[Lazarus] Lazarus and windows messages - how to hook into them ?

[Justin Smyth]

for all those who didnt reply i found the simple answer was to do this put the following in front of my calls to AllocateHWND and DeAllocateHWND TWin32WidgetSet(WidgetSet).

Now it works !!!
  ----- Original Message ----- 
  From: Justin Smyth 
  To: Lazarus mailing list 
  Sent: Sunday, March 21, 2010 1:12 PM
  Subject: [Lazarus] Lazarus and windows messages - how to hook into them ?


  Hi guys


  got a issue where i need to be able to hook into the windows message que so i can trap messages like WM_GRAPHCHANGED etc as i have ported a media player writen around directshow in delphi over to lazarus 64 bit , i would normally use something like Allocatehwnd(procname) to do this bit i can see that for AllocateHWND & DeallocHWND have stubs and are not supported.

  I have tried the CreateWindowEX and it doesnt work i get an exception when i try to use it  ( this has a callback function to pass messages to your procedure...)


  any one got a simple idea how to get this working 


  I have noticed that on interfaces for win32 the widget seems to have it there but i cant call it from my unit.


  Justin Smyth


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