Overview

The VPM Enterprise control classes are the blueprints for the controls you place on forms. The VPM Enterprise control classes contain properties and methods that provide unique functionality for controls. The VPM Enterprise classes for data-bound controls (for example, the textbox control) link the controls to VPM Enterprise’s field-level security, field-level data dictionary properties and field validation.

The VPM Enterprise-level control classes are located in the VPMCTRLS.VCX class library. The project-level control classes are located in the PROCTRLS.VCX class library. See the “Setting Up VFP Options for Form and Control Classes” section in the VPM Enterprise Classes chapter in the User’s Guide for a discussion of how to choose the controls class level to use.

The table below lists and shows the hierarchy of the VPM Enterprise control classes.

 

VPM Enterprise Control Classes
checkbox_		Base CheckBox class
combobox_		Base ComboBox class.
commandbutton_		Base CommandButton class.
	commandbutton_toolbar	CommandButton class for toolbar buttons.
container_		Base Container class.
control_		Base Control class.
cursor_		Base Cursor class.
dataenvironment_		Base DataEnvironment class.
editbox_		Base EditBox class.
grid_		Base Grid class.
	grid_toolbar	Grid class for use with a toolbar.
grid_list		Record selection grid class.
hyperlink_		Base Hyperlink class.
image_		Base Image class.
label_		Base Label class.
	label_group	Label class used to identify a grouping of controls.
line_		Base Line class.
listbox_		Base ListBox class.
onform_toolbar		Container class with on-form toolbar.
	onform_toolbar_edit	On-form toolbar with Edit button.
optionbutton_		Base OptionButton class.
optiongroup_		Base OptionGroup class.
page_		Base Page class.
pageframe_		Base PageFrame class.
separator_		Base Separator class.
shape_		Base Shape class.
spinner_		Base Spinner class.
textbox_		Base TextBox class.
textbox_output		Base output Textbox class.
timer_		Base Timer class.

Class Browser

If you want to thoroughly explore a control class, open the class library in the Class Browser, which you can run from the VPM Enterprise Tools menu. Select the class name in the class list. Click on the Class Browser’s View Class Code button to have the Class Browser export the class code to a Window. Then, print the class code. As you view the class code, properties will appear like memory variables and methods will appear as procedures.

Control Classes Properties and Methods

The remaining sections of this chapter describe the properties and methods of the VPM Enterprise control classes listed above that provide custom (non-default) functionality.

More:

CheckBox_ Class Properties and Methods