PA_FormulaEditor

version 2003

PA_FormulaEditor (defaultTable; text; len) → char

Parameter Type Description
defaultTable short → Default table
text PA_Unistring* → Default formula for the enterable text area
← User formula
len long * → Length of the defaut formula
← Length of the user formula
Function result char ← 1 if the user has validated the dialog box

Description

The routine PA_FormulaEditor displays the 4D standard Formula Editor.

tableNumber

is the number of the table whose fields will fill the main list (this can be changed by the user if he uses the table pop-up menu). If 0 is passed, all tables are listed.

formula

is the formula displayed in the editor.

len

is a pointer to the length of formula . If *len is 0, no default formula will be displayed upon entry.

If the user validates the dialog box, PA_FormulaEditor returns 1 and fills formula with the formula the user has entered. *len contains the length of this formula.

4th Dimension does not execute the formula. This routine is an accessor to the 4th Dimension Formula Editor. Using this routine, the developer can save/execute/tokenize/detokenize user specific formulas.

Example

Execute a user specific formula. 

   void UserFormula ()
   {
      char   *formula;
      long   len;
 
      formula = malloc(32000);
      if(PA_FormulaEditor(0, formula, &len))
         PA_ExecuteMethod(formula);
 
      free(formula);
   }

See Also

PA_Detokenize , PA_ExecuteMethod , PA_Tokenize .

Error Handling

PA_GetLastError

always returns eER_NoErr