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| Call to Global Procedure resetting variable |
| Iniciado por guest, 15,feb. 2018 11:57 - 3 respuestas |
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| Publicado el 15,febrero 2018 - 11:57 |
WD22
Hi,
I have a global procedure, say GP_A, which calls another global procedure, GP_B.
In GP_A I am declaring an integer variable called nVar1, giving it a value of e.g. 913. I then call GP_B passing nVar1 as a parameter. GP_B returns a result which is another integer signalling either success or failure of GP_B.
So my code, in GP_A, reads
nVar1 = 913
IF GP_B(nVar1) <> 0 then
//fail code block
End
Info(nVar1)
This code worked fine in WD15, but since I upgraded to WD22 the info statement returns a value of zero, i.e. nVar1 has been reset/overrriden somehow during the call to GP_B.
Can anyone tell me why this might be happening?
GP_B uses either Result 0 or Result -1 to terminate if that helps.
Cheers
Reg |
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| Publicado el 15,febrero 2018 - 12:11 |
Hi,
Quote
SolutionJ-Reg
Can anyone tell me why this might be happening?
Not without seeing the REAL code, no...
Best regards |
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| Publicado el 15,febrero 2018 - 12:15 |
Most probably you are passing nVar1 "by reference"
so your procedure looks like GP_B(nVar)
and you are changing the value of nVar in GP_B, which means it also changes in the calling procedure GP_A
You should define the variable "by copy" like this
GP_B(LOCAL nVar)
Now nVar is in the scope of GP_B only.
But as Fabrice says, we need your actual code to see it this is the case. |
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| Publicado el 15,febrero 2018 - 12:21 |
Hi Aire,
Your suggestion worked, many thanks.
Regards
Reg |
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