TDBText class
Displays a string value stored in a dataset field.
Declaration
TDBText = class(TCustomLabel)Inheritance
Description
TDBText is a
TCustomLabel descendant which implements a
component to display the text content in a dataset field in the manner used
for a label control. The stored field value is not editable in the control -
just like a label component.
Use the Field property to access the field definition used to
provide the value for the control.
See also
Properties
Field | public | Provides access to the field definition for the data-aware control. |
Align | published | Specifies the placement of the control on its Parent control. |
Alignment | published | Horizontal text justification in the control (left- or right-justified, or centered). |
Anchors | published | The set of anchor definitions for this control. |
AutoSize | published | Allows automatic adjustment of the size for the control, according to its content. |
BidiMode | published | Indicates whether text controls use in bi-directional reading. |
BorderSpacing | published | Determines the inner and outer border spacing for this control. |
Color | published | The background color for the control. |
Constraints | published | Contains the minimum and maximum Width and Height for the control. |
DataField | published | The name of the field, as a string (i.e. cannot be referred to as an Index). |
DataSource | published | Provides access to the content displayed in the control. |
DragCursor | published | The cursor shape shown during a drag operation. |
DragKind | published | Indicates the action performed for a drag operation: drag-and-drop or drag-and-dock. |
DragMode | published | Determines how a drag operation is started for the control. |
Enabled | published | Determines whether the control responds to mouse or keyboard input. |
FocusControl | published | The control associated with the label and its accelerator key (AccelChar). |
Font | published | The font to be used for text display in this control. |
Layout | published | Vertical alignment for control text (at the top, bottom, or center). |
OptimalFill | published | If True, the font size is adjusted for optimal fill of the available space. |
ParentBidiMode | published | Indicates whether the BiDiMode settings in the Parent control are used. |
ParentColor | published | Use the Color from the Parent control, when enabled. |
ParentFont | published | Indicates if the Font from the Parent control is used in the control. |
ParentShowHint | published | If True, the value of ShowHint for the control will be the same as the one from the Parent. Default is True. |
PopupMenu | published | A context-sensitive menu that pops up when the right mouse button is clicked over this control. |
ShowAccelChar | published | Enables or disables drawing of accelerator or shortcut keys for the label. |
ShowHint | published | Enables Hint display for the control. |
Transparent | published | Indicates whether the viewer can see through the control. |
Visible | published | Indicates if the control is displayed. |
WordWrap | published | Indicates if text is wrapped at the right edge of the control. |
Methods
Notification | protected | Handles a notification when a component is added to or removed from the control. |
WSRegisterClass | protected | Registers the class type used to create new instance of the control for the Widgetset. |
Loaded | protected | Performs actions when LCL component streaming has been completed. |
Create | public | Constructor for the class instance. |
Destroy | public | Destructor for the class instance. |
ExecuteAction | public | Implements support for standard actions in the control. |
UpdateAction | public | Updates the specified action to reflect the current state in the linked dataset. |
Events
OnClick | published | Notification handler for mouse clicks. |
OnDblClick | published | Event handler signalled when a mouse double click occurs in the control. |
OnDragDrop | published | Event handler signalled when an object is dropped onto the control. |
OnDragOver | published | Event handler signalled when a control is dragged over the control instance. |
OnEndDrag | published | Event handler signalled for the end of a drag-drop operation. |
OnMouseDown | published | Event handler signalled when a mouse down event is handled for the control. |
OnMouseEnter | published | Event handler signalled when the mouse pointer has entered the control. |
