The prowtl( ) function writes a Boolean value to a shared LOGICAL variable.

On successful completion, prowtl( ) returns 0; otherwise, it returns a non-zero value:

Syntax

int 
prowtl ( psymnam, index, var, unknown )
  char *psymnam;
  int   index;
  int   var;
  int   unknown;
psymnam
This input parameter points to the name of the specified shared variable. You supply the name from your OpenEdge application.
index
This input parameter specifies an index value for an array variable. If the variable is not an array, you must set the value of index to 0.
var
This input parameter contains the boolean value for the specified LOGICAL variable. Set var to 1 if you want to assign the value of the variable to TRUE; set it to 0 otherwise.
unknown
If this input parameter contains the value 1, the Unknown value (?) is assigned to the variable. If this input parameter contains the value 0, the input value contained in var is assigned to the variable.

See Also:

prowtc( ) - Write CHARACTER Variable, prowtd( ) - Write DATE Variable, prowti( ) - Write INTEGER Variable, prowtn( ) - Write DECIMAL Variable, prowtr( ) - Write RECID Variable