TCnTrackBar Class

Represents a standard Windows track bar.

Namespace: CNClrLib.Control.TrackBar
TCustomControl
  CNClrLib.Control.Base.TClrCustomControl
    CNClrLib.Control.TrackBar.TCnTrackBar
type
 TCnTrackBar = class(TClrCustomControl)
 end;

The TCnTrackBar type exposes the following members.

Show:
 NameDescription
Create(TComponent)

Creates and initializes a TCnTrackBar instance. (Overrides TClrCustomControl.Create(TComponent).)

Destroy

Frees the resources allocated with a TCnTrackBar instance. (Overrides TClrCustomControl.Destroy.)

Top
Show:
 NameDescription
AccessibleDescription

Gets or sets the description of the control used by accessibility client applications. (Inherited from TClrCustomControl.)

AccessibleName

Gets or sets the name of the control used by accessibility client applications. (Inherited from TClrCustomControl.)

AccessibleRole

Gets or sets the accessible role of the control (Inherited from TClrCustomControl.)

Align

Determines how the control aligns within its container (parent control). (Inherited from TClrCustomControl.)

Anchors

Specifies how the control is anchored to its parent. (Inherited from TClrCustomControl.)

AutoScrollOffset

Gets or sets where this control is scrolled to in ScrollControlIntoView(Control). (Inherited from TClrCustomControl.)

AutoSize

Specifies whether the control sizes itself automatically to accommodate its contents. (Inherited from TClrCustomControl.)

BackColor

Represents property BackColor.

BackgroundImage

Gets or sets the background image displayed in the control. (Inherited from TClrCustomControl.)

BackgroundImageLayout

Gets or sets the background image layout as defined in the ImageLayout enumeration. (Inherited from TClrCustomControl.)

BindingContext

Gets or sets the BindingContext for the control. (Inherited from TClrCustomControl.)

BorderStyle

Specifies the appearance and behavior of the form border. (Inherited from TClrCustomControl.)

Bottom

Gets the distance, in pixels, between the bottom edge of the control and the top edge of its container's client area. (Inherited from TClrCustomControl.)

Bounds

Gets or sets the size and location of the control including its nonclient elements, in pixels, relative to the parent control. (Inherited from TClrCustomControl.)

CanSelect

Gets a value indicating whether the control can be selected. (Inherited from TClrCustomControl.)

Capture

Gets or sets a value indicating whether the control has captured the mouse. (Inherited from TClrCustomControl.)

CausesValidation

Gets or sets a value indicating whether the control causes validation to be performed on any controls that require validation when it receives focus. (Inherited from TClrCustomControl.)

CnDock

Gets or sets which control borders are docked to its parent control and determines how a control is resized with its parent. (Inherited from TClrCustomControl.)

CompanyName

Gets the name of the company or creator of the application containing the control. (Inherited from TClrCustomControl.)

Constraints

Specifies the size constraints for the control. (Inherited from TClrCustomControl.)

ContainsFocus

Gets a value indicating whether the control, or one of its child controls, currently has the input focus. (Inherited from TClrCustomControl.)

ControlIntf

Get .Net Control object as interface. (Inherited from TClrCustomControl.)

Controls

Gets the collection of controls contained within the control. (Inherited from TClrCustomControl.)

Created

Gets a value indicating whether the control has been created. (Inherited from TClrCustomControl.)

DataBindings

Gets the data bindings for the control. (Inherited from TClrCustomControl.)

DefaultBackColor

Gets the default background color of the control. (Inherited from TClrCustomControl.)

DefaultClrObject

Gets the common language runtime object from this control. (Inherited from TClrCustomControl.)

DefaultFont

Gets the default font of the control. (Inherited from TClrCustomControl.)

DefaultForeColor

Gets the default foreground color of the control. (Inherited from TClrCustomControl.)

DotNetHandle

Gets the window handle that the .Net control is bound to. (Inherited from TClrCustomControl.)

