🚀 go-pugleaf

For what you explain I assume that the user will select both the drive
and the installation directory. Then you want the same directory structure
as the default structure below the InstallationDirectory. If this is the
case,
you can use this approach:

1) First Create the Installation Directory as required
   // maybe from a TDirectoryListBox and a TDriveComboBox

    //String InstallationDir = ComposeInstallationDir("D", "nms");
    //String InstallationDir =whatever function you write;
    //String InstallationDir = "C:\\Visinet\\";  //InstallationDir has to
have this format
    String InstallationDir = "D:\\mns\\";         //another example

 2) Then create the directory structure below the Installation directory
    CreateDir(InstallationDir);
    CreateDir(InstallationDir + "Drivers");
    CreateDir(InstallationDir + "FEP");
    CreateDir(InstallationDir + "GUI");
    CreateDir(InstallationDir + "Runtim");

Note that CreateDir() is the VCL function and not the API which has 2
arguments

Rodolfo