| Checking the
"Required Columns" Service As explained in the Advanced DataWindows
session, you can set a column as a "value
required" column. That means, when the
column gets focus, user can’t tab out of the
column unless he enters a value in the column.
However, if the user don’t go into that
column at all, then, PowerBuilder is not going to
force the user for the value. One good thing is
that, you can call FindRequired() function to check columns that needs a
value but has no value, before you save the
changes in the database. If you would like to use
the PFC service instead of calling FindRequired(), first you need to turn on the service:
dw_product.of_SetReqColumn(
TRUE )
To do the actual check call the
following function.
dw_product.of_CheckRequired(
Primary!, ll_Row, ll_Col, &
ls_ColumnName, TRUE
)
| Parameter
No |
Description |
| First |
The buffer to check. Valid
values are Primary!, Filter! |
| Second |
The row number from which the
search should start. PowerBuilder stores
the first error row number in this
parameter. |
| Third |
The first column number from
which the search should start.
PowerBuilder stores the first error
column number in this parameter. |
| Fourth |
After search, PowerBuilder
stores the error column name |
| Fifth |
True/False. True means, search
only those columns that have been changed
or added. Otherwise, PowerBuilder checks
all rows and columns. |
|