DragCursor

Specifies the image used to represent the mouse pointer when the control is being dragged. (Inherited from TClrCustomControl.)

DragMode

Specifies how the control initiates drag-and-drop or drag-and-dock operations. (Inherited from TClrCustomControl.)

Enabled

Gets or sets a value indicating whether the control can respond to user interaction. (Inherited from TClrCustomControl.)

Font

Gets or sets the font of the text displayed by the control. (Inherited from TClrCustomControl.)

ForeColor

Gets or sets the foreground color of the control. (Inherited from TClrCustomControl.)

HasChildren

Gets a value indicating whether the control contains one or more child controls. (Inherited from TClrCustomControl.)

IsAccessible

Gets or sets a value indicating whether the control is visible to accessibility applications. (Inherited from TClrCustomControl.)

IsHandleCreated

Gets a value indicating whether the control has a handle associated with it. (Inherited from TClrCustomControl.)

IsMirrored

Gets a value indicating whether the control is mirrored. (Inherited from TClrCustomControl.)

LargeChange

Gets or sets a value to be added to or subtracted from the Value property when the scroll box is moved a large distance.

Location

Gets or sets the coordinates of the upper-left corner of the control relative to the upper-left corner of its container. (Inherited from TClrCustomControl.)

Maximum

Gets or sets the upper limit of the range this TCnTrackBar is working with.

MaximumSize

Gets or sets the size that is the upper limit that GetPreferredSize(Size) of the .Net control can specify. (Inherited from TClrCustomControl.)

Minimum

Gets or sets the lower limit of the range this TCnTrackBar is working with.

MinimumSize

Gets or sets the size that is the lower limit that GetPreferredSize(Size) of the .Net control can specify. (Inherited from TClrCustomControl.)

ModifierKeys

Gets a value indicating which of the modifier keys (SHIFT, CTRL, and ALT) is in a pressed state. (Inherited from TClrCustomControl.)

MouseButtons

Gets a value indicating which of the mouse buttons is in a pressed state. (Inherited from TClrCustomControl.)

MousePosition

Gets the position of the mouse cursor in screen coordinates. (Inherited from TClrCustomControl.)

OnBackColorChanged

Represents property OnBackColorChanged.

OnBindingContextChanged

Represents property OnBindingContextChanged.

OnCursorChanged

Represents property OnCursorChanged.

OnDragDrop

Occurs when a drag-and-drop operation is completed. (Inherited from TClrCustomControl.)

OnDragOver

Occurs when an object is dragged over the control's bounds. (Inherited from TClrCustomControl.)

OnEndDrag

Occurs when the dragging of an object ends, either by dropping the object or by canceling the dragging. (Inherited from TClrCustomControl.)

OnEnter

Represents property OnEnter.

OnKeyDown

Represents property OnKeyDown.

OnKeyPress

Represents property OnKeyPress.

OnKeyUp

Represents property OnKeyUp.

OnLeave

Represents property OnLeave.

OnMouseCaptureChanged

Represents property OnMouseCaptureChanged.

OnMouseClick

Represents property OnMouseClick.

OnMouseDoubleClick

Represents property OnMouseDoubleClick.

OnMouseDown

Represents property OnMouseDown.

OnMouseEnter

Represents property OnMouseEnter.

OnMouseHover

Represents property OnMouseHover.

OnMouseLeave

Represents property OnMouseLeave.

OnMouseMove

Represents property OnMouseMove.

OnMouseUp

Represents property OnMouseUp.

OnPropertyChange

Occurs when the published property of the control changes. (Inherited from TClrCustomControl.)

Orientation

Gets or sets a value indicating the horizontal or vertical orientation of the track bar.

PopupMenu

Specifies the pop-up menu associated with the control. (Inherited from TClrCustomControl.)

ProductName

Gets the product name of the assembly containing the control. (Inherited from TClrCustomControl.)

ProductVersion

Gets the version of the assembly containing the control. (Inherited from TClrCustomControl.)

