+\end{twocollist}
+
\wxheading{See also}
-\helpref{wxListBox}{wxlistbox}, \helpref{wxTextCtrl}{wxtextctrl}, \helpref{wxChoice}{wxchoice}
+\helpref{wxListBox}{wxlistbox}, \helpref{wxTextCtrl}{wxtextctrl}, \helpref{wxChoice}{wxchoice},
+\rtfsp\helpref{wxCommandEvent}{wxcommandevent}
\latexignore{\rtfignore{\wxheading{Members}}}
-\membersection{wxComboBox::wxComboBox}\label{wxcomboboxconstr}
+
+\membersection{wxComboBox::wxComboBox}\label{wxcomboboxctor}
\func{}{wxComboBox}{\void}
Default constructor.
-\func{}{wxComboBox}{\param{wxWindow*}{ parent}, \param{const wxWindowID}{ id},\rtfsp
+\func{}{wxComboBox}{\param{wxWindow*}{ parent}, \param{wxWindowID}{ id},\rtfsp
\param{const wxString\& }{value = ``"}, \param{const wxPoint\&}{ pos = wxDefaultPosition}, \param{const wxSize\&}{ size = wxDefaultSize},\rtfsp
-\param{const int}{ n}, \param{const wxString }{choices[]},\rtfsp
-\param{const long}{ style = 0}, \param{const wxValidator\& }{validator = wxDefaultValidator}, \param{const wxString\& }{name = ``comboBox"}}
+\param{int}{ n = 0}, \param{const wxString }{choices[] = NULL},\rtfsp
+\param{long}{ style = 0}, \param{const wxValidator\& }{validator = wxDefaultValidator}, \param{const wxString\& }{name = ``comboBox"}}
+
+\func{}{wxComboBox}{\param{wxWindow*}{ parent}, \param{wxWindowID}{ id},\rtfsp
+\param{const wxString\& }{value}, \param{const wxPoint\&}{ pos}, \param{const wxSize\&}{ size},\rtfsp
+\param{const wxArrayString\& }{choices},\rtfsp
+\param{long}{ style = 0}, \param{const wxValidator\& }{validator = wxDefaultValidator}, \param{const wxString\& }{name = ``comboBox"}}
Constructor, creating and showing a combobox.
\docparam{id}{Window identifier. A value of -1 indicates a default value.}
+\docparam{value}{Initial selection string. An empty string indicates no selection.}
+
\docparam{pos}{Window position.}
\docparam{size}{Window size. If the default size (-1, -1) is specified then the window is sized
\helpref{wxComboBox::Create}{wxcomboboxcreate}, \helpref{wxValidator}{wxvalidator}
-\membersection{wxComboBox::\destruct{wxComboBox}}
+\pythonnote{The wxComboBox constructor in wxPython reduces the {\tt n}
+and {\tt choices} arguments are to a single argument, which is
+a list of strings.}
+
+\perlnote{In wxPerl there is just an array reference in place of {\tt n}
+and {\tt choices}.}
+
+
+\membersection{wxComboBox::\destruct{wxComboBox}}\label{wxcomboboxdtor}
\func{}{\destruct{wxComboBox}}{\void}
Destructor, destroying the combobox.
-\membersection{wxComboBox::Append}\label{wxcomboboxappend}
-\func{void}{Append}{\param{const wxString\& }{item}}
-
-Adds the item to the end of the combobox.
+\membersection{wxComboBox::Create}\label{wxcomboboxcreate}
-\func{void}{Append}{\param{const wxString\& }{ item}, \param{char* }{clientData}}
+\func{bool}{Create}{\param{wxWindow*}{ parent}, \param{wxWindowID}{ id},\rtfsp
+\param{const wxString\& }{value = ``"}, \param{const wxPoint\&}{ pos = wxDefaultPosition}, \param{const wxSize\&}{ size = wxDefaultSize},\rtfsp
+\param{int}{ n}, \param{const wxString }{choices[]},\rtfsp
+\param{long}{ style = 0}, \param{const wxValidator\& }{validator = wxDefaultValidator}, \param{const wxString\& }{name = ``comboBox"}}
-Adds the item to the end of the combobox, associating the given data
-with the item.
+\func{bool}{Create}{\param{wxWindow*}{ parent}, \param{wxWindowID}{ id},\rtfsp
+\param{const wxString\& }{value}, \param{const wxPoint\&}{ pos}, \param{const wxSize\&}{ size},\rtfsp
+\param{const wxArrayString\& }{choices},\rtfsp
+\param{long}{ style = 0}, \param{const wxValidator\& }{validator = wxDefaultValidator}, \param{const wxString\& }{name = ``comboBox"}}
-\wxheading{Parameters}
+Creates the combobox for two-step construction. Derived classes
+should call or replace this function. See \helpref{wxComboBox::wxComboBox}{wxcomboboxctor}\rtfsp
+for further details.
