change ltimevalstuff to a unit and move defintion of ttimeval on windows

[lcore.git] / lmessages.pas

diff --git a/lmessages.pas b/lmessages.pas
index 7bb73fded153a54c69899453e0a10928ace88e4f..b5a6f25594f0a41cc5ca59463898a69a96ae3c0f 100755 (executable)
--- a/lmessages.pas
+++ b/lmessages.pas
@@ -1,9 +1,24 @@
+{ Copyright (C) 2005 Bas Steendijk and Peter Green\r
+  For conditions of distribution and use, see copyright notice in zlib_license.txt\r
+  which is included in the package\r
+  ----------------------------------------------------------------------------- }\r
+\r
+//this unit provides a rough approximation of windows messages on linux\r
+//it is usefull for multithreaded applications on linux to communicate back to\r
+//the main lcore thread\r
+//This unit is *nix only, on windows you should use the real thing\r
+\r
 unit lmessages;\r
 //windows messages like system based on lcore tasks\r
 interface\r
 \r
 uses pgtypes,sysutils,bsearchtree,strings,syncobjs;\r
 \r
+\r
+{$if (fpc_version < 2) or ((fpc_version=2) and ((fpc_release < 2) or ((fpc_release = 2) and (fpc_patch < 2)) ))}\r
+  {$error this code is only supported under fpc 2.2.2 and above due to bugs in the eventobject code in older versions}\r
+{$endif}\r
+\r
 type\r
   lparam=taddrint;\r
   wparam=taddrint;\r
@@ -84,7 +99,7 @@ procedure init;
 \r
 implementation\r
 uses\r
-  baseunix,unix,lcore;//,safewriteln;\r
+  baseunix,unix,lcore,unixutil,ltimevalstuff;//,safewriteln;\r
 {$i unixstuff.inc}\r
 \r
 type\r
@@ -120,7 +135,7 @@ var
   //than crash after over four billion\r
   //windows have been made ;)\r
   nextwindowhandle : qword = $100000000;\r
-{$i ltimevalstuff.inc}\r
+
 \r
 //findthreaddata should only be called while holding the structurelock\r
 function findthreaddata(threadid : integer) : tthreaddata;\r
@@ -394,11 +409,15 @@ begin
       //we have to get the window procedure while the structurelock\r
       //is still held as the window could be destroyed from another thread\r
       //otherwise.\r
-      windowproc := window.windowproc;\r
+      if window <> nil then begin\r
+        windowproc := window.windowproc;\r
+      end else begin\r
+        windowproc := nil;\r
+      end;\r
     finally\r
       structurelock.release;\r
     end;\r
-    if window <> nil then begin\r
+    if assigned(windowproc) then begin\r
       result := windowproc(lpmsg.hwnd,lpmsg.message,lpmsg.wparam,lpmsg.lparam);\r
     end else begin\r
       result := -1;\r
@@ -475,7 +494,7 @@ end;
 \r
 function PeekMessage(var lpMsg: TMsg; hWnd: HWND; wMsgFilterMin, wMsgFilterMax, wRemoveMsg: UINT): WINBOOL;\r
 begin\r
-  result := getmessageinternal(lpmsg,hwnd,wmsgfiltermin,wmsgfiltermax,PM_REMOVE,true);\r
+  result := getmessageinternal(lpmsg,hwnd,wmsgfiltermin,wmsgfiltermax,wRemoveMsg,true);\r
 end;\r
 \r
 function SetEvent(hEvent:THevent):WINBOOL;\r
@@ -653,4 +672,4 @@ begin
   end;\r
 end;\r
 \r
-end.
\ No newline at end of file
+end.\r