OnMouseLeave | published | Event handler signalled when the mouse pointer has left the control. |
OnMouseMove | published | Event handler signalled when the mouse pointer is moved in the control. |
OnMouseUp | published | Event handler signalled when a mouse up event is handled for the control. |
OnMouseWheel | published | Event handler for mouse wheel turned. |
OnMouseWheelDown | published | Event handler signalled for a downward movement of the mouse wheel. |
OnMouseWheelUp | published | Event handler signalled for an upward movement of the mouse wheel. |
OnChangeBounds | published | Event handler signalled when the Bounds for the control have been changed. |
OnContextPopup | published | Invoked when a context-sensitive pop-up menu is requested. |
OnResize | published | Notification handler for a resize of the control. |
OnStartDrag | published | Event handler signalled for the start of a dragging operation. |
Inherited
From TCustomLabel (28)
AdjustFontForOptimalFill CalcFittingFontHeight CalculatePreferredSize CalculateSize CalcWordWrapLength CanTab DialogChar DoAutoAdjustLayout DoAutoSize DoDrawText DoSetBounds FontChanged GetControlClassDefaultSize GetLabelText GetTransparent HasMultiLine Paint SetAlign SetBounds SetFocusControl SetLayout SetShowAccelChar SetTransparent SetWordWrap TextChanged UpdateSize WMActivate WordWrapLength
From TGraphicControl (5)
Canvas CMCursorChanged DoOnChangeBounds DoOnParentHandleDestruction OnPaint
From TControl (363)
AccessibleDescription AccessibleName AccessibleRole AccessibleValue Action ActionChange ActionLink ActiveDefaultControlChanged AddHandler AddHandlerOnBeforeDestruction AddHandlerOnChangeBounds AddHandlerOnEnabledChanged AddHandlerOnEnabledChanging AddHandlerOnKeyDown AddHandlerOnMouseWheel AddHandlerOnResize AddHandlerOnVisibleChanged AddHandlerOnVisibleChanging AdjustSize AnchorAsAlign AnchorClient AnchoredControlCount AnchoredControls AnchorHorizontalCenterTo AnchorParallel AnchorSame AnchorSide AnchorSideBottom AnchorSideChanged AnchorSideLeft AnchorSideRight AnchorSideTop AnchorToCompanion AnchorToNeighbour AnchorVerticalCenterTo AssignTo AutoAdjustLayout AutoSizeDelayed AutoSizeDelayedHandle AutoSizeDelayedReport AutoSizePhases AutoSizing AutoSizingAll AutoSizingLockCount BaseBounds BaseParentClientSize BeforeDestruction BeforeDragStart BeginAutoDrag BeginAutoSizing BeginDrag BoundsChanged BoundsRect BoundsRectForNewParent BringToFront CalculateDockSizes CanAutoSize Caption CaptureChanged CaptureMouseButtons ChangeBounds Changed ChangeScale CheckChildClassAllowed CheckNewParent CheckOnChangeBounds ChildClassAllowed Click ClientHeight ClientOrigin ClientRect ClientToParent ClientToScreen ClientWidth CMBiDiModeChanged CMChanged CMEnabledChanged CMHintShow CMHitTest CMMouseEnter CMMouseLeave CMParentBiDiModeChanged CMParentColorChanged CMParentFontChanged CMParentShowHintChanged CMSysFontChanged CMTextChanged CMVisibleChanged CNPreferredSizeChanged ColorIsStored ConstrainedResize ControlFontClass ControlOrigin ControlState ControlStyle ControlToScreen CreateAccessibleObject CreateControlBorderSpacing CreateFloatingDockSite Cursor DblClick DefineProperties DesktopFont DisableAutoSizing DoAllAutoSize DoBorderSpacingChange DoCallKeyEventHandler DoCallMouseWheelEventHandler DoCallNotifyHandler Dock Docked DockOrientation DockTrackNoTarget DoConstraintsChange DoContextPopup DoDock DoDragMsg DoEndDock DoEndDrag DoFixDesignFontPPI DoFloatMsg DoMouseDown DoMouseUp DoMouseWheel DoMouseWheelDown DoMouseWheelHorz DoMouseWheelLeft DoMouseWheelRight DoMouseWheelUp DoOnResize DoOnShowHint DoScaleFontPPI DoStartDock DoStartDrag DragCanceled DragDrop Dragging DragOver EditingDone EnableAutoSizing EnabledChanged EnabledChanging EndAutoSizing EndDrag ExecuteCancelAction ExecuteDefaultAction FindSubComponent FixDesignFontsPPI Floating FloatingDockSiteClass ForeignAnchorSideChanged FormEndUpdated FormIsUpdating GetAccessibleObject GetAction GetActionLinkClass GetAnchorsDependingOnParent GetCachedText GetCanvasScaleFactor GetChildAccessibleObjectAtPos GetChildrenRect GetClientOrigin GetClientRect GetClientScrollOffset GetColorResolvingParent GetControlOrigin GetCursor GetDefaultColor GetDefaultDockCaption GetDefaultHeight GetDefaultWidth GetDeviceContext GetDockEdge GetDragImages GetEnabled GetFloating GetFloatingDockSiteClass GetLogicalClientRect GetMouseCapture