-\docparam{item}{The string to add.}
-\docparam{clientData}{Client data to associate with the item.}
+\membersection{wxComboBox::CanCopy}\label{wxcomboboxcancopy}
-\membersection{wxComboBox::Clear}\label{wxcomboboxclear}
+\constfunc{bool}{CanCopy}{\void}
-\func{void}{Clear}{\void}
+Returns true if the combobox is editable and there is a text selection to copy to the clipboard.
+Only available on Windows.
-Clears all strings from the combobox.
-\membersection{wxComboBox::Create}\label{wxcomboboxcreate}
+\membersection{wxComboBox::CanCut}\label{wxcomboboxcancut}
-\func{bool}{Create}{\param{wxWindow*}{ parent}, \param{const wxWindowID}{ id},\rtfsp
-\param{const wxString\& }{value = ``"}, \param{const wxPoint\&}{ pos = wxDefaultPosition}, \param{const wxSize\&}{ size = wxDefaultSize},\rtfsp
-\param{const int}{ n}, \param{const wxString }{choices[]},\rtfsp
-\param{const long}{ style = 0}, \param{const wxValidator\& }{validator = wxDefaultValidator}, \param{const wxString\& }{name = ``comboBox"}}
+\constfunc{bool}{CanCut}{\void}
-Creates the combobox for two-step construction. Derived classes
-should call or replace this function. See \helpref{wxComboBox::wxComboBox}{wxcomboboxconstr}\rtfsp
-for further details.
+Returns true if the combobox is editable and there is a text selection to copy to the clipboard.
+Only available on Windows.
-\membersection{wxComboBox::Copy}\label{wxcomboboxcopy}
-\func{void}{Copy}{\void}
+\membersection{wxComboBox::CanPaste}\label{wxcomboboxcanpaste}
-Copies the selected text to the clipboard.
+\constfunc{bool}{CanPaste}{\void}
-\membersection{wxComboBox::Cut}\label{wxcomboboxcut}
+Returns true if the combobox is editable and there is text on the clipboard that can be pasted into the
+text field. Only available on Windows.
-\func{void}{Cut}{\void}
-Copies the selected text to the clipboard and removes the selection.
+\membersection{wxComboBox::CanRedo}\label{wxcomboboxcanredo}
-\membersection{wxComboBox::Delete}\label{wxcomboboxdelete}
+\constfunc{bool}{CanRedo}{\void}
-\func{void}{Delete}{\param{const int}{ n}}
+Returns true if the combobox is editable and the last undo can be redone.
+Only available on Windows.
-Deletes an item from the combobox.
-\wxheading{Parameters}
+\membersection{wxComboBox::CanUndo}\label{wxcomboboxcanundo}
-\docparam{n}{The item to delete, starting from zero.}
+\constfunc{bool}{CanUndo}{\void}
-\membersection{wxComboBox::FindString}\label{wxcomboboxfindstring}
+Returns true if the combobox is editable and the last edit can be undone.
+Only available on Windows.
-\func{int}{FindString}{\param{const wxString\& }{string}}
-Finds a choice matching the given string.
+\membersection{wxComboBox::Copy}\label{wxcomboboxcopy}
-\wxheading{Parameters}
+\func{void}{Copy}{\void}
-\docparam{string}{The item to find.}
+Copies the selected text to the clipboard.
-\wxheading{Return value}
-The position if found, or -1 if not found.
+\membersection{wxComboBox::Cut}\label{wxcomboboxcut}
-\membersection{wxComboBox::GetClientData}\label{wxcomboboxgetclientdata}
+\func{void}{Cut}{\void}
-\constfunc{char*}{GetClientData}{\param{const int}{ n}}
+Copies the selected text to the clipboard and removes the selection.
-Returns a pointer to the client data associated with the given item (if any).
-\wxheading{Parameters}
+\membersection{wxComboBox::GetCurrentSelection}\label{wxcomboboxgetcurrentselection}
-\docparam{n}{An item, starting from zero.}
+\constfunc{int}{GetCurrentSelection}{\void}
-\wxheading{Return value}
+This function does the same things as
+\helpref{wxChoice::GetCurrentSelection}{wxchoicegetcurrentselection} and
+returns the item currently selected in the dropdown list if it's open or the
+same thing as \helpref{GetSelection}{wxcontrolwithitemsgetselection} otherwise.
-A pointer to the client data, or NULL if the item was not found.
\membersection{wxComboBox::GetInsertionPoint}\label{wxcomboboxgetinsertionpoint}
Returns the insertion point for the combobox's text field.
-\membersection{wxComboBox::GetLastPosition}\label{wxcomboboxgetlastposition}
-
-\constfunc{long}{GetLastPosition}{\void}
-
-Returns the last position in the combobox text field.
-
-\membersection{wxComboBox::GetSelection}\label{wxcomboboxgetselection}
-
-\constfunc{int}{GetSelection}{\void}
+\textbf{Note:} Under wxMSW, this function always returns $0$ if the combobox
+doesn't have the focus.
-Gets the position of the selected string, or -1 if there is no selection.
