Q139308: How to Simulate a Spinner Control for Character Values

Article: Q139308
Product(s): Microsoft FoxPro
Version(s): WINDOWS:3.0
Operating System(s): 
Keyword(s): kbcode
Last Modified: 11-FEB-2000

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The information in this article applies to:

- Microsoft Visual FoxPro for Windows, version 3.0 
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SUMMARY
=======

The current Spinner control only displays numeric Values. This article shows by
example how to simulate a character- or text-based Spinner control. The examples
show continuous looping of the values to be displayed. As an example, when
decrementing from the letter A, the letter Z is displayed rather than not
allowing the Spinner value to move beyond what would normally be a stop point.

MORE INFORMATION
================

Code Sample
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  *Start of Program **************************

  frmSpinners = CREATEOBJECT("frmTextSpinner")
  frmSpinners.show
  READ EVENTS

  DEFINE CLASS frmTextSpinner AS Form

       Top      = 42
       Left     = 36
       Height   = 90
       Width    = 182
       DoCreate = .T.
       Caption  = "Text Spinners"
       Name     = "Form1"

       ADD OBJECT spnSpinner1 AS Spinner WITH ;
            Alignment        = 1, ;
            BackColor        = RGB(192,192,192), ;
            ForeColor        = RGB(192,192,192), ;
            Height           = 25, ;
            Left             = 143, ;
            Margin           = 0, ;
            SpecialEffect    = 1, ;
            SpinnerHighValue = 91.00, ;
            SpinnerLowValue = 64.00, ;
            Top             = 8, ;
            Width           = 15, ;
            Value           = 65.00, ;
            Name            = "spnSpinner1"

       ADD OBJECT txtText1 AS Textbox WITH ;
            BorderStyle = 1, ;
            Value       = "A", ;
            Height      = 25, ;
            Left        = 120, ;
            Top         = 8, ;
            Width       = 23, ;
            Name        = "txtText1"

       ADD OBJECT spnSpinner2 AS Spinner WITH ;
            Alignment        = 1, ;
            BackColor        = RGB(192,192,192), ;
            ForeColor        = RGB(192,192,192), ;
            Height           = 25, ;
            Left             = 46, ;
            Margin           = 0, ;
            SpecialEffect    = 1, ;
            SpinnerHighValue = 91.00, ;
            SpinnerLowValue  = 64.00, ;
            Top              = 8, ;
            Width            = 15, ;
            Value            = 65.00, ;
            Name             = "spnSpinner2"

       ADD OBJECT Label1 AS Label WITH ;
            Alignment   = 2, ;
            BorderStyle = 1, ;
            Caption     = "A", ;
            Height      = 25, ;
            Left        = 24, ;
            Top         = 8, ;
            Width       = 23, ;
            Name        = "Label1"

       ADD OBJECT spnSpinner3 AS Spinner WITH ;
            Alignment        = 1, ;
            BackColor        = RGB(192,192,192), ;
            ForeColor        = RGB(192,192,192), ;
            Height           = 25, ;
            Left             = 142, ;
            Margin           = 0, ;
            SpecialEffect    = 1, ;
            SpinnerHighValue =   8.00, ;
            SpinnerLowValue  =   0.00, ;
            Top   = 49, ;
            Width = 15, ;
            Value = 1.0, ;
            Name  = "spnSpinner3"

       ADD OBJECT Label2 AS Label WITH ;
            BorderStyle = 1, ;
            Caption     = "Monday", ;
            Height      = 25, ;
            Left        = 23, ;
            Top         = 49, ;
            Width       = 120, ;
            Name        = "Label2"

       PROCEDURE spnSpinner1.InteractiveChange
            DO CASE
                 CASE This.Value=91
                      This.Value=65 && Goes a "A" from "Z"
                 CASE This.Value=64
                      This.Value=90 && Goes a "Z" from "A"
            ENDCASE

            ThisForm.txtText1.Value=CHR(This.Value)
            ThisForm.txtText1.SetFocus
       ENDPROC

       PROCEDURE spnSpinner2.InteractiveChange
            DO CASE
                 CASE This.Value=91
                      This.Value=65 && Goes a "A" from "Z"
                 CASE This.Value=64
                      This.Value=90 && Goes a "Z" from "A"
            ENDCASE

            ThisForm.Label1.Caption=CHR(This.Value)
       ENDPROC

       PROCEDURE spnSpinner3.InteractiveChange
            IF This.Value=8
                 This.Value=1 && Goes from "Sunday" to "Monday"
            ENDIF
            IF This.Value=0
                 This.Value=7 && Goes from "Monday" to "Sunday"
            ENDIF

            DO CASE
            CASE This.Value = 1
                 ThisForm.Label2.Caption="Monday"
            CASE This.Value = 2
                 ThisForm.Label2.Caption="Tuesday"
            CASE This.Value = 3
                 ThisForm.Label2.Caption="Wednesday"
            CASE This.Value = 4
                 ThisForm.Label2.Caption="Thursday"
            CASE This.Value = 5
                 ThisForm.Label2.Caption="Friday"
            CASE This.Value = 6
                 ThisForm.Label2.Caption="Saturday"
            CASE This.Value = 7
                 ThisForm.Label2.Caption="Sunday"
            ENDCASE
       ENDPROC
  ENDDEFINE
  *End of Program **************************************

Additional query words: VFoxWin

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Keywords          : kbcode 
Technology        : kbVFPsearch kbAudDeveloper kbVFP300
Version           : WINDOWS:3.0

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