GetMousePosFromMessage GetPalette GetParentBackground GetParentComponent GetPopupMenu GetPreferredSize GetRGBColorResolvingParent GetScrolledClientRect GetSelectedChildAccessibleObject GetSidePosition GetTextBuf GetTextLen GetTopParent HandleObjectShouldBeVisible HasHelp HasParent Height HeightIsAnchored HelpContext HelpKeyword HelpType Hide Hint HostDockSite InitiateAction Invalidate InvalidateControl InvalidatePreferredSize IsAParentAligning IsBorderSpacingInnerBorderStored IsCaptionStored IsClientHeightStored IsClientWidthStored IsControl IsControlVisible IsEnabled IsParentColor IsParentFont IsParentOf IsProcessingPaintMsg IsRightToLeft IsVisible Left LMCaptureChanged LoadedAll LRDockWidth ManualDock ManualFloat MouseCapture MouseDown MouseEnter MouseInClient MouseLeave MouseMove MouseUp OnConstrainedResize OnEditingDone OnEndDock OnMouseWheelHorz OnMouseWheelLeft OnMouseWheelRight OnQuadClick OnShowHint OnStartDock OnTripleClick Parent ParentBackground ParentDestroyingHandle ParentFontChanged ParentFormHandleInitialized ParentHandlesAllocated ParentToClient Perform PositionDockRect QuadClick ReadBounds ReadState RealGetText RealSetText Refresh RemoveAllHandlersOfObject RemoveHandler RemoveHandlerOnBeforeDestruction RemoveHandlerOnChangeBounds RemoveHandlerOnEnabledChanged RemoveHandlerOnEnabledChanging RemoveHandlerOnKeyDown RemoveHandlerOnMouseWheel RemoveHandlerOnResize RemoveHandlerOnVisibleChanged RemoveHandlerOnVisibleChanging Repaint ReplaceDockedControl RequestAlign Resize Scale96ToFont Scale96ToForm Scale96ToScreen ScaleConstraints ScaleDesignToForm ScaleFontsPPI ScaleFontTo96 ScaleFontToScreen ScaleFormTo96 ScaleFormToDesign ScaleScreenTo96 ScaleScreenToFont ScreenToClient ScreenToControl SendMoveSizeMessages SendToBack SessionProperties SetAction SetAnchors SetAutoSize SetBiDiMode SetBoundsKeepBase SetColor SetCursor SetDragMode SetEnabled SetHint SetInitialBounds SetName SetParent SetParentBackground SetParentBiDiMode SetParentComponent SetTempCursor SetTextBuf SetVisible SetZOrder ShouldAutoAdjust Show ShowHelp TBDockHeight Text Top TripleClick UndockHeight UndockWidth Update UpdateAnchorRules UpdateBaseBounds UpdateMouseCursor UpdateRolesForForm UseRightToLeftAlignment UseRightToLeftReading UseRightToLeftScrollBar VisibleChanged VisibleChanging Width WidthIsAnchored WindowProc WMCancelMode WMContextMenu WMLButtonDBLCLK WMLButtonDown WMLButtonQuadCLK WMLButtonTripleCLK WMLButtonUp WMMButtonDBLCLK WMMButtonDown WMMButtonQuadCLK WMMButtonTripleCLK WMMButtonUp WMMouseHWheel WMMouseMove WMMouseWheel WMMove WMRButtonDBLCLK WMRButtonDown WMRButtonQuadCLK WMRButtonTripleCLK WMRButtonUp WMSize WMWindowPosChanged WMXButtonDBLCLK WMXButtonDown WMXButtonQuadCLK WMXButtonTripleCLK WMXButtonUp WndProc WriteLayoutDebugReport
From TLCLComponent (6)
DecLCLRefCount GetWSComponentClass IncLCLRefCount LCLRefCount NewInstance WidgetSetClass
From TComponent (63)
_AddRef _Release CanObserve ChangeName ComObject ComponentCount ComponentIndex Components ComponentState ComponentStyle DesignInfo DestroyComponents Destroying FindComponent FreeNotification FreeOnRelease GetChildOwner GetChildParent GetChildren GetDeltaStreams GetEnumerator GetIDsOfNames GetNamePath GetObservers GetOwner GetTypeInfo GetTypeInfoCount iicrGetComponent InsertComponent Invoke IsImplementorOf Loading Name ObserverAdded Observers OnGetDeltaStreams Owner PaletteCreated QueryInterface ReadDeltaState ReadDeltaStream ReferenceInterface RemoveComponent RemoveFreeNotification RemoveFreeNotifications SafeCallException SetAncestor SetChildOrder SetDesigning SetDesignInstance SetInline SetSubComponent Tag ToString TToStringNameMode Updated UpdateRegistry Updating ValidateContainer ValidateInsert ValidateRename VCLComObject WriteState
From TPersistent (4)
Assign FPOAttachObserver FPODetachObserver FPONotifyObservers
From TObject (36)
AfterConstruction CheckDisposed ClassInfo ClassName ClassNameIs ClassParent ClassType CleanupInstance DefaultHandler DefaultHandlerStr Dispatch DispatchStr Disposed DisposeOf Equals FieldAddress Free FreeInstance GetDisposed GetHashCode GetInterface GetInterfaceByStr GetInterfaceEntry GetInterfaceEntryByStr GetInterfaceTable GetInterfaceWeak GetLastCastErrorInfo InheritsFrom InitInstance InstanceSize MethodAddress MethodName QualifiedClassName StringMessageTable SystemHasExtendedRTTI UnitName
An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.
