How to allow print during password protection???

    I want to know how allow printing when a pdf file with password protection??

    Some of coding as below:

    PDFControl1.SECURITY_UserPassword = 1111
    PDFControl1.SECURITY_Permission = 1

    I found that i can click "print" buttom on adobe reader 9, but the adobe reader version below 9.0 , then i can't print it.

    ps. This case just for password protected pdf file.