A list control presents lists in a number of formats: list view, report view, icon view and small icon view. In any case, elements are numbered from zero. For all these modes, the items are stored in the control and must be added to it using InsertItem method.
A special case of report view quite different from the other modes of the list control is a virtual control in which the items data (including text, images and attributes) is managed by the main program and is requested by the control itself only when needed which allows to have controls with millions of items without consuming much memory. To use virtual list control you must use SetItemCount first and overload at least OnGetItemText (and optionally OnGetItemImage and OnGetItemAttr) to return the information about the items when the control requests it. Virtual list control can be used as a normal one except that no operations which can take time proportional to the number of items in the control happen - this is required to allow having a practically infinite number of items. For example, in a multiple selection virtual list control, the selections won't be sent when many items are selected at once because this could mean iterating over all the items.
Using many of wxListCtrl features is shown in the corresponding sample.
To intercept events from a list control, use the event table macros described in wxListEvent.
Derived from
wxControl
wxWindow
wxEvtHandler
wxObject
Include files
<wx/listctrl.h>
Window styles
See also window styles overview.
Event handling
To process input from a list control, use these event handler macros to direct input to member functions that take a wxListEvent argument.
EVT_LIST_BEGIN_DRAG(id, func) | Begin dragging with the left mouse button. |
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EVT_LIST_BEGIN_RDRAG(id, func) | Begin dragging with the right mouse button. |
EVT_LIST_BEGIN_LABEL_EDIT(id, func) | Begin editing a label. This can be prevented by calling Veto(). |
EVT_LIST_END_LABEL_EDIT(id, func) | Finish editing a label. This can be prevented by calling Veto(). |
EVT_LIST_DELETE_ITEM(id, func) | Delete an item. |
EVT_LIST_DELETE_ALL_ITEMS(id, func) | Delete all items. |
EVT_LIST_ITEM_SELECTED(id, func) | The item has been selected. |
EVT_LIST_ITEM_DESELECTED(id, func) | The item has been deselected. |
EVT_LIST_ITEM_ACTIVATED(id, func) | The item has been activated (ENTER or double click). |
EVT_LIST_ITEM_FOCUSED(id, func) | The currently focused item has changed. |
EVT_LIST_ITEM_MIDDLE_CLICK(id, func) | The middle mouse button has been clicked on an item. |
EVT_LIST_ITEM_RIGHT_CLICK(id, func) | The right mouse button has been clicked on an item. |
EVT_LIST_KEY_DOWN(id, func) | A key has been pressed. |
EVT_LIST_INSERT_ITEM(id, func) | An item has been inserted. |
EVT_LIST_COL_CLICK(id, func) | A column (m_col) has been left-clicked. |
EVT_LIST_COL_RIGHT_CLICK(id, func) | A column (m_col) has been right-clicked. |
EVT_LIST_COL_BEGIN_DRAG(id, func) | The user started resizing a column - can be vetoed. |
EVT_LIST_COL_DRAGGING(id, func) | The divider between columns is being dragged. |
EVT_LIST_COL_END_DRAG(id, func) | A column has been resized by the user. |
EVT_LIST_CACHE_HINT(id, func) | Prepare cache for a virtual list control |
See also
wxListCtrl overview, wxListBox, wxTreeCtrl, wxImageList, wxListEvent, wxListItem
Default constructor.
Constructor, creating and showing a list control.
Parameters
See also
wxListCtrl::Create, wxValidator
Destructor, destroying the list control.
Arranges the items in icon or small icon view. This only has effect on Win32. flag is one of:
wxLIST_ALIGN_DEFAULT | Default alignment. |
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wxLIST_ALIGN_LEFT | Align to the left side of the control. |
wxLIST_ALIGN_TOP | Align to the top side of the control. |
wxLIST_ALIGN_SNAP_TO_GRID | Snap to grid. |
Sets the image list associated with the control and takes ownership of it (i.e. the control will, unlike when using SetImageList, delete the list when destroyed). which is one of wxIMAGE_LIST_NORMAL, wxIMAGE_LIST_SMALL, wxIMAGE_LIST_STATE (the last is unimplemented).
