OpenEuphoria

Window Notification Messages

• Posted by Bernie Ryan <xotron at localnet.com> Aug 08, 2001
• 496 views

I have mentioned this before and I am still not satified with
using negative decimal numbers in in place of the constants
in the WM_NOTIFY codes ( NMHDR.code )

A Notification code is an UNSIGNED value.

In the windows COMMCTRL.H header
  TTN_FIRST is defined as (0U-520U) -- for tooltips

In the win32lib 
  TTN_FIRST is defined as -520

I think it should be #FFFFFDF8

Also I think that all of the notification codes in COMMCTRL.H header
that are in this (0U-520U) form should NOT be defined with a minus
value but in their long HEX form.

The reason for this is that if you are peeking at a NOTIFICATION
message and you use peek4u ( the logical assumption when checking
notification messages ) you will never see the CORRECT message
to respond to; you have to use peek4s instead.

I think this can cause errors and confuse someone trying to write
new code for the library

I searched through the window examples and win32lib but no one
seems to be using these notification codes.
 
PS: Coming soon WIN32ERU.EX

Bernie
Bernie