Adding Objects to a Container Class

Visual FoxPro 9.0 SP2

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You can use the ADD OBJECT clause in the DEFINE CLASS command or the AddObject method to add objects to a container.

For example, the following class definition is based on a form. The ADD OBJECT command adds two command buttons to the form:

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DEFINE CLASS myform AS FORM ADD OBJECT cmdOK AS COMMANDBUTTON ADD OBJECT PROTECTED cmdCancel AS COMMANDBUTTON ENDDEFINE

Use the AddObject method to add objects to a container after the container object has been created. For example, the following lines of code create a form object and add two command buttons to it:

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frmMessage = CREATEOBJECT("FORM") frmMessage.AddObject("txt1", "TEXTBOX") frmMessage.AddObject("txt2", "TEXTBOX")

You can also use the AddObject method in the method code of a class. For example, the following class definition uses AddObject in the code associated with the Init event to add a control to a grid column.

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DEFINE CLASS mygrid AS GRID ColumnCount = 3 PROCEDURE Init THIS.Column2.AddObject("cboClient", "COMBOBOX") THIS.Column2.CurrentControl = "cboClient" ENDPROC ENDDEFINE

Adding and Creating Classes in Method Code

Adding Objects to a Container Class

Adding and Creating Classes in Method Code

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