Right

Gets the distance, in pixels, between the right edge of the control and the left edge of its container's client area. (Inherited from TClrCustomControl.)

RightToLeftLayout

Gets or sets a value indicating whether the contents of the TCnTrackBar will be laid out from right to left.

Size

Gets or sets the height and width of the control. (Inherited from TClrCustomControl.)

SmallChange

Gets or sets the value added to or subtracted from the Value property when the scroll box is moved a small distance.

TabOrder

Indicates the position of the control in its parent's tab order. (Inherited from TClrCustomControl.)

TabStop

Gets or sets a value indicating whether the user can give the focus to this control using the TAB key. (Inherited from TClrCustomControl.)

Text

Gets or sets the text associated with this control. (Inherited from TClrCustomControl.)

TickFrequency

Gets or sets a value that specifies the delta between ticks drawn on the control.

TickStyle

Gets or sets a value indicating how to display the tick marks on the track bar.

ToolTip

Associates ToolTip control with this control. (Inherited from TClrCustomControl.)

TooltipText

The ToolTip text to display when the pointer is on the control. (Inherited from TClrCustomControl.)

UseWaitCursor

Gets or sets a value indicating whether to use the wait cursor for the current control and all child controls. (Inherited from TClrCustomControl.)

Value

Gets or sets a numeric value that represents the current position of the scroll box on the track bar.

Visible

Gets or sets a value indicating whether the control and all its child controls are displayed. (Inherited from TClrCustomControl.)

Top
Show:
 NameDescription
AdjustSize

Adjusts the control's size according to its contents and constraints. (Inherited from TClrCustomControl.)

BeginInit

Begins the initialization of a TCnTrackBar that is used on a form or used by another component. The initialization occurs at run time.

CanAutoSize(Integer,Integer)

Indicates how the control can be resized. (Inherited from TClrCustomControl.)

CanFocus

Indicates whether a control can receive focus. (Inherited from TClrCustomControl.)

CanResize(Integer,Integer)

Indicates how the control can respond to a resize attempt (Inherited from TClrCustomControl.)

ChangeScale(Integer,Integer)

Repositions and resizes the form by the ratio M/D, adjusting its client area and font size as needed. (Inherited from TClrCustomControl.)

CreateControl

Forces the creation of the visible control, including the creation of the handle and any visible child controls. (Inherited from TClrCustomControl.)

CreateGraphics

Creates the Graphics for the control. (Inherited from TClrCustomControl.)

CreateHandle

Creates a handle for the control. (Inherited from TClrCustomControl.)

CreateParams(TCreateParams)

Initializes the window-creation parameter record when the form window is created. (Inherited from TClrCustomControl.)

DblClick

OnDblClick event dispatcher. (Inherited from TClrCustomControl.)

DoAddDockClient(TControl,TRect)

Performs actions when a control is docked to the windowed control. (Inherited from TClrCustomControl.)

DoBackColorChange(TObject)

Performs actions when a control BackColor changes. (Inherited from TClrCustomControl.)

DoBackgroundImageChange(TObject)

Performs actions when a control BackgroundImage changes. (Inherited from TClrCustomControl.)

DockOver(TDragDockObject,Integer,Integer,TDragState,Boolean)

Responds when a docking client is dragged over the windowed control. (Inherited from TClrCustomControl.)

DockReplaceDockClient(TControl,TWinControl,TControl,TAlign,TControl)

Invalidates the first dock site in the list of child controls. (Inherited from TClrCustomControl.)

DoDockOver(TDragDockObject,Integer,Integer,TDragState,Boolean)

Generates an OnDockOver event. (Inherited from TClrCustomControl.)

DoEnter

Respond to receiving input focus. (Inherited from TClrCustomControl.)

DoExit

Responds to losing input focus. (Inherited from TClrCustomControl.)

DoFontChange(TObject)

Performs actions when a control Font changes. (Inherited from TClrCustomControl.)

