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The base class for TListBox.
Source position: stdctrls.pp line 479
type TCustomListBox = class(TWinControl) |
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protected |
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class procedure WSRegisterClass; override; |
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Registers this component class with the current WidgetSet. |
procedure AssignItemDataToCache(); virtual; |
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Copy selection state into the cache. |
procedure AssignCacheToItemData(); virtual; |
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Sends the cached selection state to the widget. |
procedure BeforeDragStart; override; |
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procedure BeginAutoDrag; override; |
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For internal use: user has started dragging the control. |
function CalculateStandardItemHeight; |
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Determine the standard Height of the items, when no widget has yet been created. |
procedure CreateParams(); override; |
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procedure InitializeWnd; override; |
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Copies the Items into the widget. |
procedure FinalizeWnd; override; |
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Caches the Items stored in the widget. |
class function GetControlClassDefaultSize; override; |
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procedure CheckIndex(); |
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Assures that the index is inside the Items list bounds. |
function GetItemHeight; |
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function GetItemIndex; virtual; |
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function GetSelCount; |
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function GetSelected(); |
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function GetCachedDataSize; virtual; |
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Returns the size of a cached item. |
function GetCachedData(); |
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Returns an pointer to the cached item data. |
procedure SetExtendedSelect(); virtual; |
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procedure SetItemIndex(); virtual; |
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procedure SetItems(); virtual; |
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procedure SetItemHeight(); |
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procedure SetMultiSelect(); virtual; |
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procedure SetSelected(); |
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procedure SetSorted(); virtual; |
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procedure SetStyle(); virtual; |
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procedure DrawItem(); virtual; |
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Paints an item in owner-draw mode. |
procedure DoSelectionChange(); virtual; |
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Invokes the OnSelectionChange handler. |
procedure SendItemIndex; |
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Sends the ItemIndex to the widget. |
public |
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constructor Create(); override; |
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destructor Destroy; override; |
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procedure AddItem(); |
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Adds an item to the list. |
procedure Click; override; |
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Invokes the OnClick and ActionLink.Execute handlers. |
procedure Clear; virtual; |
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Removes all items from the list. |
procedure ClearSelection; |
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Unselects all items. |
function GetIndexAtXY(); |
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Find the item at the given client coordinates. |
function GetIndexAtY(); |
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function GetSelectedText; |
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Get the text of all selected items in one string. |
function ItemAtPos(); |
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Get the item index for the given client coordinates. |
function ItemRect(); |
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Returns the client area of an item (including scrolling). |
function ItemVisible(); |
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Returns True if the item is at least partially visible in the scrolled list. |
function ItemFullyVisible(); |
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Returns True if the item is fully visible in the scrolled list. |
procedure LockSelectionChange; |
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Blocks selection changes during update of the widget. |
procedure MakeCurrentVisible; |
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Makes the item at ItemIndex visible, possibly scrolling the list. |
procedure MeasureItem(); virtual; |
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Request the Height of a list item, using the OnMeasureItem handler. |
procedure SelectAll; virtual; |
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Selects all items in the list (in ExtendedSelect mode). |
procedure UnlockSelectionChange; |
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Unlocks previously locked selection changes. |
property Align; |
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Specifies the placement of the control inside its Parent. |
property Anchors; |
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The set of anchor definitions for this control. |
property BorderStyle; |
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Allows to show a border (line) around the control, |
property ClickOnSelChange: Boolean; [rw] |
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Allows selection changes to generate a Click event. |
property Columns: Integer; [rw] |
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The number of visible vertical columns. |
property Constraints; |
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The minimal and maximal Width and Height of this control. |
property Count: Integer; [r] |
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The number of items in the list. |
property ExtendedSelect: Boolean; [rw] |
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True when a contiguous range of items can be selected by a SHIFT-click. Default True. |
property Font; |
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The font to be used for text display in this control. |
property IntegralHeight: Boolean; [rw] |
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Not implemented: shrink the Height of the widget, so that it only shows fully visible rows. |
property ItemHeight: Integer; [rw] |
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The default height of all items. |
property ItemIndex: Integer; [rw] |
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The currently selected item, -1 if none. |
property Items: TStrings; [rw] |
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The list of all items in the control. |
property MultiSelect: Boolean; [rw] |
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Allows to select more than one Item from the list, using CTRL-click. |
property OnChangeBounds; |
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Event handler for a change of the Bounds of the control. |
property OnClick; |
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Notification handler for mouse clicks. |
property OnDblClick; |
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Event Handler for double mouse clicks. |
property OnDrawItem: TDrawItemEvent; [rw] |
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Handler for special painting of an item (in owner-draw mode). |
property OnEnter; |
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Handler for control receiving the focus. |
property OnExit; |
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Handler for control loosing the focus. This is a good place for checking the finished user input. |
property OnKeyDown; |
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Handler for keyboard key pressed. |
property OnKeyPress; |
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Handler for a character entered by the user. |
property OnKeyUp; |
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Handler for keyboard key released. |
property OnMeasureItem: TMeasureItemEvent; [rw] |
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Handler invoked when the height of an item is required. |
property OnMouseDown; |
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Event handler for mouse button going down. |
property OnMouseMove; |
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Event handler for mouse movement within the control. |
property OnMouseUp; |
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Event handler for mouse button going up. |
property OnMouseEnter; |
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Event handler for mouse entering the area of the control. |
property OnMouseLeave; |
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Event handler for mouse leaving the area of the control. |
property OnMouseWheel; |
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Event handler for mouse wheel turned. |
property OnMouseWheelDown; |
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Notification handler for downward movement of mouse wheel. |
property OnMouseWheelUp; |
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Notification handler for upward movement of mouse wheel. |
property OnResize; |
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Notification handler for a resize of the control. |
property OnSelectionChange: TSelectionChangeEvent; [rw] |
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Handler invoked when an item is selected. |
property OnUTF8KeyPress; |
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Handler for a character entered by the user. |
property ParentColor; |
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If true, the Color of the control will be the same as the one from the Parent. Default is true. |
property ParentFont; |
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If true, the Font of the control will be the same as the one from the Parent. Default is true. |
property ParentShowHint; |
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If true, the value of ShowHint for the control will be the same as the one from the Parent. Default is true. |
property PopupMenu; |
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A context-sensitive menu that pops up when the right mouse button is clicked over this control |
property ScrollWidth: Integer; [rw] |
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The virtual width of the ListBox, in pixels. |
property SelCount: Integer; [r] |
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The number of selected iems in the list. |
property Selected: Boolean; [rw] |
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Get or set the Selected state of an item. |
property ShowHint; |
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Enables the Hint display. |
property Sorted: Boolean; [rw] |
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Determines whether the list entries are sorted. |
property Style: TListBoxStyle; [rw] |
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Appearance of the ListBox - normal, owner-draw fixed, or owner-draw variable. |
property TabOrder; |
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Determines the sequence of controls, reachable when the user presses the Tab key. |
property TabStop; |
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Allows the user to navigate to this control, by pressing the Tab key. |
property TopIndex: Integer; [rw] |
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Index of the first visible (topmost) item. |
property Visible; |
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Allows to show or hide the control, and all of its children. |
end; |
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The base class for TListBox. |
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The base class for controls which can contain other (child) controls. |
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The base class for visible controls. |
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The base class for LCL components associated with widgets. |
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TComponent |
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TObject |