fieldwidth(
DATABASE
,
FIELD
)
The fieldwidth( function returns the width (in the data sheet) of a database field.
Parameters
This function has two parameters:
database – database containing the field, or "" for the current database.
field – the field name.
Description
This function returns the width (in the data sheet) of a database field. The result is a number that is the approximate width in characters (not points). This number is not necessarily an integer.
fieldwidth("Checkbook","Balance") ☞ 11.26
fieldwidth("Checkbook","Memo") ☞ 57.81
Using a Variable for the Field Name
Because the name of the field may be quoted or unquoted in this function, a special technique is necessary if you use a variable to store the name of the field whose properties are required. If you used the following code, where the field name is extracted from an array of field names and stored in the local variable, fldName,
fldName = array(FieldNameList,J,cr())
w = fieldwidth("Checkbook", fldName)
you would get an error message because Panorama would be looking for a field called fldName and it wouldn’t find one. You need to indicate to Panorama that fldName is not the field name but is a formula that will produce the field name. This is done by replacing the single identifier, fldName, with a string that is obviously a formula. Any formula which produces the required field name will do the job but the simplest solution is to add an empty string to the variable:
fldName = array(FieldNameList,J,cr())
w = fieldwidth("Checkbook", ""+fldName)
Panorama then evaluates the formula, ""+fldName and obtains the name of the field.
As a general rule, this technique is necessary whenever you wish to use a variable to store the name of a field passed as a parameter to a statement or function in which the field name parameter may be either quoted or unquoted. These include the datavalue(, fieldalignment(, fieldformula(, fieldnumber(, fieldpattern(, getfieldproperties( and grabfieldtype( functions, and the dozen or so lookup( functions whose parameters include a field name.
See Also
- addfield -- adds a new field to the current database (on the end).
- Adding New Fields -- adding one or more fields to a database.
- autoallfieldwidths -- automatically sets the width of all fields based on the data in each field.
- autofieldwidth -- automatically sets the width of the current field based on the data in it.
- Automatic Field Calculations -- performing formulas automatically when data is entered into a field.
- Automatic Field Code -- running a short program when data is entered into a field.
- automaticfieldchoices -- updates the current field's Choice list with actual data in the database.
- automaticfieldname( -- returns an available field name.
- cell -- enters a value into the currently active field (i.e. cell).
- checkdesignlock -- checks if field structure can be changed, if not, returns an error.
- commonfieldspopup -- pops up a list of common fields, and changes the current field specifications when a field is chosen from this menu.
- Construct Multiple Fields -- using a template to quickly add multiple fields to a database.
- constructfields -- creates one or more new fields based on a template.
- databaseconsoledump -- dumps the raw contents of the specified database to the console in comma delimited format.
- Date Patterns -- control how dates are displayed or converted to text.
- Dates -- working with dates.
- dbinfo( -- gets information about a database: what forms it contains, what fields, what flash art pictures, etc.
- deletefield -- deletes the current field from the database.
- Deleting Fields -- deleting fields from the database.
- Disable Editing of Individual Fields -- disable editing of inidividual database fields in the data sheet and/or forms.
- disablefieldediting -- disables editing for a specified list of database fields (all others are enabled).
- editfield -- begins editing of the specified field.
- editfieldname -- opens the data sheet window's field properties inspector and selects the field name.
- Field Blueprint Dialog -- examining and modifying the raw specification of a field.
- Field Properties -- available field attributes.
- Field Properties Panel -- examining and modifying field attributes.
- Field Width -- adjusting the width of a field in the data sheet.
- fieldalignment( -- returns the alignment of a database field.
- fieldformula( -- returns the formula associated with a database field.
- fieldname -- changes the name of the current field.
- fieldnumber( -- returns the number of a database field (starting with 1).
- fieldpattern( -- returns the output pattern associated with a database field.
- Fields -- introduction to database fields.
- fieldtype -- changes the data type of the current field.
- fieldtypes -- returns a carriage return delimited array with list of fields and field data types.
- fieldtypes( -- returns a carriage return delimited array with a list of the fields and field data types.
- findreplacedialog -- opens the Find & Replace dialog.
- firstcolumn -- moves to the first column in the data sheet (leftmost column).
- getfieldproperties( -- returns a dictionary containing all of the properties of the specified field. (See the setfieldproperties statement if you want to change one or more field properties.)
- hiddenfields( -- returns a list of hidden fields in the curent data sheet window
- hidecurrentfield -- hides the current field in the data sheet.
- hidefieldsbetween -- shows all fields except those in between specified numbers.
- hidelineitemfields -- hides all line item fields.
- hidethesefields -- hides specific fields in the data sheet, making all others visible.
- Hiding and Showing Fields -- temporarily hiding fields in the data sheet.
- info("datatype") -- returns the data type of the current field.
- info("disabledfields") -- returns a list of disabled fields in the current database (fields that cannot be edited).
- info("enabledfields") -- returns a list of enabled fields in the current database (fields that can be edited).
- insertfield -- inserts a new field into the database in front of the current field.
- lastcolumn -- move to the last column in the data sheet (rightmost column).
- Limiting the Maximum Number of Data Sheet Columns -- adjusting the maximum number of columns displayed in data sheet windows.
- Line Item Fields -- are used for repeating items within a record
- mergefieldsdialog -- opens the standard *Merge Fields* dialog.
- Merging Adjacent Fields -- merging two fields into one.
- movefieldbefore -- moves the current field to a new position.
- newdatabasewithfields -- creates a new database with one or more fields.
- newdatabasewithtemplate -- creates a new database with a template.
- Numeric Data -- numeric data (fixed and floating point).
- Numeric Patterns -- control how a number is displayed or converted to text.
- Rearranging Field Order -- rearranging the order of fields in the data sheet.
- reorderfieldsdialog -- opens the Reorder Fields dialog.
- serverdatabaseconsoledump -- dumps the raw contents of the specified database on the server to the console in comma delimited format.
- setfieldnames -- changes the names of all database fields at once.
- setfieldproperties -- modifies one or more properties (name, data type, formula, etc.) of the current field.
- showallfields -- makes every field in the data sheet visible.
- showcolumns -- forces Panorama to display specified fields.
- showfields -- forces Panorama to display specified fields.
- showfieldsbetween -- hides all fields except those in between specified numbers.
- showhidefieldsdialog -- opens the standard Show/Hide Fields dialog (in the Fields menu).
- showthesefields -- makes specific fields in the data sheet visible, hiding all others.
- Smart Dates -- keyboard entry of dates.
- splitfielddialog -- opens the standard *Split Field* dialog.
- Splitting a Field -- splitting a field into two fields.
- tokenname( -- returns the name of a field or variable (instead of the value contained in the field or variables).
- visiblefieldnumbers( -- returns a data array of visible fields (by number) in the data sheet.
- visiblefields( -- returns a list of visible fields in the data sheet.
History
| 10.0 | No change | Carried over from Panorama 6.0. |