BUG: BackColor/ForeColor of Grid Not Carried Over to Subclass (191997)


The information in this article applies to:

  • Microsoft Visual FoxPro for Windows 5.0
  • Microsoft Visual FoxPro for Windows 5.0a
  • Microsoft Visual FoxPro for Windows 6.0
This article was previously published under Q191997

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.
The Header of the grid object shows up as default color, which is gray for the backcolor and black for the forecolor.

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.
Modification Type:MajorLast Reviewed:8/19/1999
Keywords:kbbug KB191997
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