Error Handling - Enough To Put In On Error Event

Every form has an on error property.

Is it enough for error handling to code the on error property for each form?
With enough I mean error handling which lets you resume the program.

Ontherwise I have to code (or call a procedure) for each coded event which i wouldn't prefer

For instance now I'm putting error handling in each event but would consider it more efficient if it can be placed once in each form
Private Sub cmdReport_Click()
On Error GoTo Err_cmdReport_Click

Dim stDocName As String

stDocName = "rptOfme"
DoCmd.OpenReport stDocName, acPreview

Exit_cmdReport_Click:
Exit Sub

Err_cmdReport_Click:
MsgBox Err.Description
Resume Exit_cmdReport_Click

End Sub