IsDeclared
From AutoIt Wiki
Check if a variable has been declared. Adapted from AutoIt docs.
Contents |
Syntax
$chk = IsDeclared(expr)
Parameters
| expr | String representing name of the variable to be checked. |
Return Value
Success: Returns 1 for Global variable or variable declared outside functions.
Special: -1 for Local variable.
Failure: Returns 0 when no variable can be found.
Example
If Not IsDeclared ("a") then
MsgBox(0,"", "$a is NOT declared") ; $a has never been assigned
EndIf
$a=1
If IsDeclared ("a") then
MsgBox(0,"", "$a IS declared" ) ; due to previous $a=1 assignment
EndIf
