PPComboBox

Inheritance Hierarchy

          IComponent

          IControl

          IComboBox

          PPComboBox

Description

The PPComboBox component is identical to the ComboBox component that has its own style similar to that of Foresight Analytics Platform.

Comments

Unlike ComboBox, style of the PPComboBox component does not depend on style and settings of the operating system. Functional settings and features of the PPComboBox and ComboBox components are identical.

Example

Properties of the PPComboBox Component

  Property name Brief description

Align

The  Align property determines component alignment within its parent 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 the 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.

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's area.

ClientWidth

The  ClientWidth property determines the width of the client component's area.

Color

The  Color property determines a component background color.

ComponentCount

The  ComponentCount property returns the number of child components.

Components

The  Components property returns the child component.

Cursor

The  Cursor property determines how the cursor looks like on mouseover.

Data

The  Data property is used to store any custom data.

DropDownCount

The  DropDownCount property determines the maximum number of elements simultaneously displayed in a drop-down list.

DroppedDown

The  DroppedDown property returns True if the drop-down list of the component is expanded.

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 this component.

Font

The Font property determines the set of characteristics describing the font that is used to display text.

Height

The Height property determines component height.

HelpContext

The HelpContext property determines the unique index for a section of a context help for this component.

Hint

The Hint property determines a component tooltip text.

ItemCount

The ItemCount property returns the number of rows in a drop-down list.

ItemHeight

The ItemHeight property returns the height of elements (rows) of a drop-down list.

ItemIndex

The ItemIndex property determines the index of the selected element of the list.

Items

The Items property determines the drop-down list rows collection.

Left

The Left property determines the coordinate of the left border of the component.

MaxLength

The MaxLength property determines the maximum length of entered text.

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 to be displayed on the right-click on the component.

Scrolls

The Scrolls property returns parameters of component's scrollbars.

SelLength

The SelLength property determines the number of characters selected in the component text.

SelStart

The SelStart property determines the cursor position, from which to start the selection of the component's text.

SelText

The SelText property determines the text selected in the component.

ShowHint

The ShowHint property enables and disables showing a component tooltip.

Sorted

The Sorted property determines whether the rows in the drop-down list must be automatically sorted in alphabetical order.

Style

The Style property determines a style of displaying drop-down list.

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 he wishes.

Text

The Text property determines the row identifying a component for the user.

Top

The Top property determines the coordinate of the top border of the component.

Visible

The Visible property determines visibility of the component during execution.

Width

The Width property determines component width.

Methods pf the PPComboBox Component

  Method name Brief description

BringToFront

The BringToFront method brings a component to front.

ClearEdit

The ClearEdit method clears the component edit box.

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 the image of the component with all child components.

SelectAll

The SelectAll method selects all text in the component edit box.

ScreenToClient

The ScreenToClient method converts screen coordinates of a point into coordinates specified relative to the component coordinate system.

SendToBack

The SendToBack method sends a component to back.

SetFocus

The SetFocus method sets focus to this component.

Events of the PPComboBox Component

  Event name Brief description

OnBeginDrag

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

OnChange

The OnChange event occurs when the text in the component edit box is changed.

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 a dragged object over it.

OnDropDown

The OnDropDown event occurs when a drop-down list is displayed.

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.

OnItemSelect

The OnItemSelect event occurs when an element is selected in the list.

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 before 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 component's area and a mouse button is pressed.

OnMouseEnter

The OnMouseEnter occurs when the mouse cursor enters the component's area.

OnMouseHover

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

OnMouseLeave

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

OnMouseMove

The OnMouseMove event occurs when the mouse cursor is moved over the component.

OnMouseUp

The OnMouseUp event occurs if the user releases mouse button when the cursor is in the component area.

OnMouseWheel

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

OnVScroll

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

See also:

Platform Components