Header Object

Article
07/09/2007

Creates a header for a column in a Grid control. Each column in a grid contains a header. A header displays the caption and an image at the top of a column, and it can respond to events. For additional information about creating headers in grids, see Using Controls.

Header

Remarks

Resizing grid column headers does not trigger the Click event for the column header. This affects column separators.

Example

The following example uses the Header object with the Caption property to change the caption of the first header in a grid.

A Grid control is placed on a form and the customer table is opened and its contents displayed in the grid. The Header object and the Caption property are used to specify a different header caption (Customer ID) for the first header in the grid.

The SetAll method is used with the DynamicBackColor property to specify the background colors for the records. If the number of a record displayed in the grid is even, the record's DynamicBackColor is white, otherwise its DynamicBackColor is green. A command button is placed on the form to close the form.

CLOSE ALL  && Close tables and databases
OPEN DATABASE (HOME(2) + 'data\testdata')

USE customer  IN 0  && Opens Customer table

frmMyForm = CREATEOBJECT('form')  && Create a form
frmMyForm.Closable = .f.  && Disable the window pop-up menu
 
frmMyForm.AddObject('cmdCommand1','cmdMyCmdBtn')  && Add Command button
frmMyForm.AddObject('grdGrid1','Grid')  && Add Grid control

frmMyForm.grdGrid1.Left = 25  && Adjust Grid position

frmMyForm.grdGrid1.SetAll("DynamicBackColor", ;
   "IIF(MOD(RECNO( ), 2)=0, RGB(255,255,255) ;
   , RGB(0,255,0))", "Column")  && Alternate white and green records

frmMyForm.grdGrid1.Visible = .T.  && Grid control visible
frmMyForm.cmdCommand1.Visible =.T.  && "Quit" Command button visible
frmMyForm.grdGrid1.Column1.Header1.Caption = 'Customer ID'

frmMyForm.SHOW  && Display the form
READ EVENTS  && Start event processing

DEFINE CLASS cmdMyCmdBtn AS CommandButton  && Create Command button
   Caption = '\<Quit'  && Caption on the Command button
   Cancel = .T.  && Default Cancel Command button (Esc)
   Left = 125  && Command button column
   Top = 210  && Command button row
   Height = 25  && Command button height

   PROCEDURE Click
      CLEAR EVENTS  && Stop event processing, close form
      CLOSE ALL  && Close table and database
ENDDEFINE

Header Object

Remarks

Example

See Also

Reference

Other Resources

Additional resources