The TreeCombo class implements the TreeCombo development environment component that is used to display branching hierarchical structures as combo boxes.
| Property name | Brief description | |
| AnimationType | The AnimationType property determines the type of animation that is used when the list of the component is expanded. | |
| AutoUpdateInfo | The AutoUpdateInfo property indicates whether the information about selection in the component editor is updated automatically. | |
| CancelOnEscape | The CancelOnEscape property determines whether the set selection should be cancelled and the list should be closed on pressing the ESCAPE key. | |
| CloseOnClick | The CloseOnClick property determines whether the list should be closed automatically when one of the elements from this list is selected by the mouse button click. | |
| CloseOnEnter | The CloseOnEnter property determines whether the list should be closed and the selection should be saved on pressing the ENTER key. | |
| CustomMultiselectText | The CustomMultiselectText property determines whether a custom template is used to form component text on multiple selection. | |
| CustomMultiselectTextTemplate | The CustomMultiselectTextTemplate property determine the template, according to which component text willbe formed on multiple selection. | |
| Dropped | The Dropped property determines visibility of the drop-down list. | |
| DroppedListHeight | The DroppedListHeight property determines height of the drop-down list of the component. | |
| DroppedListWidth | The DroppedListWidth property determines width of the drop-down list of the component. | |
| DroppedPopupMenu | The DroppedPopupMenu property determines the context menu that is called in the area of the drop-down list of the component. | |
| FilterStyle | The FilterStyle property determines the mode of building of the filtered elements tree. | |
| FindEditVisible | The FindEditVisible property indicates whether the search line is displayed when the drop-down list of component is expanded. | |
| ShowEditImage | The ShowEditImage property indicates whether icon of the element is displayed in the component editor. | |
| ShowSystemHints | The ShowSystemHints property determines whether a system tooltip is displayed for various component elements. |
| Property name | Brief description | |
| The AdjustWidthOnlyVisible property determines the method of auto adjusting the column width. | ||
| Outdated. Use ITreeControl.SelectionMode. | ||
| The AutoCheckParent property determines whether the indeterminate state should be set automatically for the parent nodes of the component, if not all child elements are selected. | ||
| The BorderStyle property determines style of the frame that outlines the component. | ||
| The Checkboxes property determines whether component elements have checkboxes. | ||
| The ColumnClick property determines whether it is possible to display columns headers as buttons. | ||
| The Columns property returns collection of columns of the component. | ||
| The DropTargetNode property determines node of the component over which user is dragging another node at the moment. | ||
| The EnableFindDialog property determines whether the pressing CTRL+F or F3 hot keys should call standard dialog of the elements search. | ||
| The FindMode property determines the mode of selection of the found elements. | ||
| The FocusedNode property determines a node that has focus at the moment. | ||
| The GridLines property determines whether the gird should be displayed. | ||
| The HeaderMenu property determines context menu that is called on clicking the additional mouse button on the component header. | ||
| The HideSelection property indicated whether the selection is displayed in the component when the focus is passed to another component. | ||
| The HighlightTrack property determines whether the element is highlighted on mouse over. | ||
| The HotTrack property indicates whether the element over which the mouse pointer moves, is underlined. | ||
| The HotTrackAutoExpand property indicates whether the state of the child elements tree is changed on clicking on the selected element. | ||
| The Images property determines the list of images that are displayed near the elements of the component tree. | ||
| The InnerRoot property returns parameters of the inner root node of the tree. | ||
| The Locked property determines whether it is possible to change selection and edit elements in the component. | ||
| Outdated. Use ITreeControl.SelectionMode. | ||
| The Nodes property returns collection of component elements. | ||
| The ReadOnly property indicates whether the elements can be edited. | ||
| The RowSelect property determines whether it is necessary to highlight the whole string of the selected element. | ||
| The Selected property returns the last selected element of the tree. | ||
| The Selection property returns selection of the elements tree. | ||
| The SelectionMode property determines the mode of selection of the elements in the component. | ||
| The ShowButtons property determines whether the buttons of expanding and collapsing of the nodes child tree should be displayed. | ||
| The ShowColumnHeaders property determines whether headers of the columns should be displayed. | ||
| The ShowHeaderButton property determines whether to show the button that opens column headers menu. | ||
| The ShowHints property determines whether the tooltips should be displayed when the mouse is kept over the elements. | ||
| The ShowLines property determines whether the line that connects the node with its successors should be displayed. | ||
| The SortColumn property determines index of the column by which the sorting should be performed. | ||
| The Sorted property determines whether it is possible to sort by the column specified in the SortColumn property. | ||
| The SortType property determines type of sorting for the component. | ||
| The StateImages property determines the list of images that are used to indicate the state of elements of the component tree. |
| 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 a component can accept a dragged object. | ||
| The Anchors property returns settings determining % 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 given component is focused. | ||
| The Font property defines the parameters of the font used to display text in a component. | ||
| The Heigth 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 you hover over a component. | ||
| The HintTimeout property sets for how long the tooltip is shown. | ||
| 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 tooltip 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 at the form runtime. | ||
| The Width property determines the horizontal size of a component (pixels). |
| Property name | Brief description | |
| ComponentCount | The ComponentCount property returns the number of child components, located on the parent component. | |
