OpenOffice.Org 1.0 Resource Kit

You can help guide yourself and others through data entry in Calc by restricting cells to receive specific values and ranges of whole numbers , decimal values, dates, and times. You can also specify specific text lengths allowed in cells.

For example, you can have a cell reject decimal or negative entries by setting it up to receive only whole numbers. Or you can set up a cell to reject any text entries longer than 20 characters .

When you set up validity rules for cells, you can also create help text that will pop up when any of the cells is selected, telling the user what's allowed in the cell. You can also provide warnings when invalid entries are made, and allow invalid entries to be either accepted or rejected.

1. Select the cell(s) for which you want to set up validity rules.

   See Selecting Non-Adjacent Cells on page 535.

2. Choose Data > Validity.

3. Set the validity rules, help text, and error messages. Use Figure 22-2 through Figure 22-4 for guidance.

   Figure 22-2. Setting the values for valid entries

   Figure 22-4. Typing the text that will appear on an invalid entry

4. Click OK.

Figure 22-5 shows the results of the settings in Figure 22-2 through Figure 22-4.