Vcl.Controls.TControl Methods

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InheritedProtected

_AddRef	protected	Called when an application uses a component interface.
_Release	protected	Called when an application releases a component interface.
ActionChange	protected	Responds when the action associated with the control changes.
AdjustSize	protected	Sets the size of the control as determined by the AutoSize property.
AfterConstruction	public	Responds after the last constructor has executed.
Assign	public	Copies the contents of another similar object.
AssignTo	protected	Overrides the inherited AssignTo function to enable assignments to TAction objects.
AsyncSchedule	protected
BeforeDestruction	public	Performs any necessary actions before the first destructor is called.
BeginAutoDrag	protected	Begins automatic drag.
BeginDrag	public	Starts the dragging of a control.
BeginInvoke	public	Performs an asynchronous call to the method specified by either AProc or AFunc.
BringToFront	public	Puts the control in front of all other controls in its parent control.
CalcCursorPos	protected	Gives the coordinates of the cursor, with respect to the origin of the control.
CanAutoSize	protected	Indicates whether the control can resize itself automatically to accommodate its contents.
CanObserve	protected
CanResize	protected	OnCanResize event dispatcher.
Changed	protected	Sends a CM_CHANGED message to the control.
ChangeName	protected	Sets the private, internal storage for the Name property to the string passed in NewName.
ChangeScale	protected	Rescaling event dispatcher.
CheckDisposed	protected
ClassInfo	public	Returns a pointer to the run-time type information (RTTI) table for the object type.
ClassName	public	Returns a string indicating the type of the object instance (as opposed to the type of the variable passed as an argument).
ClassNameIs	public	Determines whether an object is of a specific type.
ClassParent	public	Returns the type of the immediate ancestor of a class.
ClassType	public	Returns the class reference for the object's class.
CleanupInstance	public	Performs finalization on long strings, variants, and interface variables within a class.
Click	protected	Respond to user click.
ClientToParent	public	Translates client coordinates to parent coordinates.
ClientToScreen	public	Translates a given point from client area coordinates to global screen coordinates.
ConstrainedResize	protected	Notify control of resize with constraints.
Create	public	Creates an instance of TControl.
CreateTouchManager	protected	Instantiates a touch manager.
DblClick	protected	OnDblClick event dispatcher.
DefaultDockImage	protected	Handles the painting and erasing of a dock image.
DefaultHandler	public	Provides message handling for all messages that do not have specific handlers.
DefaultScalingFlags	protected
DefineProperties	protected	Provides methods to read and write the IsControl property to a stream such as a form file.
DesignWndProc	protected	Processes the given message and returns some Boolean information based on the message's content.
Destroy	public	Destroys an instance of TControl.
DestroyComponents	public	Destroys all owned components.
Destroying	public	Indicates that the component and its owned components are about to be destroyed.
Dispatch	public	Calls message-handling methods for the object, based on the contents of the Message parameter.
DisposeOf	public	DisposeOf forces the execution of the destructor code in an object.
Dock	public	Used internally to dock the control.
DockTrackNoTarget	protected	Handles dragging of the control over an invalid docking target.
DoContextPopup	protected	Is an OnContextPopup event dispatcher.
DoDock	protected	Docking event dispatcher.
DoEndDock	protected	Is an OnEndDock event dispatcher.
DoEndDrag	protected	Is an OnEndDrag event dispatcher.
DoGesture	protected	Processes the unhandled gesturing events.
DoGetGestureOptions	protected	Returns the interactive gestures and their options.
DoMouseWheel	protected	Processes mouse wheel motion.
DoMouseWheelDown	protected	Is an OnMouseWheelDown event dispatcher.
DoMouseWheelUp	protected	Is an OnMouseWheelUp event dispatcher.
DoStartDock	protected	Is an OnStartDockevent dispatcher.
DoStartDrag	protected	Is an OnStartDrag event dispatcher.
DragCanceled	protected	Provides the interface for a method that responds to the cancellation of a drag.
DragDrop	public	Is an OnDragDrop event dispatcher.
Dragging	public	Indicates whether a control is being dragged.
DragOver	protected	Is an OnDragOver event dispatcher.
DrawDragDockImage	protected	Draws the dock image for the control.
DrawTextBiDiModeFlags	public	Returns the text flags that reflect the current setting of the BiDiMode property.
DrawTextBiDiModeFlagsReadingOnly	public	Returns the text flag to add that indicates whether the control's text should read from right to left.
EndDrag	public	Stops a control from being dragged any further.
EndFunctionInvoke	public	Blocks the caller until the specified ASyncResult completes.
EndInvoke	public	Blocks the caller until the specified ASyncResult completes.
Equals	public	Checks whether the current instance and the Obj parameter are equal.
EraseDragDockImage	protected	Erases the dock image for the control.
ExecuteAction	public	Executes an action.
FieldAddress	public	Returns the address of a published object field.