DoForeColorChange(TObject)

Performs actions when a control ForeColor changes. (Inherited from TClrCustomControl.)

DoGetControlClientRectangle

Gets the rectangle that represents the client area of the control. (Inherited from TClrCustomControl.)

DoGetDefaultBorderStyle

Gets the default border type of the control. (Inherited from TClrCustomControl.)

DoGetDotNetBaseControl

Gets the base .Net control. (Overrides TClrCustomControl.DoGetDotNetBaseControl.)

DoGetDotNetControlDefaultHeight

Gets the default height of the control. (Overrides TClrCustomControl.DoGetDotNetControlDefaultHeight.)

DoGetDotNetControlDefaultWidth

Gets the default Width of the control. (Overrides TClrCustomControl.DoGetDotNetControlDefaultWidth.)

DoGetDotNetControlHandle

Gets the window handle that the control is bound to. (Inherited from TClrCustomControl.)

DoInitializeDotNetControl

Creates and initializes the .Net control. (Inherited from TClrCustomControl.)

DoLocationChange(TObject)

Performs actions when a control Location changes. (Inherited from TClrCustomControl.)

DoMaximumSizeChange(TObject)

Performs actions when a control MaximumSize changes. (Inherited from TClrCustomControl.)

DoMinimumSizeChange(TObject)

Performs actions when a control MinimumSize changes. (Inherited from TClrCustomControl.)

DoMouseWheel(TShiftState,Integer,TPoint)

Processes mouse wheel motion. (Inherited from TClrCustomControl.)

DoMouseWheelDown(TShiftState,TPoint)

Is an OnMouseWheelDown event dispatcher. (Inherited from TClrCustomControl.)

DoMouseWheelUp(TShiftState,TPoint)

Is an OnMouseWheelUp event dispatcher. (Inherited from TClrCustomControl.)

DoSetControlBorderStyle(TBorderStyle_)

Sets the border type of the control. (Inherited from TClrCustomControl.)

DoSetControlStyles(TControlStyles_Set,Boolean)

Set the style of the control. (Inherited from TClrCustomControl.)

DoSetDotNetControlParent

Specifies the parent of the control. (Inherited from TClrCustomControl.)

DoShowContextMenu(TPoint)

Represents method DoShowContextMenu(TPoint). (Inherited from TClrCustomControl.)

DoSizeChange(TObject)

Performs actions when a control Size changes. (Inherited from TClrCustomControl.)

DoSupportTextProperty

Check if the Text property is supported by the control. (Inherited from TClrCustomControl.)

DoUseClrContainer

Specify whether to use the common language runtime usercontrol container to host the .Net control. (Inherited from TClrCustomControl.)

DrawToBitmap(TBitmap,TRect)

Supports rendering to the specified bitmap. (Inherited from TClrCustomControl.)

EndInit

Ends the initialization of a TCnTrackBar that is used on a form or used by another component. The initialization occurs at run time.

Focus

Sets input focus to the control. (Inherited from TClrCustomControl.)

Focused

Determines whether the control has input focus. (Inherited from TClrCustomControl.)

GetClrObject

Get the common language runtime object from the internal control interface. (Inherited from TClrCustomControl.)

Invalidate

Overloaded. Invalidates the entire surface of the control and causes the control to be redrawn. (Inherited from TClrCustomControl.)

Invalidate(Boolean)

Overloaded. Invalidates a specific region of the control and causes a paint message to be sent to the control. Optionally, invalidates the child controls assigned to the control. (Inherited from TClrCustomControl.)

Invalidate(TRect)

Overloaded. Invalidates the specified region of the control (adds it to the control's update region, which is the area that will be repainted at the next paint operation), and causes a paint message to be sent to the control. (Inherited from TClrCustomControl.)

Invalidate(TRect,Boolean)

Overloaded. Invalidates the specified region of the control (adds it to the control's update region, which is the area that will be repainted at the next paint operation), and causes a paint message to be sent to the control. Optionally, invalidates the child controls assigned to the control. (Inherited from TClrCustomControl.)

