FIX: Init Event Code to Multilselect List Box Items Fails

• Microsoft Visual FoxPro for Windows, versions 5.0, 5.0a

SYMPTOMS

When you use code in the Init event of a form to multi-select items in a list box, the items are not correctly selected.

This behavior does not occur in Visual FoxPro version 3.0x.

CAUSE

This is a timing problem in Visual FoxPro 5.x.

RESOLUTION

To obtain the proper behavior, you can use a Timer object to control the code that you multi-select.

Steps to Use a Timer Object

1. Create a form with a list box object and name the list box List1.



2. In the Init event of the form , add the following code:




THIS.Timer1.ENABLED = .T. 

3. Add a Timer control to the form and name it Timer1. Set the Interval property to 50.



4. Add the following code to the Timer event of Timer1:




THISFORM.List1.ADDITEM("Red")
      THISFORM.List1.ADDITEM("Green")
      THISFORM.List1.ADDITEM("Blue")
      THISFORM.List1.MULTISELECT = .T.
      THISFORM.List1.SELECTED(2) = .T.
      THISFORM.List1.SELECTED( 3 ) = .T.
      THIS.INTERVAL = 0
      THIS.ENABLED = .F. 

5. Run the form and note that both the second and third items are properly selected.

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article.

This bug was corrected in Visual FoxPro 6.0.

MORE INFORMATION

Steps to Reproduce Behavior

1. Create a form with a list box object and name the list box List1.



2. In the Init event of the form add the following code:




THIS.list1.ADDITEM('red')
      THIS.list1.ADDITEM('green')
      THIS.list1.ADDITEM('blue')
      THIS.list1.MULTISELECT=.T.
      THIS.list1.SELECTED(2)=.T.
      THIS.list1.SELECTED(3)=.T. 

3. Close and then run the form. Note that the third item has a dotted line around it and the second item is not selected when both items should be selected.

Additional query words:

Keywords : kbVFp500abug kbVFp500bug kbVFp600fix kbXBase kbGrpFox
Version : WINDOWS:5.0,5.0a
Platform : WINDOWS
Issue type : kbbug