// Name: combobox.h
// Purpose: interface of wxComboBox
// Author: wxWidgets team
-// RCS-ID: $Id$
-// Licence: wxWindows license
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
/**
It can be displayed as static list with editable or read-only text field;
or a drop-down list with text field; or a drop-down list without a text
- field.
+ field depending on the platform and presence of wxCB_READONLY style.
A combobox permits a single selection only. Combobox items are numbered
from zero.
wxOwnerDrawnComboBox, wxComboPopup and the ready-to-use wxBitmapComboBox.
Please refer to wxTextEntry documentation for the description of methods
- operating with the text entry part of the combobox.
+ operating with the text entry part of the combobox and to wxItemContainer
+ for the methods operating with the list of strings. Notice that at least
+ under MSW wxComboBox doesn't behave correctly if it contains strings
+ differing in case only so portable programs should avoid adding such
+ strings to this control.
@beginStyleTable
@style{wxCB_SIMPLE}
Creates a combobox with a permanently displayed list. Windows only.
@style{wxCB_DROPDOWN}
- Creates a combobox with a drop-down list.
+ Creates a combobox with a drop-down list. MSW and Motif only.
@style{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.
+ A combobox with this style behaves like a wxChoice (and may look in
+ the same way as well, although this is platform-dependent), i.e. it
+ allows the user to choose from the list of options but doesn't allow
+ to enter a value not present in the list.
@style{wxCB_SORT}
Sorts the entries in the list alphabetically.
@style{wxTE_PROCESS_ENTER}
- The control will generate the event wxEVT_COMMAND_TEXT_ENTER
+ The control will generate the event @c wxEVT_TEXT_ENTER
(otherwise pressing Enter key is either processed internally by the
- control or used for navigation between dialog controls). Windows
- only.
+ control or used for navigation between dialog controls).
@endStyleTable
@beginEventEmissionTable{wxCommandEvent}
@event{EVT_COMBOBOX(id, func)}
- Process a wxEVT_COMMAND_COMBOBOX_SELECTED event, when an item on
+ Process a @c wxEVT_COMBOBOX event, when an item on
the list is selected. Note that calling GetValue() returns the new
value of selection.
@event{EVT_TEXT(id, func)}
- Process a wxEVT_COMMAND_TEXT_UPDATED event, when the combobox text
+ Process a @c wxEVT_TEXT event, when the combobox text
changes.
@event{EVT_TEXT_ENTER(id, func)}
- Process a wxEVT_COMMAND_TEXT_ENTER event, when RETURN is pressed in
+ Process a @c wxEVT_TEXT_ENTER event, when RETURN is pressed in
the combobox (notice that the combobox must have been created with
wxTE_PROCESS_ENTER style to receive this event).
- @event{EVT_COMBOX_DROPDOWN(id, func)}
- Process a wxEVT_COMMAND_COMBOBOX_DROPDOWN event, which is generated
+ @event{EVT_COMBOBOX_DROPDOWN(id, func)}
+ Process a @c wxEVT_COMBOBOX_DROPDOWN event, which is generated
when the list box part of the combo box is shown (drops down).
Notice that this event is currently only supported by wxMSW and
wxGTK with GTK+ 2.10 or later.
- @event{EVT_COMBOX_CLOSEUP(id, func)}
- Process a wxEVT_COMMAND_COMBOBOX_CLOSEUP event, which is generated
+ @event{EVT_COMBOBOX_CLOSEUP(id, func)}
+ Process a @c wxEVT_COMBOBOX_CLOSEUP event, which is generated
when the list box of the combo box disappears (closes up). This
event is only generated for the same platforms as
- wxEVT_COMMAND_COMBOBOX_DROPDOWN above.
+ @c wxEVT_COMBOBOX_DROPDOWN above. Also note that only wxMSW
+ supports adding or deleting items in this event.
@endEventTable
@library{wxcore}
@category{ctrl}
- @appearance{combobox.png}
+ @appearance{combobox}
@see wxListBox, wxTextCtrl, wxChoice, wxCommandEvent
*/
*/
wxComboBox();
- //@{
/**
Constructor, creating and showing a combobox.
string must be one of the valid choices if it is not empty.
@param pos
Window position.
+ If ::wxDefaultPosition is specified then a default position is chosen.