See also
Deletes all items and all columns.
Creates the list control. See wxListCtrl::wxListCtrl for further details.
Deletes all the items in the list control.
NB: This function does not send the wxEVT_COMMAND_LIST_DELETE_ITEM event because deleting many items from the control would be too slow then (unlike DeleteItem).
Deletes a column.
Deletes the specified item. This function sends the wxEVT_COMMAND_LIST_DELETE_ITEM event for the item being deleted.
See also: DeleteAllItems
Starts editing the label of the given item. This function generates a EVT_LIST_BEGIN_LABEL_EDIT event which can be vetoed so that no text control will appear for in-place editing.
If the user changed the label (i.e. s/he does not press ESC or leave the text control without changes, a EVT_LIST_END_LABEL_EDIT event will be sent which can be vetoed as well.
Ensures this item is visible.
Find an item whose label matches this string, starting from start or the beginning if start is -1.
Find an item whose data matches this data, starting from start or the beginning if 'start' is -1.
Find an item nearest this position in the specified direction, starting from start or the beginning if start is -1.
wxPython での注意点: In place of a single overloaded method name, wxPython implements the following methods:
2cm
FindItem(start, str, partial=false) | |
FindItemData(start, data) | |
FindItemAtPos(start, point, direction) |
wxPerl での注意点: In wxPerl there are three methods instead of a single overloaded method:
2cm
FindItem( start, str, partial = false ) | |
FindItemData( start, data ) | |
FindItemAtPos( start, point, direction ) |
bool GetColumn(int col, wxListItem& item) const
Gets information about this column. See wxListCtrl::SetItem for more information.
wxPerl での注意点: In wxPerl this method takes only the col parameter and returns a Wx::ListItem ( or undef ).
int GetColumnCount(void) const
Returns the number of columns.
int GetColumnWidth(int col) const
Gets the column width (report view only).
int GetCountPerPage(void) const
Gets the number of items that can fit vertically in the visible area of the list control (list or report view) or the total number of items in the list control (icon or small icon view).
wxTextCtrl * GetEditControl(void) const
Returns the edit control being currently used to edit a label. Returns NULL if no label is being edited.
NB: It is currently only implemented for wxMSW.
wxImageList* GetImageList(int which) const
Returns the specified image list. which may be one of:
wxIMAGE_LIST_NORMAL | The normal (large icon) image list. |
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wxIMAGE_LIST_SMALL | The small icon image list. |
wxIMAGE_LIST_STATE | The user-defined state image list (unimplemented). |
bool GetItem(wxListItem& info) const
Gets information about the item. See wxListCtrl::SetItem for more information.
You must call info.SetId() to the ID of item you're interested in before calling this method.
wxPython での注意点: The wxPython version of this method takes an integer parameter for the item ID, an optional integer for the column number, and returns the wxListItem object.
wxPerl での注意点: In wxPerl this method takes as parameter the ID of the item and ( optionally ) the column, and returns a Wx::ListItem object.
wxColour GetItemBackgroundColour(long item) const
Returns the colour for this item. If the item has no specific colour, returns an invalid colour (and not the default background control of the control itself).
