MS Excel: Update a cell when a checkbox is clicked (Forms toolbar) in Excel 2003/XP/2000/97
Question: In Microsoft Excel 2003/XP/2000/97, is there a way to link a check box to another cell using the Forms Toolbar? For example, I've made a checkbox and whenever the checkbox is clicked, I would like the current date to automatically appear in another cell. Is this possible?
Also I would like the date to not change whenever the worksheet is opened. For example, if a cell has been set to July 16th and the worksheet is opened on July 17th, I still want the cell to read as July 16th.
Answer: Because you don't want the cell value changing whenever the spreadsheet "recalculates", we'll have to create a macro to determine when to update the cell value.
Let's look at an example.
Download Excel spreadsheet (as demonstrated below)
In our spreadsheet, there are two columns - column A contains a checkbox and column B contains the "linked" cell.
We've created various checkboxes in column A using the Forms toolbar. To view the Forms toolbar, select Toolbars > Forms under the View menu.
When the checkbox in column A is "checked", the associated cell in column B will be updated with the current system date. When the checkbox is "unchecked", the associated cell value will be cleared.
This is accomplished with a macro called Process_Checkbox. You can view the macro by pressing Alt-F11.
The macro determines what row the checkbox resides in and then "sets the value" of the associated cell in column B.
The macro code looks like this:
Sub Process_CheckBox() Dim cBox As CheckBox Dim LRow As Integer Dim LRange As String LName = Application.Caller Set cBox = ActiveSheet.CheckBoxes(LName) 'Find row that checkbox resides in LRow = cBox.TopLeftCell.Row LRange = "B" & CStr(LRow) 'Change date in column B, if checkbox is checked If cBox.Value > 0 Then ActiveSheet.Range(LRange).Value = Date 'Clear date in column B, if checkbox is unchecked Else ActiveSheet.Range(LRange).Value = Null End If End Sub