FindComponent	public	Indicates whether a given component is owned by the component.
Free	public	Destroys an object and frees its associated memory, if necessary.
FreeInstance	public	Deallocates memory allocated by a previous call to the NewInstance method.
FreeNotification	public	Ensures that AComponent is notified that the component is going to be destroyed.
FreeOnRelease	public	Frees the interface reference for components that were created from COM classes.
GetAction	protected	Returns the value of the Action property.
GetActionLinkClass	protected	Returns the appropriate action link class that is associated with the control class.
GetAllocatedWindowHandle	protected
GetChildOwner	protected	Returns the owner of a child component being read from a stream.
GetChildParent	protected	Returns the parent or, if there is no parent, returns the owner of a child component being read from a stream.
GetChildren	protected	Enumerates all child components.
GetClientOrigin	protected	Returns the screen coordinates of the upper-left corner of the control's client area.
GetClientRect	protected	Returns a rectangle defining the client area of the control.
GetControlsAlignment	public	Indicates how text is aligned within the control.
GetCurrentPPI	protected
GetDeltaStreams	protected
GetDesignDpi	protected	Obtains the design Dpi for the form where the control was designed.
GetDeviceContext	protected	Returns a device context for the control.
GetDisposed	protected	Getter for the Disposed property.
GetDockEdge	protected	Returns the edge on which another control should be docked when it is dragged over the control.
GetDragImages	protected	Returns the control's image list containing the image to be displayed while dragging.
GetDragMode	protected	Returns the value of the DragMode property.
GetEnabled	protected	Returns the value of the Enabled property.
GetEnumerator	public	Returns a TComponent enumerator.
GetFloating	protected	Returns the value of the Floating property.
GetFloatingDockSiteClass	protected	Returns the class used for the control when it is floating.
GetHashCode	public	Returns an integer containing the hash code.
GetIDsOfNames	protected	Maps a single member and an optional set of argument names to a corresponding set of integer dispatch identifiers (dispIDs).
GetInterface	public	Retrieves a specified interface.
GetInterfaceEntry	public	Returns the entry for a specific interface implemented in a class.
GetInterfaceTable	public	Returns a pointer to a structure containing all of the interfaces implemented by a given class.
GetNamePath	public	Returns a string used by the Object Inspector.
GetObservers	protected	Getter of Observers.
GetOwner	protected	Returns the owner of a component.
GetPalette	protected	Returns the handle to a palette for use by the control.
GetParentComponent	public	Returns the parent of the control.
GetParentCurrentDpi	protected	Obtains the current Dpi for parent control, or the current control Dpi if there is no parent.
GetPopupMenu	protected	Returns the pop-up menu associated with the control.
GetStyleName	public
GetSystemMetrics	public
GetTextBuf	public	Retrieves the control's text, copies it into a buffer, and returns the number of characters copied.
GetTextLen	public	Returns the length of the control's text.
GetTypeInfo	protected	Retrieves the type information for an object.
GetTypeInfoCount	protected	Returns the number of type information interfaces that an object provides (either 0 or 1).
HasParent	public	Indicates whether the control has a parent.
Hide	public	Makes the control invisible.
InheritsFrom	public	Determines the relationship of two object types.
InitiateAction	public	Calls the action link's Update method if the control is associated with an action link.
InitInstance	public	Initializes a newly allocated object instance to all zeros and initializes the instance's virtual method table pointer.
InsertComponent	public	Establishes the component as the owner of a specified component.
InstanceSize	public	Returns the size in bytes of each instance of the object type.
Invalidate	public	Completely repaints the control.
Invoke	protected	Provides access to Automation properties and methods when the component wraps an Automation object.
IsCustomStyleActive	public
IsImplementorOf	public	Indicates whether the component implements a specified interface.
IsLightStyleColor	public
IsRightToLeft	public	Indicates whether the control should be reversed right to left.
IsTouchPropertyStored	protected	Checks whether the associated touch manager stored any of the given options.
Loaded	protected	Initializes the control after it is loaded from a stream.
ManualDock	public	Docks the control.
ManualFloat	public	Undocks the control.
MethodAddress	public	Returns the address of a class method by name.
MethodName	public	Returns the name of a class method by address.
MouseActivate	protected	Triggers a TMouseActivateEvent event.
MouseDown	protected	OnMouseDown event dispatcher.
MouseMove	protected	Responds to mouse moving over control area.
MouseUp	protected	Is an OnMouseUp event dispatcher.
MouseWheelHandler	public	Dispatches messages received from a mouse wheel.
NewInstance	public	Allocates memory for an instance of an object type and returns a pointer to that new instance.
Notification	protected	Responds to notifications indicating that components are being created or destroyed.
ObserverAdded	protected
operator ()	public	C++ conversion of a TComponent into a System.Classes.IInterfaceComponentReference or a System.IInterface, depending on casting.
PaletteChanged	protected	Responds to changes in the system's palette by realizing the control's palette.