See also
Returns the number of items in the list control.
long GetItemData(long item) const
Gets the application-defined data associated with this item.
bool GetItemPosition(long item, wxPoint& pos) const
Returns the position of the item, in icon or small icon view.
wxPython での注意点: The wxPython version of this method accepts only the item ID and returns the wxPoint.
wxPerl での注意点: In wxPerl this method takes only the item parameter and returns a Wx::Point ( or undef ).
bool GetItemRect(long item, wxRect& rect, int code = wxLIST_RECT_BOUNDS) const
Returns the rectangle representing the item's size and position, in client coordinates.
code is one of wxLIST_RECT_BOUNDS, wxLIST_RECT_ICON, wxLIST_RECT_LABEL.
wxPython での注意点: The wxPython version of this method accepts only the item ID and code and returns the wxRect.
wxPerl での注意点: In wxPerl this method takes only the item parameter and returns a Wx::Rect ( or undef ).
wxSize GetItemSpacing(void) const
Retrieves the spacing between icons in pixels: horizontal spacing is returned as x component of the wxSize object and the vertical spacing as its y component.
int GetItemState(long item, long stateMask) const
Gets the item state. For a list of state flags, see wxListCtrl::SetItem.
The stateMask indicates which state flags are of interest.
wxString GetItemText(long item) const
Gets the item text for this item.
wxColour GetItemTextColour(long item) const
Returns the colour for this item. If the item has no specific colour, returns an invalid colour (and not the default foreground control of the control itself as this wouldn't allow distinguishing between items having the same colour as the current control foreground and items with default colour which, hence, have always the same colour as the control).
long GetNextItem(long item, int geometry = wxLIST_NEXT_ALL, int state = wxLIST_STATE_DONTCARE) const
Searches for an item with the given geometry or state, starting from item but excluding the item itself. If item is -1, the first item that matches the specified flags will be returned.
Returns the first item with given state following item or -1 if no such item found.
This function may be used to find all selected items in the control like this:
long item = -1; for ( ;; ) { item = listctrl->GetNextItem(item, wxLIST_NEXT_ALL, wxLIST_STATE_SELECTED); if ( item == -1 ) break; // this item is selected - do whatever is needed with it wxLogMessage("Item %ld is selected."), item); }
geometry can be one of:
wxLIST_NEXT_ABOVE | Searches for an item above the specified item. |
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wxLIST_NEXT_ALL | Searches for subsequent item by index. |
wxLIST_NEXT_BELOW | Searches for an item below the specified item. |
wxLIST_NEXT_LEFT | Searches for an item to the left of the specified item. |
wxLIST_NEXT_RIGHT | Searches for an item to the right of the specified item. |
NB: this parameters is only supported by wxMSW currently and ignored on other platforms.
state can be a bitlist of the following:
wxLIST_STATE_DONTCARE | Don't care what the state is. |
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wxLIST_STATE_DROPHILITED | The item indicates it is a drop target. |
wxLIST_STATE_FOCUSED | The item has the focus. |
wxLIST_STATE_SELECTED | The item is selected. |
wxLIST_STATE_CUT | The item is selected as part of a cut and paste operation. |
int GetSelectedItemCount(void) const
Returns the number of selected items in the list control.
wxColour GetTextColour(void) const
Gets the text colour of the list control.
Gets the index of the topmost visible item when in list or report view.
wxRect GetViewRect(void) const
Returns the rectangle taken by all items in the control. In other words, if the controls client size were equal to the size of this rectangle, no scrollbars would be needed and no free space would be left.
Note that this function only works in the icon and small icon views, not in list or report views (this is a limitation of the native Win32 control).
Determines which item (if any) is at the specified point, giving details in flags. Returns index of the item or wxNOT_FOUND if no item is at the specified point. flags will be a combination of the following flags:
wxLIST_HITTEST_ABOVE | Above the client area. |
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wxLIST_HITTEST_BELOW | Below the client area. |
wxLIST_HITTEST_NOWHERE | In the client area but below the last item. |
wxLIST_HITTEST_ONITEMICON | On the bitmap associated with an item. |
wxLIST_HITTEST_ONITEMLABEL | On the label (string) associated with an item. |
wxLIST_HITTEST_ONITEMRIGHT | In the area to the right of an item. |
wxLIST_HITTEST_ONITEMSTATEICON | On the state icon for a tree view item that is in a user-defined state. |
wxLIST_HITTEST_TOLEFT | To the right of the client area. |
wxLIST_HITTEST_TORIGHT | To the left of the client area. |
wxLIST_HITTEST_ONITEM | Combination of wxLIST_HITTEST_ONITEMICON, wxLIST_HITTEST_ONITEMLABEL, wxLIST_HITTEST_ONITEMSTATEICON. |
wxPython での注意点: A tuple of values is returned in the wxPython version of this method. The first value is the item id and the second is the flags value mentioned above.
wxPerl での注意点: In wxPerl this method only takes the point parameter and returns a 2-element list ( item, flags ).
