Input Parameters | Significance |
DtvLong idf | field Id |
Return Code | Significance |
0 | no error |
In case of multi-line fields in forms (row length > > 1 < ), for compatibility reasons the function returns for the virtual column width the product of row length and column width.
The function is especially useful for dynamic memory allocation before reading a field content. The minimal memory size to be reserved corresponds to the value of the provided virtual column width for both single-line-fields and multi-line-fields in forms
The maximum virtual column width returned by the function is 255 characters, even if it is a longtext field. The real virtual width of a longtext field can only be determined with dal_mas_ret_ltx_fld.
When zero pointers are specified for a measure value, the corresponding value will not be read.