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TCustomBitBtn class

In unit Buttons

TCustomBitBtn - the ancestor class for TBitBtn.

Declaration

pascal
TCustomBitBtn = class(TCustomButton)

Inheritance

  1. TCustomBitBtn
  2. TCustomButton
  3. TButtonControl
  4. TWinControl
  5. TControl
  6. TLCLComponent
  7. TComponent
  8. TPersistent
  9. TObject

Descends from it: TBitBtn TPanelBitBtn

Description

TCustomBitBtn is a TCustomButton descendant, and the ancestor for TBitBtn. It provides the interface used to display a button with a glyph (or image) and a caption. It performs an action when the button is clicked.

If you want to define your own bitmap button class, you should derive it from this class.

Properties

CaptionpublicContains the descriptive text displayed for the Bitmap button control.
DefaultCaptionpublicIndicates if Caption contains the default value for the button Kind.
DisabledImageIndexpublicOrdinal position for the image displayed when the button is Disabled.
DrawEffectsEnabledpublicEnables or disables Glyph drawing effects for mouse over and mouse down events on the control.
GlyphpublicBitmap with the Glyph displayed on the control.
GlyphImageLayoutpublic
NumGlyphspublicThe number of glyph bitmaps available for the control.
HotImageIndexpublicOrdinal position for the bitmap displayed when the button control is hot (hovered).
ImagespublicContains the list of images available for use as the glyph on a custom button control.
ImageIndexpublicOrdinal position for the default bitmap displayed when the button control is up (not pressed).
ImageWidthpublicWidth for the value in Images displayed on the button control.
KindpublicSpecifies the button kind including the default bitmap and caption for the button control.
LayoutpublicLayout or alignment for the glyph bitmap and caption on the control.
MarginpublicThe space prior to the glyph bitmap on the aligned edge of the button layout.
PressedImageIndexpublicOrdinal position for the bitmap displayed when the button control is pressed (down).
SpacingpublicThe space reserved between the bitmap and the caption on the button control.
GlyphShowModepublicIndicates the policy for showing or hiding the glyph image for the button.

Methods

WSRegisterClassprotectedRegisters this component class with the current WidgetSet.
ActionChangeprotectedPerforms action when a new value is assigned to the Action property for the control.
GlyphChangedprotectedPerforms actions needed when the value in Glyph has been changed.
InitializeWndprotectedCopies cached control properties to the newly created widget.
IsCaptionStoredprotectedGets the storage specifier for the Caption property.
LoadedprotectedPerforms actions needed when the component has been loaded using LCL component streaming.
NotificationprotectedPerforms actions needed when a sub-component is added or removed in the class instance.
TextChangedprotectedPerforms actions needed when the CM_TEXTCHANGED control message is handled for the control.
GetControlClassDefaultSizeprotectedReturns the default dimensions for new instances of the class.
CMAppShowBtnGlyphChangedprotectedHandles the CM_APPSHOWBTNGLYPHCHANGED message for the control.
CreatepublicConstructor for the class instance.
DestroypublicDestructor for the class instance.
ClickpublicPerforms actions needed when the button is clicked.
LoadGlyphFromResourceNamepublicLoads the Glyph image with the specified named from a resource instance.
LoadGlyphFromLazarusResourcepublicLoads a glyph image from the Lazarus resource file (.lrs).
LoadGlyphFromStockpublicLoads a stock glyph image for the specified button identifier.
LoadGlyphFromResourcepublicLoads the glyph image for the specified button identifier from the internal LCL resource.
CanShowGlyphpublicIndicates if the Glyph for the button can be displayed.

Fields

FButtonGlyphprotectedAn internal member which contains the TButtonGlyph instance for the control.