For report view mode (only), inserts a column. For more details, see wxListCtrl::SetItem.
wxPython での注意点: In place of a single overloaded method name, wxPython implements the following methods:
2cm
InsertColumn(col, heading, format=wxLIST_FORMAT_LEFT, width=-1) | Creates a column using a header string only. |
InsertColumnItem(col, item) | Creates a column using a wxListItem. |
Inserts an item, returning the index of the new item if successful, -1 otherwise.
Inserts a string item.
Inserts an image item.
Insert an image/string item.
Parameters
wxPython での注意点: In place of a single overloaded method name, wxPython implements the following methods:
2cm
InsertItem(item) | Inserts an item using a wxListItem. |
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InsertStringItem(index, label) | Inserts a string item. |
InsertImageItem(index, imageIndex) | Inserts an image item. |
InsertImageStringItem(index, label, imageIndex) | Insert an image/string item. |
wxPerl での注意点: In wxPerl there are four methods instead of a single overloaded method:
2cm
InsertItem( item ) | Inserts a Wx::ListItem |
InsertStringItem( index, label ) | Inserts a string item |
InsertImageItem( index, imageIndex ) | Inserts an image item |
InsertImageStringItem( index, label, imageIndex ) | Inserts an item with a string and an image |
This function may be overloaded in the derived class for a control with wxLC_VIRTUAL style. It should return the attribute for the for the specified item or NULL to use the default appearance parameters.
The base class version always returns NULL.
See also
This function must be overloaded in the derived class for a control with
wxLC_VIRTUAL style having an image list
(if the control doesn't have an image list, it is not necessary to overload
it). It should return the index of the items image in the controls image list
or for no image.
The base class version always returns .
See also
virtual wxString OnGetItemText(long item, long column) const
This function must be overloaded in the derived class for a control with wxLC_VIRTUAL style. It should return the string containing the text of the given column for the specified item.
See also
SetItemCount,
OnGetItemImage,
OnGetItemAttr
Redraws the given item. This is only useful for the virtual list controls as without calling this function the displayed value of the item doesn't change even when the underlying data does change.
See also
Redraws the items between itemFrom and itemTo. The starting item must be less than or equal to the ending one.
Just as RefreshItem this is only useful for virtual list controls.
Scrolls the list control. If in icon, small icon or report view mode, dx specifies the number of pixels to scroll. If in list view mode, dx specifies the number of columns to scroll. dy always specifies the number of pixels to scroll vertically.
NB: This method is currently only implemented in the Windows version.
Sets the background colour (GetBackgroundColour already implicit in wxWindow class).
Sets information about this column. See wxListCtrl::SetItem for more information.
Sets the column width.
width can be a width in pixels or wxLIST_AUTOSIZE (-1) or wxLIST_AUTOSIZE_USEHEADER (-2). wxLIST_AUTOSIZE will resize the column to the length of its longest item. wxLIST_AUTOSIZE_USEHEADER will resize the column to the length of the header (Win32) or 80 pixels (other platforms).
In small or normal icon view, col must be -1, and the column width is set for all columns.
Sets the image list associated with the control. which is one of wxIMAGE_LIST_NORMAL, wxIMAGE_LIST_SMALL, wxIMAGE_LIST_STATE (the last is unimplemented).
This method does not take ownership of the image list, you have to delete it yourself.
