[Hwgui-developers] Yet another problem with recent changes ( to Luiz )

[Alexander S.K. <al...@be...>]

Luiz,

  there is yet another problem - in December you have changed the
  default return code of the window procedures ( DefWndProc ) from -1
  to 0. Could you explain, why ?

  The code -1 was chosen to say the callback function MainWndProc()
  that it should call windows default message handling procedure
  DefWindowProc(). Return codes 0 and 1 ( FALSE and TRUE ) are used by
  Windows API for it's own purposes.
  Currently, the replacing -1 with 0 causes, for example incorrect
  displaying of the Treeview control ( see hello.prg ) and,
  potentially, other problems, too.
  
  If there won't be objections, I'll revert that change.

Regards,
 Alexander
http://kresin.belgorod.su