Inherited

From TCustomButton (23)

Active ActiveDefaultControlChanged Cancel ChildClassAllowed Color ControlKeyDown ControlKeyUp CreateParams CreateWnd Default DialogChar ExecuteCancelAction ExecuteDefaultAction ModalResult ParentColor ShortCut ShortCutKey2 TabStop UpdateDefaultCancel UpdateRolesForForm UseRightToLeftAlignment WSSetDefault WSSetText

From TButtonControl (7)

Checked ClicksDisabled DoOnChange GetActionLinkClass GetChecked OnChange SetChecked

From TWinControl (233)

AddControl AdjustClientRect AlignControls AllAutoSized AutoAdjustLayout AutoSizeDelayed AutoSizeDelayedHandle AutoSizeDelayedReport AutoSizePhases BeginUpdateBounds BorderStyle BorderWidth BoundsLockCount BroadCast Brush BrushCreated CachedClientHeight CachedClientWidth CalculatePreferredSize CanFocus CanSetFocus CanTab ChangeScale ChildHandlesCreated ChildKey ChildSizing ClientRectNeedsInterfaceUpdate CMBiDiModeChanged CMBorderChanged CMDoubleBufferedChanged CMEnabledChanged CMEnter CMExit CMParentDoubleBufferedChanged CMShowHintChanged CMShowingChanged CMVisibleChanged CNChar CNKeyDown CNKeyUp CNSysKeyDown CNSysKeyUp ContainsControl ControlAtPos ControlCount Controls ControlsAligned CreateBrush CreateDockManager CreateHandle CreateParented CreateParentedControl CreateSubClass CustomAlignInsertBefore CustomAlignPosition DefaultHandler DefWndProc DesignerDeleting DestroyHandle DestroyWnd DisableAlign DoAddDockClient DoAdjustClientRectChange DoAlignChildControls DoAllAutoSize DoAutoSize DoChildSizingChange DockClientCount DockClients DockDrop DockManager DockOver DockSite DoConstraintsChange DoDockClientMsg DoDockOver DoDragMsg DoEnter DoExit DoFlipChildren DoFloatMsg DoGetDockCaption DoKeyDownBeforeInterface DoKeyPress DoKeyUpBeforeInterface DoRemainingKeyDown DoRemainingKeyUp DoRemoveDockClient DoSendBoundsToInterface DoSendShowHideToInterface DoSetBounds DoubleBuffered DoUnDock DoUndockClientMsg DoUTF8KeyPress EnableAlign EndUpdateBounds EraseBackground FinalizeWnd FindChildControl FindNextControl FixDesignFontsPPIWithChildren FixupTabList FlipChildren Focused FontChanged FormEndUpdated GetAdjustedLogicalClientRect GetBorderStyle GetChildren GetChildrenRect GetClientOrigin GetClientRect GetControlIndex GetControlOrigin GetDeviceContext GetDockCaption GetEnumeratorControls GetEnumeratorControlsReverse GetMouseCapture GetParentHandle GetPreferredSizeClientFrame GetSiteInfo GetTabOrderList GetTextLen GetTopParentHandle Handle HandleAllocated HandleNeeded InsertControl IntfGetDropFilesTarget IntfUTF8KeyPress Invalidate InvalidateBoundsRealized InvalidateClientRectCache InvalidatePreferredChildSizes IsClientHeightStored IsClientWidthStored IsControlMouseMsg IsFlipped IsResizing IsSpecialSubControl KeyDown KeyDownAfterInterface KeyDownBeforeInterface KeyPress KeyUp KeyUpAfterInterface KeyUpBeforeInterface LockRealizeBounds MainWndProc NotifyControls OnAlignInsertBefore OnAlignPosition OnDockDrop OnDockOver OnEnter OnExit OnGetDockCaption OnGetSiteInfo OnKeyDown OnKeyPress OnKeyUp OnUnDock OnUTF8KeyPress PaintControls PaintHandler PaintTo PaintWindow ParentDoubleBuffered ParentFormHandleInitialized ParentHandlesAllocated ParentWindow PerformTab RealGetText ReAlign RealizeBounds RealizeBoundsRecursive RealSetText ReloadDockedControl RemoveControl RemoveFocus Repaint ScaleBy ScaleControls ScrollBy ScrollBy_WS SelectFirst SelectNext SendDialogChar SendMoveSizeMessages SetBorderStyle SetBounds SetChildZPosition SetColor SetControlIndex SetDockManager SetFocus SetShape SetTempCursor ShowControl Showing TabOrder UnlockRealizeBounds Update UpdateControlState UpdateDockCaption UpdateShowing UseDockManager UTF8KeyPress VisibleDockClientCount WindowHandle WMChar WMContextMenu WMDestroy WMEnter WMEraseBkgnd WMExit WMKeyDown WMKeyUp WMKillFocus WMMove WMNotify WMPaint WMSetFocus WMShowWindow WMSize WMSysChar WMSysKeyDown WMSysKeyUp WMWindowPosChanged WndProc WriteLayoutDebugReport

