how to hi-jack the button of word\excel 2007\2010 with VSTO

[Lyu KingT]

hi, i need to control the right of a Office document in my Visual Studio Projects, so how to enable or disable the print, what abou edit, save.....


i try to fellow the video
How Do I: Hi-jack or Repurpose a Standard Ribbon Button's Command?
to hi-jack button in word, but failed. the video from MSDN is about outlook 2010 , which has some differences with word/excel....

here is my steps:

1. Add a Ribbon XML item in Word Add-In project;
2. Copy and uncomment CreateRibbonExtensibilityObject() to ThisAddIn.cs;
3. Write OnMySave() in Callbacks region of Ribbon1.cs

public void OnMySave(Office.IRibbonControl control, ref bool cancelDefault)
        {
            System.Windows.Forms.MessageBox.Show("Hi-Jack You");
        }

4. Modify the Ribbon1.xml to:

<?xml version="1.0" encoding="UTF-8"?>
<customUI xmlns="http://schemas.microsoft.com/office/2006/01/customui" onLoad="Ribbon_Load">
  <commands>
    <comand idMso="FileSave" onAction="OnMySave"/>
  </commands>
  <ribbon>
  </ribbon>
</customUI>

5. Debug and click the Save button, no MessageBox…

details of what i want to do:
0. i want to build a simple file management system (FMS) which just manages Word, or Excel files;

1. different users access the FMS with different roles, such as canView, canPrint, canEdit, canDelete...

2. the Word or Excel files will be stored in database by BLOB data type;

3. if the role of a person named Lyu is canView (which means he can not print the document), so when Lyu download the BLOB from database and open the document automatically with Word or Excel Application of which the print button should be disable.

regards...