WordApplication1.Documents.Open函数的各个变量的含义是什么?怎么赋值?

Question

Delphi6的.尤其是Encoding应该怎么赋值?谢谢!
function  Open(var FileName: OleVariant; var ConfirmConversions: OleVariant; 
                   var ReadOnly: OleVariant; var AddToRecentFiles: OleVariant; 
                   var PasswordDocument: OleVariant; var PasswordTemplate: OleVariant; 
                   var Revert: OleVariant; var WritePasswordDocument: OleVariant; 
                   var WritePasswordTemplate: OleVariant; var Format: OleVariant; 
                   var Encoding: OleVariant; var Visible: OleVariant): WordDocument;

Answer 1

var 
filename, confirmconversions, readonly, addtorecentfiles, 
passworddocument, passwordtemplate, revert, 
writepassworddocument, writepasswordtemplate, format: olevariant; filename := 'c:\aaaaa.doc'; 
confirmconversions := false; 
readonly := false; 
addtorecentfiles := false; 
passworddocument := ''; 
passwordtemplate := ''; 
revert := true; 
writepassworddocument := ''; 
writepasswordtemplate := ''; 
format := wdopenformatdocument; wordapplication.documents.open( filename, confirmconversions, 
readonly, addtorecentfiles, passworddocument, passwordtemplate, 
revert, writepassworddocument, writepasswordtemplate, format );