>HI,
>
>I have un pageframe and I would want to create and add to it an Checkbox and a text box by program
>
>
>regards

In which page?
Supposing you want to add them in Page1 (or whatever the name of page is)

thisform.PageFrame1.Page1.AddObject("Check1","CheckBox")
thisform.PageFrame1.Page1.AddObject("Text1","TextBox")

WITH thisform.PageFrame1.Page1.Check1
     .Top      = 1
     .Left     = 1
     .Caption  = "Added CheckBox"
     .AutoSize = .t.
     .Value    = .f. && or zero if you want
     .Visible  = .t. && Most important. All programaticly added controls are unvisible by deafult
ENDWITH

WITH thisform.PageFrame1.Page1.Text1
     .Top      = 15
     .Left     = 1
     .Caption  = "Added TextBox"
     .AutoSize = .t.
     .Value    = "Bla Bla"
     .Visible  = .t. && Same as previous
ENDWITH