CODEPTR function  

Purpose

Obtain a 32-bit address of a label, Sub, Function, or Fastproc.

Syntax

AddrVar = CODEPTR(Label)

AddrVar = CODEPTR(ProcName)

Remarks

CODEPTR retrieves the address of a Label, Sub, Function, or FastProc.  The first form may be used to get the address of a label located within the same procedure.  The second form is used to obtain the address of a Sub, Function, or FastProc.

CODEPTR is particularly useful when it is necessary to pass the address of a SUB or FUNCTION to PowerBASIC or Windows to specify a Callback Function.

Restrictions

CODEPTR cannot obtain the address of a METHOD or PROPERTY as direct access to them would constitute an illegal operation.

See also

STRPTR, VARPTR, CALL DWORD

Example

#COMPILE EXE
SUB MySub()

END SUB

FUNCTION PBMAIN

  LOCAL MySubPtr AS LONG, X AS STRING

  MySubPtr = CODEPTR(MySub) ' Address of MySub()

  X = "MySub() is located at address " + FORMAT$(MySubPtr))

END FUNCTION