From TControl (352)

AccessibleDescription AccessibleName AccessibleRole AccessibleValue Action ActionLink AddHandler AddHandlerOnBeforeDestruction AddHandlerOnChangeBounds AddHandlerOnEnabledChanged AddHandlerOnEnabledChanging AddHandlerOnKeyDown AddHandlerOnMouseWheel AddHandlerOnResize AddHandlerOnVisibleChanged AddHandlerOnVisibleChanging AdjustSize Align AnchorAsAlign AnchorClient AnchoredControlCount AnchoredControls AnchorHorizontalCenterTo AnchorParallel Anchors AnchorSame AnchorSide AnchorSideBottom AnchorSideChanged AnchorSideLeft AnchorSideRight AnchorSideTop AnchorToCompanion AnchorToNeighbour AnchorVerticalCenterTo AssignTo AutoSize AutoSizing AutoSizingAll AutoSizingLockCount BaseBounds BaseParentClientSize BeforeDestruction BeforeDragStart BeginAutoDrag BeginAutoSizing BeginDrag BiDiMode BorderSpacing BoundsChanged BoundsRect BoundsRectForNewParent BringToFront CalculateDockSizes CanAutoSize CaptureChanged CaptureMouseButtons ChangeBounds Changed CheckChildClassAllowed CheckNewParent CheckOnChangeBounds ClientHeight ClientOrigin ClientRect ClientToParent ClientToScreen ClientWidth CMChanged CMCursorChanged CMHintShow CMHitTest CMMouseEnter CMMouseLeave CMParentBiDiModeChanged CMParentColorChanged CMParentFontChanged CMParentShowHintChanged CMSysFontChanged CMTextChanged CNPreferredSizeChanged ColorIsStored ConstrainedResize Constraints ControlFontClass ControlOrigin ControlState ControlStyle ControlToScreen CreateAccessibleObject CreateControlBorderSpacing CreateFloatingDockSite Cursor DblClick DefineProperties DesktopFont DisableAutoSizing DoAutoAdjustLayout DoBorderSpacingChange DoCallKeyEventHandler DoCallMouseWheelEventHandler DoCallNotifyHandler Dock Docked DockOrientation DockTrackNoTarget DoContextPopup DoDock DoEndDock DoEndDrag DoFixDesignFontPPI DoMouseDown DoMouseUp DoMouseWheel DoMouseWheelDown DoMouseWheelHorz DoMouseWheelLeft DoMouseWheelRight DoMouseWheelUp DoOnChangeBounds DoOnParentHandleDestruction DoOnResize DoOnShowHint DoScaleFontPPI DoStartDock DoStartDrag DragCanceled DragCursor DragDrop Dragging DragKind DragMode DragOver EditingDone EnableAutoSizing Enabled EnabledChanged EnabledChanging EndAutoSizing EndDrag FindSubComponent FixDesignFontsPPI Floating FloatingDockSiteClass Font ForeignAnchorSideChanged FormIsUpdating GetAccessibleObject GetAction GetAnchorsDependingOnParent GetCachedText GetCanvasScaleFactor GetChildAccessibleObjectAtPos GetClientScrollOffset GetColorResolvingParent GetCursor GetDefaultColor GetDefaultDockCaption GetDefaultHeight GetDefaultWidth GetDockEdge GetDragImages GetEnabled GetFloating GetFloatingDockSiteClass GetLogicalClientRect GetMousePosFromMessage GetPalette GetParentBackground GetParentComponent GetPopupMenu GetPreferredSize GetRGBColorResolvingParent GetScrolledClientRect GetSelectedChildAccessibleObject GetSidePosition GetTextBuf GetTopParent HandleObjectShouldBeVisible HasHelp HasParent Height HeightIsAnchored HelpContext HelpKeyword HelpType Hide Hint HostDockSite InitiateAction InvalidateControl InvalidatePreferredSize IsAParentAligning IsBorderSpacingInnerBorderStored