IsKeyLocked(TKeys_Set)

Determines whether the CAPS LOCK, NUM LOCK, or SCROLL LOCK key is in effect. (Inherited from TClrCustomControl.)

IsMnemonic(WCHAR,String)

Determines if the specified character is the mnemonic character assigned to the control in the specified string. (Inherited from TClrCustomControl.)

KeyDown(Word,TShiftState)

Responds to key press events. (Inherited from TClrCustomControl.)

KeyPress(Char)

Responds to keyboard input. (Inherited from TClrCustomControl.)

KeyUp(Word,TShiftState)

Respond to released key. (Inherited from TClrCustomControl.)

MouseDown(TMouseButton,TShiftState,Integer,Integer)

OnMouseDown event dispatcher. (Inherited from TClrCustomControl.)

MouseMove(TShiftState,Integer,Integer)

Responds to mouse moving over control area. (Inherited from TClrCustomControl.)

MouseUp(TMouseButton,TShiftState,Integer,Integer)

Is an OnMouseUp event dispatcher. (Inherited from TClrCustomControl.)

Notification(TComponent,TOperation)

Represents method Notification(TComponent,TOperation). (Inherited from TClrCustomControl.)

Paint

Renders the image of a windowed control. (Inherited from TClrCustomControl.)

PerformLayout

Overloaded. Forces the control to apply layout logic to all its child controls. (Inherited from TClrCustomControl.)

PropertyChanged

Responds to change in the published properties of the control. (Inherited from TClrCustomControl.)

QueryInterface(TGUID,Void)

Returns a reference to a specified interface if that interface is supported by the control. (Inherited from TClrCustomControl.)

Refresh

Forces the control to invalidate its client area and immediately redraw itself and any child controls. (Inherited from TClrCustomControl.)

RegisterEventCallBack(ClrWString,Pointer)

Add an event to the instance using the specified event name and function pointer which is the event handler. The RegisterEventCallBack method does not directly add the event handler to the event. A hooking mechanism is used such that if the event is fired, the hook event is also fired which in turn calls the function pointer. (Inherited from TClrCustomControl.)

RegisterEventSource

Register the Delphi object which will raise the .Net event handler. (Inherited from TClrCustomControl.)

Repaint

Repaints the entire control. (Inherited from TClrCustomControl.)

ResetBackColor

Resets the BackColor property to its default value. (Inherited from TClrCustomControl.)

ResetBindings

Causes a control bound to the BindingSource to reread all the items in the list and refresh their displayed values (Inherited from TClrCustomControl.)

ResetCursor

Resets the Cursor property to its default value. (Inherited from TClrCustomControl.)

ResetFont

Resets the Font property to its default value. (Inherited from TClrCustomControl.)

ResumeLayout

Overloaded. Resumes usual layout logic. (Inherited from TClrCustomControl.)

ResumeLayout(Boolean)

Overloaded. Resumes usual layout logic, optionally forcing an immediate layout of pending layout requests. (Inherited from TClrCustomControl.)

Scale(TSizeF)

Scales the control and all child controls by the specified scaling factor. (Inherited from TClrCustomControl.)

Select

Activates a control. (Inherited from TClrCustomControl.)

SetAutoSize(Boolean)

Sets the value of the AutoSize property. (Inherited from TClrCustomControl.)

SetBorderStyle(TBorderStyle)

Sets the value of the BorderStyle property. (Inherited from TClrCustomControl.)

SetBounds(Integer,Integer,Integer,Integer)

Sets the windowed control's boundary properties all at once. (Inherited from TClrCustomControl.)

SetName(TComponentName)

Sets the name of the control. (Inherited from TClrCustomControl.)

SetRange(Integer,Integer)

Sets the minimum and maximum values for a TCnTrackBar .

SetText(String)

Sets the text of the control. (Inherited from TClrCustomControl.)