See also
Sets information about the item.
wxListItem is a class with the following members:
long m_mask | Indicates which fields are valid. See the list of valid mask flags below. |
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long m_itemId | The zero-based item position. |
int m_col | Zero-based column, if in report mode. |
long m_state | The state of the item. See the list of valid state flags below. |
long m_stateMask | A mask indicating which state flags are valid. See the list of valid state flags below. |
wxString m_text | The label/header text. |
int m_image | The zero-based index into an image list. |
long m_data | Application-defined data. |
int m_format | For columns only: the format. Can be wxLIST_FORMAT_LEFT, wxLIST_FORMAT_RIGHT or wxLIST_FORMAT_CENTRE. |
int m_width | For columns only: the column width. |
The m_mask member contains a bitlist specifying which of the other fields are valid. The flags are:
wxLIST_MASK_STATE | The m_state field is valid. |
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wxLIST_MASK_TEXT | The m_text field is valid. |
wxLIST_MASK_IMAGE | The m_image field is valid. |
wxLIST_MASK_DATA | The m_data field is valid. |
wxLIST_MASK_WIDTH | The m_width field is valid. |
wxLIST_MASK_FORMAT | The m_format field is valid. |
The m_stateMask and m_state members take flags from the following:
wxLIST_STATE_DONTCARE | Don't care what the state is. Win32 only. |
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wxLIST_STATE_DROPHILITED | The item is highlighted to receive a drop event. Win32 only. |
wxLIST_STATE_FOCUSED | The item has the focus. |
wxLIST_STATE_SELECTED | The item is selected. |
wxLIST_STATE_CUT | The item is in the cut state. Win32 only. |
The wxListItem object can also contain item-specific colour and font information: for this you need to call one of SetTextColour(), SetBackgroundColour() or SetFont() functions on it passing it the colour/font to use. If the colour/font is not specified, the default list control colour/font is used.
Sets a string field at a particular column.
wxPython での注意点: In place of a single overloaded method name, wxPython implements the following methods:
2cm
SetItem(item) | Sets information about the given wxListItem. |
SetStringItem(index, col, label, imageId) | Sets a string or image at a given location. |
Sets the background colour for this item. This function only works in report view.
The colour can be retrieved using GetItemBackgroundColour.
This method can only be used with virtual list controls. It is used to indicate
to the control the number of items it contains. After calling it, the main
program should be ready to handle calls to various item callbacks (such as
OnGetItemText) for all items in the range
from to count.
Associates application-defined data with this item.
Sets the image associated with the item. The image is an index into the image list associated with the list control.
Sets the unselected and selected images associated with the item. The images are indices into the image list associated with the list control. This form is deprecated: selImage is not used.
Sets the position of the item, in icon or small icon view. Windows only.
Sets the item state. For a list of state flags, see wxListCtrl::SetItem.
The stateMask indicates which state flags are valid.
Sets the item text for this item.
Sets the colour for this item. This function only works in report view.
The colour can be retrieved using GetItemTextColour.
Adds or removes a single window style.
Sets the text colour of the list control.
Sets the whole window style, deleting all items.
Call this function to sort the items in the list control. Sorting is done using the specified fnSortCallBack function. This function must have the following prototype:
int wxCALLBACK wxListCompareFunction(long item1, long item2, long sortData)
It is called each time when the two items must be compared and should return 0 if the items are equal, negative value if the first item is less than the second one and positive value if the first one is greater than the second one (the same convention as used by qsort(3)).
Parameters
Notice that the control may only be sorted on client data associated with the items, so you must use SetItemData if you want to be able to sort the items in the control.
Please see the listctrl sample for an example of using this function.
wxPython での注意点: wxPython uses the sortData parameter to pass the Python function to call, so it is not available for programmer use. Call SortItems with a reference to a callable object that expects two parameters.
wxPerl での注意点: In wxPerl the comparison function must take just two parameters; however, you may use a closure to achieve an effect similar to the SortItems third parameter.
ymasuda 平成17年11月19日