IsControl IsControlVisible IsEnabled IsParentColor IsParentFont IsParentOf IsProcessingPaintMsg IsRightToLeft IsVisible Left LMCaptureChanged LoadedAll LRDockWidth ManualDock ManualFloat MouseCapture MouseDown MouseEnter MouseInClient MouseLeave MouseMove MouseUp OnChangeBounds OnClick OnConstrainedResize OnContextPopup OnDblClick OnDragDrop OnDragOver OnEditingDone OnEndDock OnEndDrag OnMouseDown OnMouseEnter OnMouseLeave OnMouseMove OnMouseUp OnMouseWheel OnMouseWheelDown OnMouseWheelHorz OnMouseWheelLeft OnMouseWheelRight OnMouseWheelUp OnQuadClick OnResize OnShowHint OnStartDock OnStartDrag OnTripleClick Parent ParentBackground ParentBiDiMode ParentDestroyingHandle ParentFont ParentFontChanged ParentShowHint ParentToClient Perform PopupMenu PositionDockRect QuadClick ReadBounds ReadState Refresh RemoveAllHandlersOfObject RemoveHandler RemoveHandlerOnBeforeDestruction RemoveHandlerOnChangeBounds RemoveHandlerOnEnabledChanged RemoveHandlerOnEnabledChanging RemoveHandlerOnKeyDown RemoveHandlerOnMouseWheel RemoveHandlerOnResize RemoveHandlerOnVisibleChanged RemoveHandlerOnVisibleChanging ReplaceDockedControl RequestAlign Resize Scale96ToFont Scale96ToForm Scale96ToScreen ScaleConstraints ScaleDesignToForm ScaleFontsPPI ScaleFontTo96 ScaleFontToScreen ScaleFormTo96 ScaleFormToDesign ScaleScreenTo96 ScaleScreenToFont ScreenToClient ScreenToControl SendToBack SessionProperties SetAction SetAlign SetAnchors SetAutoSize SetBiDiMode SetBoundsKeepBase SetCursor SetDragMode SetEnabled SetHint SetInitialBounds SetName SetParent SetParentBackground SetParentBiDiMode SetParentComponent SetTextBuf SetVisible SetZOrder ShouldAutoAdjust Show ShowHelp ShowHint TBDockHeight Text Top TripleClick UndockHeight UndockWidth UpdateAnchorRules UpdateBaseBounds UpdateMouseCursor UseRightToLeftReading UseRightToLeftScrollBar Visible VisibleChanged VisibleChanging Width WidthIsAnchored WindowProc WMCancelMode WMLButtonDBLCLK WMLButtonDown WMLButtonQuadCLK WMLButtonTripleCLK WMLButtonUp WMMButtonDBLCLK WMMButtonDown WMMButtonQuadCLK WMMButtonTripleCLK WMMButtonUp WMMouseHWheel WMMouseMove WMMouseWheel WMRButtonDBLCLK WMRButtonDown WMRButtonQuadCLK WMRButtonTripleCLK WMRButtonUp WMXButtonDBLCLK WMXButtonDown WMXButtonQuadCLK WMXButtonTripleCLK WMXButtonUp

From TLCLComponent (6)

DecLCLRefCount GetWSComponentClass IncLCLRefCount LCLRefCount NewInstance WidgetSetClass

From TComponent (64)

_AddRef _Release CanObserve ChangeName ComObject ComponentCount ComponentIndex Components ComponentState ComponentStyle DesignInfo DestroyComponents Destroying ExecuteAction FindComponent FreeNotification FreeOnRelease GetChildOwner GetChildParent 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 UpdateAction Updated UpdateRegistry Updating ValidateContainer ValidateInsert ValidateRename VCLComObject WriteState

From TPersistent (4)

Assign FPOAttachObserver FPODetachObserver FPONotifyObservers

From TObject (35)

AfterConstruction CheckDisposed ClassInfo ClassName ClassNameIs ClassParent ClassType CleanupInstance 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.