Difference between revisions of "DBEDIT()"
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Revision as of 14:56, 27 October 2009
Contents
Purpose
Function to display expressions and records from one or more workareas in a browse style worksurface
Syntax
DBEDIT([<expN1>,<expN2>,<expN3>,< expN4>[,<array1> [, <expC1>[, <array2>[, <array3>[, <expC2> [, <expC3>[, <expC4>[, <array4>[, <expC5> [, <expC6>]]]]]]]]]]])
See Also
ABROWSE(), ACHOICE(), BROWSE, DEFINE TABLE, FUNCTION, MENU BROWSE
Description
The DBEDIT() function is used to display expressions and records from one or more workareas in a browse style worksurface.
Parameters
| Parameters | Description |
|---|---|
| <expN1> | The starting row number of the window. |
| <expN2> | The starting column number of the window. |
| <expN3> | The ending row number of the window. |
| <expN4> | The ending column number of the window. |
| <array1> | The name of an array containing expressions of field names from active workareas. If the array is not specified all fields from the active workarea will be displayed. |
| <expC1> | The name of a user-defined function (UDF) to execute when a key is pressed. This expression must not contain parameters or parentheses. |
| <array2> | The name of an array that contains PICTURE strings to format each column. |
| <array3> | The name of an array which contains headings for each column. Headings may be placed on more than one line if a semicolon is used as a line separator. |
| <expC2> | A character to be used for separating the headings from the field display. |
| <expC3> | A character to be used to separate the columns. |
| <expC4> | A character to be used to separate the column footers from the field display. |
| <array4> | The name of an array that contains column footers. Footers may be placed on more than one line if a semicolon is used as a line separator. |
| <expC5> | A FILTER condition passed as a character string. |
| <expC6> | A WHILE condition passed as a character string. |
UDF Parameters
DBEDIT() passes two parameters to the user-defined function (UDF) <expC2>. The first parameter passed is the status of the DBEDIT() function. The second parameter is a number representing the ordinal position of the field. The following table summarizes the possible values that can be passed.
| Status | Description |
|---|---|
| 0 | DBEDIT() is idle, no keystrokes are pending. |
| 1 | An attempt was made to move beyond the top of the file. |
| 2 | An attempt was made to move beyond the bottom of the file. |
| 3 | The table is empty. |
| 4 | A key other than a cursor navigation key was pressed. The LASTKEY() function can be used to check the key pressed. |
Return Values
The UDF must return one of the following values:
| Value | Description |
|---|---|
| 0 | Quit DBEDIT(). |
| 1 | Continue DBEDIT(). |
| 2 | Reread data, repaint the screen and continue. |
Example
use demo declare flds[fcount()] declare col_header[fcount()] declare col_footer[fcount()] declare pic[fcount for i=1 to fcount() // Load field names flds[i] = field(i) // Load headings col_header[i] = field(i) // Load footers col_footer[i] = field(i) next clear dbedit(4,1,23,71,flds,"db_udf",pic,col_header,; chr(205),chr(186),chr(205),col_footers)
Products
Recital Terminal Developer
