To remove the read-only checkbox from a common dialog control, add the following constant declaration to the module:
Global Const OFN_HIDEREADONLY = &H4&
Then, while calling the common dialog, write the following code:
Private Sub Command1_Click() CommonDialog1.Flags=OFN_HIDEREADONLY CommonDialog1.ShowOpenEnd Sub
When the Open File dialog box opens, it won’t have the read-only checkbox.