PRB: UpDown Control May Not Increment As Expected (189808)


The information in this article applies to:

  • Microsoft Visual Basic Learning Edition for Windows 5.0
  • Microsoft Visual Basic Learning Edition for Windows 6.0
  • Microsoft Visual Basic Professional Edition for Windows 5.0
  • Microsoft Visual Basic Professional Edition for Windows 6.0
  • Microsoft Visual Basic Enterprise Edition for Windows 5.0
  • Microsoft Visual Basic Enterprise Edition for Windows 6.0
This article was previously published under Q189808

SYMPTOMS

When you click the up or down button on an UpDown control, you notice that the value changes by more than the amount specified for the Increment property. For example, if the Increment property is 2, the value of the UpDown control may change by 3 instead of 2.

CAUSE

When you click the up or down button to change the value of an UpDown control, the control will first "normalize" the current value before it is changed by the amount specified in the Increment property. By normalizing the value, the UpDown control may change by more than the amount specified in the Increment property so that the new value is evenly divisible by the Increment.

STATUS

This behavior is by design.

MORE INFORMATION

Steps to Reproduce Behavior

  1. Start a new Standard EXE project. Form1 is created by default.
  2. Choose Components from the Project menu, check "Microsoft Windows Common Controls-2" and click OK. The UpDown control should now be available on the Toolbox.
  3. Add a Textbox control to Form1.
  4. Add an UpDown control to Form1.
  5. Set the properties of the UpDown1 control as follows: 
          BuddyControl = Text1
      BuddyProperty = Text
      Increment = 2
      Max = 13
      Min = 3
      Value = 3
  6. Add the following code to the Form1 module: 
          Option Explicit

      Private Sub Form_Load()
         Text1.Text = UpDown1.Min
      End Sub
  7. Run the project. Form1 appears.
  8. Click once on the up arrow of the UpDown control. Although the Increment property is 2, the value of the UpDown control changes from 3 to 6 rather than 3 to 5.
Modification Type:MajorLast Reviewed:5/13/2003
Keywords:kbprb KB189808
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