Saving Programmatically-Created Form & Data Environment to SCX

• Microsoft Visual FoxPro for Windows, version 3.0

SUMMARY

When creating a form programmatically, you may want to add a data environment to the form. This article illustrates one method you can use to create a form and add a data environment to that form programmatically.

MORE INFORMATION

When you create a form programmatically, the DataEnvironment property cannot be used to pass a table to the form because it is a read-only property. Therefore, to add a data environment to a form programmatically, you must create the data environment object separately during the creation of the form. Then, you must use the SaveAs method to save both the form and the data environment in the new form (.scx) file. The following code illustrates this technique.

Code Sample

*-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

     BEGIN CODE SEGMENT

SET DEFAULT TO C:\VFP\SAMPLES\DATA

oMyForm1=CREATEOBJECT('Form') oMyDE1 =CREATEOBJECT('DataEnvironment')

oMyDE1.ADDOBJECT('Curs1', 'Cursor') oMyDE1.Curs1.DataBase='TESTDATA.DBC' oMyDE1.Curs1.CursorSource='Customer'

oMyForm1.ADDOBJECT('Txt1', 'TextBox') oMyForm1.Txt1.ControlSource='Customer_ID' oMyForm1.Txt1.Visible=.T.

*-- You can add as many objects as you want. *-- Use the form's SaveAs method to save everything *-- to an .scx File. This is actually how the DE *-- is associated to the form.

oMyForm1.SaveAs('MyForm2', oMyDE1)

*-- Note that the second parameter specifies the *-- associated Data Environment

RELEASE oMyForm1

DO FORM MyForm2

*-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

     END CODE SEGMENT

You can also use the following command to open the form in design mode:

   MODIFY FORM MyForm2