dcsimg
September 20, 2020
Hot Topics:

Size Up Your Applications with Subclassing

  • By Sam Huggill
  • Send Email »
  • More Articles »

Now the hardcore stuff is out the way, we can test this out. Either add a new form or use the one provided, and copy the following code into it:

Option Explicit

Private Sub Form_Load()
' Start subclassing
FrmHwnd = Me.hwnd
FrmDC = Me.hDC
OldProc = GetWindowLong(FrmHwnd, GWL_WNDPROC)
SetWindowLong FrmHwnd, GWL_WNDPROC, AddressOf WndProc
End Sub

Private Sub Form_Unload(Cancel As Integer)
' End subclassing
SetWindowLong FrmHwnd, GWL_WNDPROC, OldProc
End Sub




Page 3 of 4



This article was originally published on November 20, 2002

Enterprise Development Update

Don't miss an article. Subscribe to our newsletter below.


Thanks for your registration, follow us on our social networks to keep up-to-date