Could anyone please help in explaining the VB code used in batch file

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<pre lang="vb"><pre>
#I am using below code in bat file, but not able to understand the logic in below code since has never worked on vb. Please help me on understanding the below lines of code

:YesNoBox
REM returns 6 = Yes, 7 = No. Type=4 = Yes/No
set YesNo=
set MsgType=4
set heading=%~2
set message=%~1
echo wscript.echo msgbox(WScript.Arguments(0),%MsgType%,WScript.Arguments(1)) >"%temp%\input.vbs"
for /f "tokens=* delims=" %%a in ('cscript //nologo "%temp%\input.vbs" "%message%" "%heading%"') do set YesNo=%%a
exit /b

:MessageBox
set heading=%~2
set message=%~1
echo msgbox WScript.Arguments(0),0,WScript.Arguments(1) >"%temp%\input.vbs"
cscript //nologo "%temp%\input.vbs" "%message%" "%heading%"
exit /b

What I have tried:

Gone through so many links on google, But not able to find the clear answers
Red about wscript and cscript but confused with variable's like

mostly confused with

REM returns 6 = Yes, 7 = No. Type=4 = Yes/No
set YesNo=
set MsgType=4
set heading=%~2
set message=%~1
echo wscript.echo msgbox(WScript.Arguments(0),%MsgType%,WScript.Arguments(1)) >"%temp%\input.vbs

and

:MessageBox
set heading=%~2
set message=%~1
echo msgbox WScript.Arguments(0),0,WScript.Arguments(1) >"%temp%\input.vbs"
cscript //nologo "%temp%\input.vbs" "%message%" "%heading%"

I need to understand each line mentioned in above code

Posted 6-May-18 0:57am

shiv7

Updated 6-May-18 1:43am

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OriginalGriff · Answer 1 · 2018-05-06T01:33:00

Solution 1

That isn't VB.
It's DOS / CMD commands as used inside a batch file.
SET lest you manipulate Environment Variables: Batch files - The SET command[^]
REM is a comment.
ECHO displays text to the user: Help for all Windows 2000 SP 4 commands[^]
CSCRIPT runs a script file: cscript | Microsoft Docs[^] - in this case it runs a VBS file called INPUT.VBS from the TEMP folder, and passes it two Environment Variables that were supplied when teh original batch file was executed, but with any quotes around them removed.

Posted 6-May-18 1:33am

OriginalGriff

Comments

shiv7 6-May-18 7:44am

Thank you, but i am aware of the theoretical explanations about wscript or cscript.

I am confused how its working in combined to batch.

How its using the bat variables

Could you please explain the code above.

shiv7 6-May-18 7:59am

Thanks you "it runs a VBS file called INPUT.VBS from the TEMP folder, and passes it two Environment Variables" cleared one of my doubt.

But how is this working:

REM returns 6 = Yes, 7 = No. Type=4 = Yes/No
set YesNo=
set MsgType=4
set heading=%~2
set message=%~1
echo wscript.echo msgbox(WScript.Arguments(0),%MsgType%,WScript.Arguments(1))

i am confused about %MsgType% ??, REM returns 6 = Yes, 7 = No. Type=4 = Yes/No
set YesNo=
set MsgType=4

OriginalGriff 6-May-18 8:21am

Anything enclosed in '%' characters is an Environment variable. So since you set MsgType to 4 above that that it what %MsgType% will resolve to.

REM is still a comment!

shiv7 6-May-18 8:31am

Thank you so much for clearing my doubts.
Few more things to ask please:

If REM is just a comment then how its working, since 6 is inside a comment.
how 6 and 7 provided inside the REM are impacting the code

if "%YesNo%"=="6" (
echo "hello"
)

OriginalGriff 6-May-18 9:04am

It isn't - it's a comment to tell you, the person reading it what the values should do!