diff --git a/packages/extra/opengl/examples/bounce.pp b/packages/extra/opengl/examples/bounce.pp
index 8d7b5da54a..5404ae8245 100644
--- a/packages/extra/opengl/examples/bounce.pp
+++ b/packages/extra/opengl/examples/bounce.pp
@@ -8,6 +8,9 @@
   Converted to Pascal by Peter Vreman
 }
 program bounce;
+
+{$mode objfpc}
+
 uses
   gl,glut;
 
diff --git a/packages/extra/opengl/examples/glutdemo.pp b/packages/extra/opengl/examples/glutdemo.pp
index 4bb8b75586..853a5c8901 100644
--- a/packages/extra/opengl/examples/glutdemo.pp
+++ b/packages/extra/opengl/examples/glutdemo.pp
@@ -6,6 +6,8 @@
   as Public Domain.
 }
 
+{$mode objfpc}
+
 program GLUTDemo;
 uses
   GL, GLU, GLUT;
diff --git a/packages/extra/opengl/examples/morph3d.pp b/packages/extra/opengl/examples/morph3d.pp
index 31d0cf6776..c8ae155865 100644
--- a/packages/extra/opengl/examples/morph3d.pp
+++ b/packages/extra/opengl/examples/morph3d.pp
@@ -34,6 +34,8 @@
 }
 program morph3d;
 
+{$mode objfpc}
+
 {
 This document is VERY incomplete, but tries to describe the mathematics used
 in the program. At this moment it just describes how the polyhedra are
@@ -913,7 +915,10 @@ begin
 end.
 {
   $Log$
-  Revision 1.1  2002-10-13 14:01:45  sg
+  Revision 1.2  2002-12-18 13:33:20  pierre
+   * objfpc mode added to be able to compile the demos correctly from IDE
+
+  Revision 1.1  2002/10/13 14:01:45  sg
   * added the new, adapted OpenGL examples...
 
   Revision 1.4  2002/09/07 15:43:05  peter
diff --git a/packages/extra/opengl/examples/radblur.pp b/packages/extra/opengl/examples/radblur.pp
index 70a5d3b849..080b739a07 100644
--- a/packages/extra/opengl/examples/radblur.pp
+++ b/packages/extra/opengl/examples/radblur.pp
@@ -14,6 +14,8 @@
 //------------------------------------------------------------------------
 program RadialBlur;
 
+{$mode objfpc}
+
 uses GL, GLU, GLUT;
 
 const