PaletteCreated	protected	Responds when the component is created from the component palette.
ParentToClient	public	Translate parent coordinates to client coordinates.
Perform	public	Responds as if the control received a specified Windows message.
PositionDockRect	protected	Positions the docking rectangle according to the current drag-and-dock state.
QualifiedClassName	public	Returns the qualified name of the class.
QueryInterface	protected	Returns a reference to a specified interface if the current component supports that interface.
ReadState	protected	Prepares the control for having its properties assigned values read from a stream.
ReferenceInterface	public	Establishes or removes internal links that cause this component to be notified when the implementer of a specified interface is destroyed.
Refresh	public	Repaints the control on the screen.
RemoveComponent	public	Removes a specified component specified from the component's Components list.
RemoveFreeNotification	public	Disables the destruction notification that was enabled by FreeNotification.
RemoveFreeNotifications	protected	Notifies all owned components of the owner component's imminent destruction.
Repaint	public	Forces the control to repaint its image on the screen.
ReplaceDockedControl	public	Docks the control in the place where another control is already docked.
RequestAlign	protected	Instructs the parent of a control to reposition the control, enforcing its Align property.
Resize	protected	Respond to control resize.
SafeCallException	public	Handles exceptions in methods declared using the safecall calling convention.
ScaleConstraints	protected	Scales the values of the Constraints property to the given ratio.
ScaleForPPI	public	Adjusts the scaling of the current control for the specified Pixels Per Inch (PPI).
ScaleMargins	protected	Scales the values of the Margins property to the given ratio.
ScaleRectSize	public
ScaleValue	public
ScreenToClient	public	Converts the screen coordinates of a specified point on the screen to client coordinates.
SendCancelMode	protected	Cancels the modal state of the control.
SendDockNotification	protected	Sends a Windows message to the control's host dock site.
SendToBack	public	Puts a windowed control behind all other windowed controls, or puts a non-windowed control behind all other non-windowed controls.
SetAncestor	protected	Clears or sets csAncestor state in the component's ComponentState property.
SetAutoSize	protected	Sets the value of the AutoSize property.
SetBiDiMode	protected	Sets the control's bidirectional mode.
SetBounds	public	Sets the Left, Top, Width, and Height properties all at once.
SetChildOrder	protected	Sets the visual ordering of a child control.
SetCustomHint	protected	Sets the value of the CustomHint property.
SetDesigning	protected	Ensures that components inserted at design time have their design-mode flag set.
SetDesignInstance	protected	Ensures that components inserted at design time have their design-mode flag set.
SetDesignVisible	public	Makes a control visible at design time.
SetDragMode	protected	Sets the drag mode for the control.
SetEnabled	protected	Sets the value of the Enabled property.
SetInline	protected	Sets the csInline bit of the component's ComponentState property.
SetName	protected	Sets the name of the control.
SetParent	protected	Sets the parent of the control.
SetParentBiDiMode	protected	Specifies whether the control uses its parent's BiDiMode.
SetParentComponent	public	Sets the parent for the control.
SetStyleElements	protected
SetStyleName	protected
SetSubComponent	public	Identifies whether the component is a subcomponent.
SetTextBuf	public	Sets the text of the control.
SetZOrder	protected	Repositions the control in its parent's control list, thereby changing position onscreen.
Show	public	Makes a control visible.
ToString	public	Returns a string containing the class name.
UnitName	public	Returns the name of the unit where the class is defined.
UnitScope	public	Returns the class's unit scope.
Update	public	Processes any pending paint messages immediately.
UpdateAction	public	Updates the state of an action.
UpdateBoundsRect	protected	Changes the Top, Left, Width, and Height properties of the control, but does not update its screen image and bypasses all resize events.
Updated	protected	Clears the csUpdating state in the component's ComponentState property when the component finishes updating.
UpdateExplicitBounds	protected	Attempts to update the values of the control's explicit bounds to those of its current bounds.
UpdateRegistry	protected	Provides the interface for a method that adds type library and version information to the Registry on components that implement COM interfaces.
UpdateStyleElements	protected	Called when the StyleElements property changes.
Updating	protected	Sets the csUpdating state in the component's ComponentState property.
UseRightToLeftAlignment	public	Specifies whether the control's alignment should be reversed right-to-left.
UseRightToLeftReading	public	Specifies whether the control is using a right-to-left reading order.
UseRightToLeftScrollBar	public	Specifies whether the vertical scroll bar appears on the left side of the control.
ValidateContainer	protected	Determines whether an object can be inserted into a container.
ValidateInsert	protected	Provides the interface for a method that validates a child component before it is inserted.
ValidateRename	protected	Ensures that renaming an owned component does not create a name conflict.
VisibleChanging	protected	Provides the interface for a method that responds to changes in the control's visibility.
WndProc	protected	Provides specific message responses for the control.
WriteState	protected	Writes the state of the component.