BUG: BackColor/ForeColor of Grid Not Carried Over to Subclass

• Microsoft Visual FoxPro for Windows, versions 5.0, 5.0a, 6.0

SYMPTOMS

When changing the BackColor or ForeColor properties of a grid class's header in the Class Designer to some other color, the grid header remains in the default color after subclassing the class on to a new form.

RESOLUTION

• Create the grid class definition through code, then add the grid to the form using the AddObject method. Please see step 1 in the Workaround section for further instruction.
  
  -or-



• Change the Backcolor or ForeColor properties of the Header in the subclassing grid.

STATUS

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

MORE INFORMATION

The behavior as described in the SYMPTOMS section, does not occur if the grid is created through code rather than using the class designer.

Steps to Reproduce Behavior

1. Create a Grid class in Class Designer, named the class mygrid and save the class in myclass library.



2. Change the ColumnCount property of the grid to 1.



3. Go to the header object of the grid and change the following properties of the header object:

   BackColor = 255,0,0 ForeColor = 0,255,0




4. Close the class designer.



5. Create a new form in a form designer, named myform.



6. Add the myclass class library to the Form Controls toolbar.



7. Select mygrid from the toolbar and place it onto the form.

Workaround

1. Create a program (.prg) named Gridclass.prg and put the following code in the .prg file:

   
         DEFINE CLASS grid1 AS Grid
            ADD OBJECT column11 AS column1
         ENDDEFINE
   
         DEFINE CLASS column1 AS Column
            Width = 120
            ADD OBJECT header11 AS header1
         ENDDEFINE
   
         DEFINE CLASS header1 AS Header
            ForeColor = rgb(0,255,0)
            BackColor=rgb(255,0,0)
         ENDDEFINE 




2. Create a form and in the Init event of the form place the following code:

   
         SET PROCEDURE TO gridclass.prg
         Thisform.AddObject("mygrid","grid1")
         Thisform.mygrid.Visible = .T. 




3. Run the form and the grid header shows up with the backcolor and forecolor you expect.

Additional query words: kbVFp600bug kbVFp500abug kbCtrl kbContainer kbDesigner kbOOP

Keywords :
Version : WINDOWS:5.0,5.0a,6.0
Platform : WINDOWS
Issue type : kbbug