This example uses the Flags property to define options for the Open dialog box; hides the Read-Only check box and enables preview image window and the find button.
Private Sub cmdSetFlags_Click()
'Private Sub mnuSetFlags_Click
Const OFN_HIDEREADONLY = &H4&
Const FINDANDPREVIEW = &H40&
'Bitwise OR the flags together
ImgAdmin1.Flags = OFN_HIDEREADONLY + FINDANDPREVIEW
ImgAdmin1.ShowFileDialog OpenDlg
End Sub