fix a small error

[lcore.git] / lmessages.pas

diff --git a/lmessages.pas b/lmessages.pas
index 1b7db62b6380bc046dc64b41b2c85a68cad90f86..3aafdca70b52e0287a725a50fa36f4cd371502a3 100755 (executable)
--- a/lmessages.pas
+++ b/lmessages.pas
@@ -409,11 +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
+        windowproc := window.windowproc;\r
+      end else begin
+        windowproc := nil;
+      end;
     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