@param size
- Window size. If wxDefaultSize is specified then the window is sized
- appropriately.
+ Window size.
+ If ::wxDefaultSize is specified then the window is sized appropriately.
@param n
Number of strings with which to initialise the control.
@param choices
@param name
Window name.
- @beginWxPythonOnly
- The wxComboBox constructor in wxPython reduces the @a n and @a choices
- arguments are to a single argument, which is a list of strings.
- @endWxPythonOnly
+ @beginWxPerlOnly
+ Not supported by wxPerl.
+ @endWxPerlOnly
@see Create(), wxValidator
*/
@param name
Window name.
- @beginWxPythonOnly
- The wxComboBox constructor in wxPython reduces the @a n and @a choices
- arguments are to a single argument, which is a list of strings.
- @endWxPythonOnly
+ @beginWxPerlOnly
+ Use an array reference for the @a choices parameter.
+ @endWxPerlOnly
@see Create(), wxValidator
*/
long style = 0,
const wxValidator& validator = wxDefaultValidator,
const wxString& name = wxComboBoxNameStr);
- //@}
/**
Destructor, destroying the combobox.
virtual long GetInsertionPoint() const;
/**
- Same as wxTextEntry::SetSelection().
+ IsEmpty() is not available in this class.
+
+ This method is documented here only to notice that it can't be used
+ with this class because of the ambiguity between the methods with the
+ same name inherited from wxItemContainer and wxTextEntry base classes.
+
+ Because of this, any attempt to call it results in a compilation error
+ and you should use either IsListEmpty() or IsTextEmpty() depending on
+ what exactly do you want to test.
+ */
+ bool IsEmpty() const;
+
+ /**
+ Returns true if the list of combobox choices is empty.
- @beginWxPythonOnly
- This method is called SetMark() in wxPython, "SetSelection" is kept for
- wxControlWithItems::SetSelection().
- @endWxPythonOnly
+ Use this method instead of (not available in this class) IsEmpty() to
+ test if the list of items is empty.
+
+ @since 2.9.3
+ */
+ bool IsListEmpty() const;
+
+ /**
+ Returns true if the text of the combobox is empty.
+
+ Use this method instead of (not available in this class) IsEmpty() to
+ test if the text currently entered into the combobox is empty.
+
+ @since 2.9.3
+ */
+ bool IsTextEmpty() const;
+
+ /**
+ Same as wxTextEntry::SetSelection().
*/
virtual void SetSelection(long from, long to);
/**
Sets the text for the combobox text field.
+ Notice that this method will generate a @c wxEVT_TEXT
+ event, use wxTextEntry::ChangeValue() if this is undesirable.
+
@note For a combobox with @c wxCB_READONLY style the string must be in
the combobox choices list, otherwise the call to SetValue() is
- ignored.
+ ignored. This is case insensitive.
@param text
The text to set.
*/
virtual void SetValue(const wxString& text);
+
+ /**
+ Shows the list box portion of the combo box.
+
+ Currently this method is implemented in wxMSW, wxGTK and wxOSX/Cocoa.
+
+ Notice that calling this function will generate a
+ @c wxEVT_COMBOBOX_DROPDOWN event except under wxOSX where
+ generation of this event is not supported at all.
+
+ @since 2.9.1
+ */
+ virtual void Popup();
+
+ /**
+ Hides the list box portion of the combo box.
+
+ Currently this method is implemented in wxMSW, wxGTK and wxOSX/Cocoa.
+
+ Notice that calling this function will generate a
+ @c wxEVT_COMBOBOX_CLOSEUP event except under wxOSX where
+ generation of this event is not supported at all.
+
+ @since 2.9.1
+ */
+ virtual void Dismiss();
+
+ virtual int GetSelection() const;
+ virtual void GetSelection(long *from, long *to) const;
+ virtual void SetSelection(int n);
+ virtual int FindString(const wxString& s, bool bCase = false) const;
+ virtual wxString GetString(unsigned int n) const;
+ virtual wxString GetStringSelection() const;
+
+ /**
+ Changes the text of the specified combobox item.
+
+ Notice that if the item is the currently selected one, i.e. if its text
+ is displayed in the text part of the combobox, then the text is also
+ replaced with the new @a text.
+ */
+ virtual void SetString(unsigned int n, const wxString& text);
+
+ virtual unsigned int GetCount() const;
};
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