SuspendLayout

Temporarily suspends the layout logic for the control. (Inherited from TClrCustomControl.)

UnRegisterEventCallBack(ClrWString,Pointer)

Remove an event from the instance using the specified event name and function pointer which is the event handler. (Inherited from TClrCustomControl.)

UnRegisterEventSource

Represents method UnRegisterEventSource. (Inherited from TClrCustomControl.)

Update

Causes the control to redraw the invalidated regions within its client area. (Inherited from TClrCustomControl.)

UpdateDotNetControlSize

Updates .Net control size. (Inherited from TClrCustomControl.)

UpdateStyleElements

Invalidates a specific region of the control and causes a paint message to be sent to the control. (Inherited from TClrCustomControl.)

WndProc(TMessage)

Provides specific message responses for the control. (Inherited from TClrCustomControl.)

_AddRef

Called when an application uses a component interface. (Inherited from TClrCustomControl.)

_Release

Called when an application releases a component interface. (Inherited from TClrCustomControl.)

Top
Show:
 NameDescription
OnBackgroundImageChanged

Occurs when the value of the BackgroundImage property changes. (Inherited from TClrCustomControl.)

OnCausesValidationChanged

Occurs when the value of the CausesValidation property changes. (Inherited from TClrCustomControl.)

OnClick

Occurs when the control is clicked. (Inherited from TClrCustomControl.)

OnClientSizeChanged

Occurs when the value of the ClientSize property changes. (Inherited from TClrCustomControl.)

OnDoubleClick

Occurs when the control is double-clicked. (Inherited from TClrCustomControl.)

OnEnabledChanged

Occurs when the Enabled property value has changed. (Inherited from TClrCustomControl.)

OnFontChanged

Occurs when the Font property value changes. (Inherited from TClrCustomControl.)

OnForeColorChanged

Occurs when the ForeColor property value changes. (Inherited from TClrCustomControl.)

OnGotFocus

Occurs when the control receives focus. (Inherited from TClrCustomControl.)

OnInvalidated

Occurs when a control's display requires redrawing. (Inherited from TClrCustomControl.)

OnLostFocus

Occurs when the control loses focus. (Inherited from TClrCustomControl.)

OnMouseWheel

Occurs when the mouse wheel moves while the control has focus. (Inherited from TClrCustomControl.)

OnMove

Occurs when the control is moved. (Inherited from TClrCustomControl.)

OnPaint

Occurs when the control is redrawn. (Inherited from TClrCustomControl.)

OnPreviewKeyDown

Occurs before the OnKeyDown event when a key is pressed while focus is on this control. (Inherited from TClrCustomControl.)

OnResize

Occurs when the control is resized. (Inherited from TClrCustomControl.)

OnRightToLeftLayoutChanged

Occurs when the value of the RightToLeftLayout property changes.

OnScroll

Occurs when either a mouse or keyboard action moves the scroll box.

OnSizeChanged

Occurs when the Size property value changes. (Inherited from TClrCustomControl.)

OnSystemColorsChanged

Occurs when the system colors change. (Inherited from TClrCustomControl.)

OnTabIndexChanged

Occurs when the TabOrder/TabIndex property value changes. (Inherited from TClrCustomControl.)

OnTabStopChanged

Occurs when the TabStop property value changes. (Inherited from TClrCustomControl.)

OnTextChanged

Occurs when the Text property value changes. (Inherited from TClrCustomControl.)

OnValidated

Occurs when the control is finished validating. (Inherited from TClrCustomControl.)

OnValidating

Occurs when the control is validating. (Inherited from TClrCustomControl.)

OnValueChanged

Occurs when the Value property of a track bar changes, either by movement of the scroll box or by manipulation in code.

OnVisibleChanged

Occurs when the Visible property value changes. (Inherited from TClrCustomControl.)

Top

See C:\Users\Public\Documents\CrystalNet Technologies\.Net VCL for Delphi Demo Folder after installation for examples of how to use this control.