Summary

Remove trailing backslash from INSTALLDIR

Synopsis

By default, MSI appends a backslash to the directory specifiers specified in the Directory Table. To acquire the path specified by INSTALLDIR without the backslash, programmatically remove the trailing backslash from the path itself. This article contains code in InstallScript and VBScript that removes this slash.

Discussion

InstallScript Code

function set_prop()
STRING tmpINSTALLDIR;
STRING svInstalldir[256];
NUMBER nBuffer;

begin
tmpINSTALLDIR = INSTALLDIR;
nBuffer = 256;
StrRemoveLastSlash(tmpINSTALLDIR);
MsiSetProperty(ISMSI_HANDLE,'INSTALLDIR',tmpINSTALLDIR);
end

VBScript Code

sub set_prop()
dim tempInstalldir
tempInstalldir=session.Property('INSTALLDIR')
if Right(tempInstalldir,1)='\' then
tempInstalldir=Left(tempInstalldir,Len(tempInstalldir)-1)
session.Property('INSTALLDIR')= tempInstalldir
MsgBox 'The value of INSTALLDIR is now ' & session.Property('INSTALLDIR')
end if
end sub

Additional Information

For additional information on InstallScript, see the InstallScript Language Reference in the InstallShield Help Library.

For information on VBScript, see the Microsoft article VBScript.