| Components | The Components property returns child property, the index of which is passed by the input parameter. | |
| Data | The Data property is used to store any custom data. | |
| Name | The Name property specifies the component name. | |
| Tag | The compiler does not use the Tag property. A user can change the value of the Tag property and use it as he wishes. |
| Method name | Brief description | |
| AdjustDroppedListWidth | The AdjustDroppedListWidth method adjusts the width of the drop-down list of the component. | |
| DropDown | The DropDown property expands the combo box. | |
| RollUp | The RollUp method rolls up the combo box. | |
| UpdateInfo | The UpdateInfo method updates information about elements selection that is displayed in the component editor. |
| Method name | Brief description | |
| AdjustWidth | The AdjustWidth method adjusts automatically width of the column taking into account its contents. | |
| GetItemAt | The GetItemAt method checks if there is an element in the specified point of client component area. | |
| HitTest | The HitTest method checks if there is an element in the specified point of client component area and returns check result. | |
| Sort | The Sort method sorts elements of the specified column to specified direction. | |
| SortDefault | The SortDefault method performs ascending sorting of component elements. |
| Method name | Brief description | |
| Outdated. The BringToFront method sends 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 allows to start dragging. | ||
| 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. |
| Event name | Brief description | |
| OnBeginFilter | The OnBeginFilter event occurs at the start of filtering of component elements list. | |
| OnDropDown | The OnDropDown event occurs on expanding the component list. | |
| OnFilter | The OnFilter event occurs after the list of components is filtered. | |
| OnRollUp | The OnRollUp event occurs on collapsing the component list. |
| Event name | Brief description | |
| OnBeginSearch | The OnBeginSearch event occurs when elements are started to be searched in the component. | |
| OnAdded | The OnAdded event occurs when the new element is added. | |
| OnChecked | The OnChecked event occurs after flag state of the element has been changed. | |
| OnChecking | The OnChecking event occurs before flag state of the element is changed. | |
| OnCollapsed | The OnCollapsed event occurs after the child hierarchy of the tree node has been collapsed. | |
| OnCollapsing | The OnCollapsing event occurs before the child hierarchy of the tree node is collapsed. | |
| OnColumnClick | The OnColumnClick event occurs on clicking on the header of column of the component. | |
| OnCompareItems | The OnCompareItems event occurs when two elements are compared during the custom sorting of elements. | |
| OnDeleting | The OnDeleting event occurs when the element is removed. | |
| OnEdited | The OnEdited event occurs on escaping from the edit mode of field contents of the current component record. | |
| OnEditing | The OnEditing event occurs on activating the edit mode of the field contents of the current component record. | |
| OnExpanded | The OnExpanded event occurs after the child hierarchy of the tree node has been expanded. | |
| OnExpanding | The OnExpanding event occurs before the child hierarchy of the tree node is expanded. | |
| OnFocusedChanged | The OnFocusedChanged event occurs after the focus has been passed to another node of the component. | |
| OnFocusedChanging | The OnFocusedChanging event occurs before the focus is passed to another node of the component. | |
| OnGetHint | The OnGetHint event occurs when the tooltip appears near the element over which the mouse cursor has stopped. | |
| OnGetNodeImage | The OnGetNodeImage event is used when an image is determined near the tree element. | |
| OnGetNodeStateImage | The OnGetNodeStateImage event is used when the state image is determined near the tree element. | |
| OnHover | The OnHover event occurs when the mouse cursor hovers over the element and this element of the component is underlined. | |
| OnSearch | The OnSearch event occurs after the element search in the component is finished. | |
| OnSelected | The OnSelected event occurs after selection of the node has been set. | |
| OnSelecting | The OnSelecting event occurs before selection of the node is set. | |
| OnSelectionChanged | The OnSelectionChanged event occurs when the selection of the node of the component is changed. | |
| OnUnselected | The OnUnselected event occurs after node has been deselected. | |
| OnUnselecting | The OnUnselecting event occurs before element is deselected. |
| Event name | Brief description | |
| The OnBeginDrag event occurs for a component, when a user starts to drag an object from the component. | ||
| The OnClick event occurs, if a user clicks a component area using the main mouse button. | ||
| The OnControlMove event occurs when a component is moved. | ||
| The OnControlResize event occurs when a component is resized. | ||
| The OnDblClick event occurs if a user double clicks a component area using the mouse button. | ||
| The OnDragDrop event occurs for a component if a user drops a dragged object over it. | ||
| The OnDragEnter event occurs, when a dragged object enters the space of this component. | ||
| The OnDragLeave event occurs when a dragged object leaves the borders of this component. | ||
| The OnDragOver event occurs for this component when a user drags a dragged object over it. | ||
| The OnEnter event occurs when a component get focused. | ||
| The OnExit event occurs when a component loses focus. | ||
| The OnHScroll event occurs on changing position of horizontal scrollbar slider. | ||
| The OnKeyDown event occurs if a component is focused and a keyboard key is pressed. | ||
| The OnKeyPress event occurs if a component is focused when a user presses a character key. | ||
| The OnKeyPreview event occurs prior to each event requiring clicking. | ||
| The OnKeyUp event occurs if a component is focused and a user releases any button previously pressed. | ||
| The OnMouseDown event occurs when the pointer is in component area and a mouse button is pressed. | ||
| The OnMouseEnter event occurs when mouse cursor enters the component area. | ||
| The OnMouseHover event occurs when mouse cursor is held in the component area. | ||
| The OnMouseLeave event occurs when mouse cursor leaves the component area. | ||
| The OnMouseMove event occurs when the mouse cursor moves over a component. | ||
| The OnMouseUp event occurs on releasing mouse button when the cursor is in component area. | ||
| The OnMouseWheel event occurs if the component has focus when the mouse wheel is rotated. | ||
| The OnVScroll event occurs on changing position of vertical scrollbar slider. |
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