-\membersection{wxComboBox::GetString}\label{wxcomboboxgetstring}
-
-\constfunc{wxString}{GetString}{\param{int}{ n}}
+\membersection{wxComboBox::GetLastPosition}\label{wxcomboboxgetlastposition}
-Returns the string at position {\it n}.
+\constfunc{virtual wxTextPos}{GetLastPosition}{\void}
-\wxheading{Parameters}
+Returns the last position in the combobox text field.
-\docparam{n}{The item position, starting from zero.}
-\wxheading{Return value}
+\membersection{wxComboBox::GetSelection}\label{wxcomboboxgetselection}
-The string if the item is found, otherwise the empty string.
+\constfunc{void}{GetSelection}{\param{long *}{from}, \param{long *}{to}}
-\membersection{wxComboBox::GetStringSelection}\label{wxcomboboxgetstringselection}
+This is the same as \helpref{wxTextCtrl::GetSelection}{wxtextctrlgetselection}
+for the text control which is part of the combobox. Notice that this is a
+different method from \helpref{wxControlWithItems::GetSelection}{wxcontrolwithitemsgetselection}.
-\constfunc{wxString}{GetStringSelection}{\void}
+Currently this method is only implemented in wxMSW and wxGTK.
-Gets the selected string.
\membersection{wxComboBox::GetValue}\label{wxcomboboxgetvalue}
Returns the current value in the combobox text field.
-\membersection{wxComboBox::Number}\label{wxcomboboxnumber}
-
-\constfunc{int}{Number}{\void}
-
-Returns the number of items in the combobox list.
-
-TODO: make this GetNumber or GetCount?
\membersection{wxComboBox::Paste}\label{wxcomboboxpaste}
Pastes text from the clipboard to the text field.
+
+\membersection{wxComboBox::Redo}\label{wxcomboboxredo}
+
+\func{void}{Redo}{\void}
+
+Redoes the last undo in the text field. Windows only.
+
+
\membersection{wxComboBox::Replace}\label{wxcomboboxreplace}
-\func{void}{Replace}{\param{const long}{ from}, \param{const long}{ to}, \param{const wxString\& }{text}}
+\func{void}{Replace}{\param{long}{ from}, \param{long}{ to}, \param{const wxString\& }{text}}
Replaces the text between two positions with the given text, in the combobox text field.
\docparam{text}{The text to insert.}
+
\membersection{wxComboBox::Remove}\label{wxcomboboxremove}
-\func{void}{Remove}{\param{const long}{ from}, \param{const long}{ to}}
+\func{void}{Remove}{\param{long}{ from}, \param{long}{ to}}
Removes the text between the two positions in the combobox text field.
\docparam{to}{The last position.}
-\membersection{wxComboBox::SetClientData}\label{wxcomboboxsetclientdata}
-
-\func{void}{SetClientData}{\param{const int}{ n}, \param{char* }{data}}
-
-Associates the given client data pointer with the given item.
-
-\wxheading{Parameters}
-
-\docparam{n}{The zero-based item.}
-
-\docparam{data}{The client data.}
\membersection{wxComboBox::SetInsertionPoint}\label{wxcomboboxsetinsertionpoint}
-\func{void}{SetInsertionPoint}{\param{const long}{ pos}}
+\func{void}{SetInsertionPoint}{\param{long}{ pos}}
Sets the insertion point in the combobox text field.
\docparam{pos}{The new insertion point.}
+
\membersection{wxComboBox::SetInsertionPointEnd}\label{wxcomboboxsetinsertionpointend}
\func{void}{SetInsertionPointEnd}{\void}
Sets the insertion point at the end of the combobox text field.
-\membersection{wxComboBox::SetSelection}\label{wxcomboboxsetselection}
-\func{void}{SetSelection}{\param{const int}{ n}}
-
-Selects the given item in the combobox list.
+\membersection{wxComboBox::SetSelection}\label{wxcomboboxsetselection}
-\func{void}{SetSelection}{\param{const long}{ from}, \param{const long}{ to}}
+\func{void}{SetSelection}{\param{long}{ from}, \param{long}{ to}}
Selects the text between the two positions, in the combobox text field.
\wxheading{Parameters}
-\docparam{n}{The zero-based item to select.}
-
\docparam{from}{The first position.}
\docparam{to}{The second position.}
+\pythonnote{This method is called {\tt SetMark} in wxPython, {\tt SetSelection}
+name is kept for
+\helpref{wxControlWithItems::SetSelection}{wxcontrolwithitemssetselection}.}
+
+
\membersection{wxComboBox::SetValue}\label{wxcomboboxsetvalue}
\func{void}{SetValue}{\param{const wxString\& }{text}}
Sets the text for the combobox text field.
+{\bf NB:} For a combobox with {\tt wxCB\_READONLY} style the string must be in
+the combobox choices list, otherwise the call to SetValue() is ignored.
+
\wxheading{Parameters}
\docparam{text}{The text to set.}
+\membersection{wxComboBox::Undo}\label{wxcomboboxundo}
+
+\func{void}{Undo}{\void}
+
+Undoes the last edit in the text field. Windows only.
+
projects / wxWidgets.git / blobdiff