Embedded Visual Basic Windows Ce And Pocket Pc Mobile Applications [Electronic resources] نسخه متنی

eMbedded Visual Basic®: Windows® CE and Pocket PC Mobile Applications

By
Chris Tacke, Timothy Bassett

Table of Contentsappendix A.
Control Reference

The CE Treeview Object Model

The following tables outline the Object Model for the CE TreeView Control. This control is included in MSCETreeview.dll.

Table A.32. TreeViewCtl Methods
Method	Return	Description
GetVisibleCount	Long	The number of Node objects that fit vertically in the internal area of the TreeView Control. Note: This may be greater than the actual number of Nodes in the control.
Move	Nothing	Moves the control to the specified location. Can be used to set the Left, Top, Height, and Width simultaneously.
Refresh	Nothing	Forces a repaint of the entire control.
SetFocus	Nothing	Moves the current focus to the control.
StartLabelEdit	Nothing	Allows the user to edit the Text of a node.
Zorder	Nothing	Places the control at the front or back of the z-order.

Table A.33. TreeViewCtl Properties
Property	Return	Description
Container	Object	Returns a reference to the TreeView control's container object, such as its containing form.
Enabled	Boolean	Sets or Gets whether the control responds to user-generated events.
Event_Cancel	Boolean	Determines whether the control processes events.
FontBold	Boolean	Sets or Gets the Bold font style for the control.
FontItalic	Boolean	Sets or Gets the Italic font style for the control.
FontName	String	Sets or Gets the font used to display text in the object.
FontSize	Long	Sets or Gets the font size for text displayed in the control.
FontStrikethrough	Boolean	Sets or Gets the Strikethrough font style for the control.
FontUnderline	Boolean	Sets or Gets the Underline font style for the control.
Height	Long	Sets or Gets the current height of the control
HideSelection	Boolean	Determines whether selected text remains highlighted when the control loses focus.
ImageList	Long	Sets or Gets the handle to the ImageList associated with the control.
Indentation	Single	Sets or Gets the distance a child Node is indented below its parent.
LabelEdit	LabelEditEnum	Determines whether Labels within the control are user-editable.
Left	Long	Sets or Gets the current Left position of the control.
LineStyle	LineStyleEnum	Sets or Gets the style of lines displayed between Node objects.
Name	String	Gets the logical name of the TreeView control as set in the Properties window.
Nodes	Nodes Collection	Gets a reference to the Nodes Collection of the control.
Parent	Object	Returns a reference to the TreeView control's parent object, such as its containing form.
PathSeparator	String	Sets or Gets the delimiting character used for the return of the FullPath property.
SelectedItem	Node Object	Gets a reference to the currently selected Node object.
Sorted	Boolean	Determines whether Root Nodes within the control are sorted alphabetically by Text.
Style	TreeStyleEnum	Sets or Gets the types of graphics, such as lines, pluses and minuses, which appear for each Node.
TabIndex	Long	Sets or Gets order in which the Tab key sends focus to the control relative to all other controls on the form.
TabStop	Boolean	Determines whether the Tab key can set focus to the control.
Tag	String	Sets or Gets a string that can be used to hold any additional information the programmer wants to store.
Top	Long	Sets or Gets the current Top position of the control.
Visible	Boolean	Determines whether the control is displayed to the user.
Width	Long	Sets or Gets the current Width of the control.

Table A.34. TreeView Control Events
Event	Description
AfterLabelEdit	Fires after a user changes the Text of a Node.
BeforeLabelEdit	Fires when a user begins editing the Text of a Node.
Collapse	Fires when a Node is collapsed by the user.
Expand	Fires when a Node is expanded by the user.
GotFocus	Fires when current application focus is set to the control.
LostFocus	Fires when current application focus leaves the control.
NodeClick	Fires whenever the user clicks on a Node.

Table A.35. Node Object Methods
Method	Return	Description
EnsureVisible	Nothing	Ensures the specified Node is visible by scrolling and expanding nodes if necessary.

Table A.36. Node Object Properties
Property	Return	Description
Child	Node Object	Gets a reference to a Node's first child Node.
Children	Long	Gets the number of child Nodes a parent Node has.
Expanded	Boolean	Sets or Gets whether the specified node is expanded.
ExpandedImage	Long	Sets or Gets the index of the ImageList image displayed when a Node is expanded.
FirstSibling	Node Object	Gets a reference to a Node's first sibling Node.
FullPath	String	Returns the full path to the specified Node.
Image	Long	Sets or Gets the index of the ImageList image displayed normally for a Nodes in the control.
Index	Long	Gets a number that uniquely identifies the specified Node within the Nodes Collection.
Key	String	Sets or Gets a string that uniquely identifies the specified Node within the Nodes Collection.
LastSibling	Node Object	Gets a reference to a Node's first sibling Node.
Next	Node Object	Gets a reference to a Node's next sibling Node.
Parent	Node Object	Gets a reference to a Node's Parent Node.
Previous	Node Object	Gets a reference to a Node's previous sibling Node.
Root	Node Object	Gets a Reference to the Root Node of the TreeView control.
Selected	Boolean	Sets or Gets the selection status of a Node.
SelectedImage	Long	Sets or Gets the index of the ImageList image displayed when a Node is Selected.
Sorted	Boolean	Determines whether a Node's child Nodes are sorted alphabetically by Text.
Text	String	Sets or Gets the text displayed for a Node.

Table A.37. Nodes Collection Methods
Method	Return	Description
Add	Node Object	Adds a new Node object to the Nodes collection.
Clear	Nothing	Removes all Nodes from the Nodes collection.
Remove	Nothing	Removes a specific Node from the Nodes collection.

Table A.38. Nodes Collection Properties
Property	Return	Description
Count	Long	Gets the total number of Nodes in the Nodes collection.
Item	Node Object	Gets a reference to a Node in the Nodes collection based on its Index property.

Table A.39. TreeStyleEnum Constants
Constant	Value	Description
TvwTextOnly	0	Indicates the control will not display lines, pictures, or plus/minus.
TvwPictureText	1	Indicates the control will display pictures for each Node.
TvwPlusMinusText	2	Indicates the control will display a plus/minus box left of each Node.
TvwPlusPictureText	3	Indicates the control will display both a picture and a plus/minus box for each Node.
TvwTreelinesText	4	Indicates the control will display lines between Nodes.
TvwTreelinesPictureText	5	Indicates the control will display lines between each Node as well as pictures for each Node.
TvwTreelinesPlusMinusText	6	Indicates the control will display lines between each Node as well as a plus/minus box left of each Node.
TvwTreelinesPlusMinusPictureText	7	Indicates the control will display lines between each Node, picture for each Node and a plus/minus box left of each Node.

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Chris Tacke; Timothy Bassett

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The CE Treeview Object Model

Table A.32. TreeViewCtl Methods

Table A.33. TreeViewCtl Properties

Table A.34. TreeView Control Events

Table A.35. Node Object Methods

Table A.36. Node Object Properties

Table A.37. Nodes Collection Methods

Table A.38. Nodes Collection Properties

Table A.39. TreeStyleEnum Constants

eMbedded Visual Basic®: Windows® CE and Pocket PC Mobile Applications
By Publisher		: Sams Publishing
Pub Date	: November 07, 2001
ISBN	: 0-672-32277-3
Pages	: 416