BUG: Container Property of DBGrid Does Not Behave Correctly

• Microsoft Visual Basic Standard, Professional, and Enterprise Editions, 16-bit and 32-bit, for Windows, version 4.0

SYMPTOMS

If the container property of the DBGrid control is changed at run time, subsequent changes to the DBGrid's properties will still reflect the initial container. If the Name property of the Container object (that is, DBGrid1.Container.Name) is examined, it will return the newly set container, but the DBGrid itself will not honor this change.

WORKAROUND

To work around this problem, place the DBGrid control inside another container (such as a PictureBox or Frame), size this container, and set properties so that the DBGrid appears as normal, and then set the properties of this container instead of the properties of the DBGrid.

Steps 5 - 9 of the reproduction sample below demonstrate this workaround.

STATUS

Microsoft has confirmed this to be an issue in the Microsoft products listed at the beginning of this article. Microsoft is researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.

MORE INFORMATION

Steps to Reproduce

1. Start Visual Basic 4.0. Form1 is created by default.



2. Add a single DBGrid control to the form. Also click and drag a single picture box onto the same form.



3. Add the following code to the form's Form_Click event:

   
      Private Sub Form_Click()
         Set DBGrid1.Container = Picture1
         DBGrid1.Left = 0
         DBGrid1.Top = 0
      End Sub 




4. Press F5 or select Start from the Run menu to run the application. Click on the form and notice that the DBGrid moves to the upper-left corner of the form instead of the upper-left corner of the picture box control.

1. Add an additional PictureBox to the form (Picture2 by default).



2. Delete the currently existing DBGrid and then draw a new DBGrid inside of the Picture2 PictureBox control.



3. Set the BorderStyle property of Picture2 to '0 - None'. Move the DBGrid and resize Picture2 so that the picture box control just surrounds the DBGrid and so that the picture control does not appear visible.



4. Modify the Form_Click event to contain this code:

   
      Private Sub Form_Click()
         Set Picture2.Container = Picture1
         Picture2.Left = 0
         Picture2.Top = 0
      End Sub 




5. Press F5 or select Start from the Run menu to run the application. Click the form and observe how the DBGrid now moves to the upper-left corner of the first picture box, not the form. In this sample, if you wanted to change the properties of the DBGrid, you would change the properties of Picture2 instead.

Additional query words: 4.00 vb4win vb4all

Keywords : PrgCtrlsCus
Version : 4.00 | 4.00
Platform : NT WINDOWS
Issue type :