IExpressionEdit

Description

The IExpressionEdit interface contains properties and methods of the ExpressionEdit and ExpressionEditEx development environment components.

Properties

  Property name Brief description
Expression The Expression property determines an expression located in a component.

Properties inherited from ITermEdit

  Property name Brief description
The AutoReparsing property determines whether the text should be automatically transformed into terms and operands.
The DirectInput property determines the possibility of direct input.
The EnableHyperlinks property determines whether it is possible to display a term as a hyperlink.
The Formula property determines the term formula.
The Hyperlink property determines whether the expression, the index of which is an input parameter, is a hyperlink.
The Terms property returns the terms collection.
The WantReturns property determines whether it should be possible to insert a carriage return symbol into the edited text.
The WantTabs property determines whether it should be possible to insert a tab symbol into the edited text.
The WordWarp property determines whether the lines exceeding component length should be wrapped to a new line.

Properties inherited from ICustomEdit

  Property name Brief description
The AutoSelect property determines whether all the text of a component must be selected, when a component receives focus.
The BorderStyle property determines the style of a component border.
The CanUndo property returns True if it is possible to undo text changes in the component.
The CharacterCasing property determines the case of entered component characters.
The HideSelection property determines whether the selected component text should remain the same, when the focus goes to another component.
The MaxLength property determines the maximum length of the entered text.
The Modified property returns True if the component text has been changed.
The ReadOnly property determines whether a user is able to change the component text.
The SelLength property determines the length in characters of the selected text in the component.
The SelStart property determines the position to start text selection in the component.
The SelText property determines text selected in the component.

Properties inherited from IControl

  Property name Brief description
The Align property determines component alignment within its parent component.
The AllowDrag property determines whether an object can be dragged from a component.
The AllowDrop property determines whether the component can accept a dragged object.
The Anchors property returns settings that determine the percentage of the size change for the current component when the parent component is resized.
The Brush property specifies the brush used to fill the component area.
The ClientHeight property determines the height of the client component area.
The ClientWidth property determines the width of the client component area.
The Color property determines the background color of a component.
The Cursor property determines how the cursor looks like when you hover over a component during form execution.
The Enabled property determines whether a component is available for a user.
The Focused property returns True if the focus is set on the component.
The Font property defines the parameters of the font used to display text in a component.
The Height property determines the component height (pixels).
The HelpContext property determines the unique index for a section of a context help for this component.
The Hint property determines the tip text displayed if the mouse pointer is hovered over a component.
The HintTimeout determines the time for which the tooltip is displayed.
The Left property determines the coordinate of the component left edge (pixels).
The Parent property determines the parent component.
The ParentColor property determines whether a component inherits the color of the parent component.
The ParentFont property determines whether a component should use the font of the parent component.
The ParentShowHint property determines when a tooltip is displayed.
The PopupMenu property determines the context menu displayed when a component is clicked using the right mouse button.
The Scrolls property returns parameters of component's scroll bars.
The ShowHint property determines whether a tool tip should be displayed when you hover over a component.
The TabOrder property determines the position of a component in a tab order.
The TabStop property determines whether the focus is set to a component when the Tab button is pressed.
The Text property determines the row identifying a component for a user.
The Top property determines the coordinate of the component upper edge (pixels).
The Visible property determines whether a component is displayed when a form is executed.
Свойство Width определяет ширину компонента в пикселях.

Properties inherited from IComponent

  Property name Brief description
The ComponentCount property returns the number of child components, located on the parent component.
The Components property returns a child component, the index of which is passed via the input parameter.
The Data property is used to store any custom data.
The Name property determines the component name.
The Tag property is not used by the compiler. The user can change the value of this property and use it at his discretion.

Methods

   Method name Brief description
UpdateExpression The UpdateExpression method updates the expression.

Methods inherited from ITermEdit

   Method name Brief description
The BeginUpdate method disables a set of internal mechanisms for accelerating insertion of terms into the component.
The EndUpdate method restores work of internal mechanisms of the component, which were disabled for acceleration of insertion of terms into the component.
The PutCustom method allows to place the user-defined term into the specified position, after which it returns the term index in the collection.
The PutLiteral method allows to place the literal term into the specified position, after which it returns the term index in the collection.
The PutTerm method allows to place the term into the specified position, after which it returns the term index in the collection.
The Reparse method transforms editor text and redistribution of terms in the components.

Methods inherited from ICustomEdit

   Method name Brief description
The Clear method deletes all text in the component.
The ClearSelection method deletes selected text in component.
The ClearUndo method is used to fix the changes of the Text property.
The CopyToClipboard method copies selected data to clipboard.
The CutToClipboard method cuts selected data to clipboard.
The PasteFromClipboard method pastes data from clipboard.
The SelectAll method selects all text in the component.
The Undo method cancels last text change in the component.

Methods inherited from IControl

  Method name Brief description
Outdated. The BringToFront method brings a component to the foreground.
The ClientToScreen method converts the coordinates of a point specified relative to the component coordinate system to screen coordinates.
The DoDragDrop method enables to start drag-and-drop operation.
The GetImage method returns a graphic presentation of a component together with all children.
The ScreenToClient method converts screen coordinates of a point to coordinates specified relative to the component coordinate system.
Outdated. The SendToBack method is used to send a component to the background.
The SetFocus method sets focus to this component.

See also:

ExtCtrls Assembly Interfaces