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Developing User Application > Creating a Form and Components Layout > Development Environment Components > Standard Components > Label

Label

Inheritance Hierarchy

          IComponent

          IControl

          ILabel

          Label

Description

The Label component enables the user to place text labels on the form. The main purpose of the component is creation of text labels for the components that do not have their own headers.

Example

Properties of the Label Component

  Property name Brief description
Align The Align property determines component alignment within its parent component.
Alignment The Alignment property determines text alignment in the component.
AllowDrag The AllowDrag property determines whether an object can be dragged from the component.
AllowDrop The AllowDrop property determines whether the component can accept a dragged object.
Anchors The Anchors property returns settings that determine the percentage of the size change for the current component when the parent component is resized.
AutoSize The AutoSize property determines whether the component is to be automatically resized to fit component text size.
Brush The Brush property determines the brush that is used to fill component area.
ClientHeight The ClientHeight property determines the height of the client component area.
ClientWidth The ClientWidth property determines the width of the client component area.
Color The Color property determines a component background color.
Cursor The Cursor property determines how the cursor looks like when it is hovered over a component at the form runtime.
Data The Data property is used to store any custom data.
Enabled The Enabled property determines whether the component is available for the user.
Focused The Focused property returns True if the focus is set on the component.
Font The Font property determines the parameters of the font that is used to display text in a component.
Height The Height property determines the component height in pixels.
HelpContext The HelpContext property determines a unique index for the context help section for this component.
Hint The Hint property determines the tooltip text displayed if the cursor is hovered over the component.
HintTimeout The HintTimeout determines the time, for which a tooltip is displayed.
Layout The Layout property determines vertical text alignment.
Left The Left property determines the coordinate of the component left edge in pixels.
Name The Name property determines a component name.
Parent The Parent property determines a parent component.
ParentColor The ParentColor property determines whether the component inherits the color of the parent component.
ParentFont The ParentFont property determines whether the component uses the font of the parent component.
ParentShowHint The ParentShowHint property determines whether a tooltip is displayed.
PopupMenu The PopupMenu property determines the context menu displayed when the component is clicked with the right mouse button.
Scrolls The Scrolls property returns parameters of component's scrollbars.
ShowHint The ShowHint property determines whether a tooltip is displayed when the cursor is hovered over a component.
TabOrder The TabOrder property determines the component position in the tab order.
TabStop The TabStop property determines whether the component is focused when the TAB key is pressed.
Tag The Tag property is not used by the compiler. The user can change the value of the Tag property and use it as required.
Text The Text property determines the row identifying the component for the user.
Top The Top property determines the coordinate of the component upper edge in pixels.
Transparent The Transparent property determines whether the component is transparent.
Visible The Visible property determines whether the component is displayed when a form is executed.
Width The Width property determines the horizontal size of a component in pixels.
WordWrap The WordWarp property determines whether the lines exceeding component length are wrapped to a new line.

Methods of the Label Component

 

 Method name

Brief description
ClientToScreen The ClientToScreen method converts the coordinates of a point specified relative to the component coordinate system into screen coordinates.
DoDragDrop The DoDragDrop method enables the user to start dragging operation.
GetImage The GetImage method returns a graphic presentation of a component together with all child components.
ScreenToClient The ScreenToClient method converts screen coordinates of a point into coordinates specified relative to the component coordinate system.
SetFocus The SetFocus method sets focus to this component.

NOTE. The SetFocus method cannot be used for the Label component.

Events of the Label Component

 

Event name

Brief description

OnBeginDrag

The OnBeginDrag event occurs for the component when the user starts to drag an object from the component.

OnClick

The OnClick event occurs if the user clicks the component area.

OnDblClick

The OnDblClick event occurs if the user double-clicks the component area.

OnDragDrop

The OnDragDrop event occurs for the component if the user drops a dragged object over it.

OnDragEnter

The OnDragEnter event occurs when a dragged object crosses the borders of this component.

OnDragLeave

The OnDragLeave event occurs when a dragged object leaves the borders of this component.

OnDragOver

The OnDragOver event occurs for the component when the user drags an object over it.

OnEnter

The OnEnter event occurs when the component receives focus.

OnExit

The OnExit event occurs when the component loses focus.

OnHScroll

The OnHScroll event occurs when horizontal scrollbar slider changes its position.

OnKeyDown

The OnKeyDown event occurs if the component is focused and a keyboard key is pressed.

OnKeyPress

The OnKeyPress event occurs if the component is focused when the user presses a character key.

OnKeyPreview

The OnKeyPreview event occurs prior to each event related to key pressing.

OnKeyUp

The OnKeyUp event occurs if the component is focused and the user releases any button previously pressed.

OnMouseDown

The OnMouseDown event occurs if the cursor is in the component's area and a mouse key is pressed.

OnMouseEnter

The OnMouseEnter event occurs when mouse cursor enters the component area.

OnMouseHover

The OnMouseHover event occurs when mouse cursor is held in the component area.

OnMouseLeave

The OnMouseLeave event occurs when mouse cursor leaves the component area.

OnMouseMove

The OnMouseMove event occurs on moving the cursor over component.

OnMouseUp

The OnMouseUp event occurs on releasing mouse button when the cursor is in the component area.

OnMouseWheel

The OnMouseWheel event occurs if the component is focused when the mouse wheel is rotated.

OnVScroll

The OnVScroll event occurs when vertical scrollbar slider changes its position.

NOTE. The OnEnter and OnExit events cannot be used for the Label component.

See also:

Standard Components