how to get SetEnvironmentVariable in batch script

[plouf]

HI

wondering how does SetEnvironmentVariable works

i try SetEnvironmentVariable("filename","abc123.txt")

then in a batch used echo %filename% but i get no results out !?

thanx

[DarkDragon]

HI

wondering how does SetEnvironmentVariable works

i try SetEnvironmentVariable("filename","abc123.txt")

then in a batch used echo %filename% but i get no results out !?

thanx

Did you start the batch script via RunProgram? Processes inherit environment variables throughout their run hierarchy, so the variables of the parent process are given to the child processes at the beginning.

[plouf]

no i start batch via command line (CMD)
my point is to pass a variable back to a script

Pb progran is just (console mode selected in compiler)

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SetEnvironmentVariable("filename","abc123.txt")

batch is

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@purebasicprog.exe
@echo %filename%

[DarkDragon]

no i start batch via command line (CMD)
my point is to pass a variable back to a script

Pb progran is just (console mode selected in compiler)

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SetEnvironmentVariable("filename","abc123.txt")

batch is

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@purebasicprog.exe
@echo %filename%

You cannot pass it back to the parent process. Use the exit code or stdout to communicate to the batch script then.

[Axolotl]

Imho the explanation is correct and there are to possible ways.
1. Make the variable permanent by registry or a tool called setx
2. Create a batch file with @set varname=value and call this batch in your batch file

Maybe this will get you started. (I know, this is no PB code)
The registry keys you should work with are

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HKCU\Environment

or

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HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment

This is where setx stores the definition permanently. Unfortunately you cannot remove a variable with setx, so you have to use the registry like this:
Assuming we want have a variable DEBUG

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; console commands here 
; reg query HKCU\Environment /v DEBUG 
; reg add HKCU\Environment /v DEBUG /d 
; reg delete  HKCU\Environment /v DEBUG /f  
; The operation completed successfully. 
; /f ... forces the deletion