From 86e1fa671b63e026f7dff07122cb1b307b3609f7 Mon Sep 17 00:00:00 2001
From: Jeff Smith <whydoubt@gmail.com>
Date: Sat, 2 Dec 2023 13:59:01 -0600
Subject: [PATCH 1/2] Treat any falsy context as invalid

---
 OpenGL/GL/pointers.py | 2 +-
 OpenGL/contextdata.py | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/OpenGL/GL/pointers.py b/OpenGL/GL/pointers.py
index 1906a081..0c2c15c9 100644
--- a/OpenGL/GL/pointers.py
+++ b/OpenGL/GL/pointers.py
@@ -276,7 +276,7 @@ def glRenderMode( newMode ):
     # Okay, now that the easy cases are out of the way...
     #  Do we have a pre-stored pointer about which the user already knows?
     context = platform.GetCurrentContext()
-    if context == 0:
+    if not context:
         raise error.Error(
             """Returning from glRenderMode without a valid context!"""
         )
diff --git a/OpenGL/contextdata.py b/OpenGL/contextdata.py
index 2639631c..39ae9965 100644
--- a/OpenGL/contextdata.py
+++ b/OpenGL/contextdata.py
@@ -35,7 +35,7 @@ def getContext( context = None ):
     """
     if context is None:
         context = platform.GetCurrentContext()
-        if context == 0:
+        if not context:
             from OpenGL import error
             raise error.Error(
                 """Attempt to retrieve context when no valid context"""

From 43bfebca84b5e255741ed20b188c09dbbbc944a7 Mon Sep 17 00:00:00 2001
From: Jeff Smith <whydoubt@gmail.com>
Date: Sat, 2 Dec 2023 14:02:27 -0600
Subject: [PATCH 2/2] Return type for *GetCurrentContext is a pointer on all
 platforms

---
 OpenGL/platform/darwin.py | 4 +++-
 OpenGL/platform/egl.py    | 4 +++-
 OpenGL/platform/glx.py    | 4 +++-
 3 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/OpenGL/platform/darwin.py b/OpenGL/platform/darwin.py
index bc0516bb..0edabe17 100644
--- a/OpenGL/platform/darwin.py
+++ b/OpenGL/platform/darwin.py
@@ -59,7 +59,9 @@ def GLE(self): return self.GLUT
 
     @baseplatform.lazy_property
     def GetCurrentContext( self ):
-        return self.CGL.CGLGetCurrentContext 
+        CGLGetCurrentContext = self.CGL.CGLGetCurrentContext
+        CGLGetCurrentContext.restype = ctypes.c_void_p
+        return CGLGetCurrentContext
 
     def getGLUTFontPointer( self, constant ):
         """Platform specific function to retrieve a GLUT font pointer
diff --git a/OpenGL/platform/egl.py b/OpenGL/platform/egl.py
index 55fbb0be..5dd3befe 100644
--- a/OpenGL/platform/egl.py
+++ b/OpenGL/platform/egl.py
@@ -103,7 +103,9 @@ def GLE( self ):
     DEFAULT_FUNCTION_TYPE = staticmethod( ctypes.CFUNCTYPE )
     @baseplatform.lazy_property
     def GetCurrentContext( self ):
-        return self.EGL.eglGetCurrentContext
+        eglGetCurrentContext = self.EGL.eglGetCurrentContext
+        eglGetCurrentContext.restype = ctypes.c_void_p
+        return eglGetCurrentContext
 
     def getGLUTFontPointer( self, constant ):
         """Platform specific function to retrieve a GLUT font pointer
diff --git a/OpenGL/platform/glx.py b/OpenGL/platform/glx.py
index 3fd684ac..e425e7bf 100644
--- a/OpenGL/platform/glx.py
+++ b/OpenGL/platform/glx.py
@@ -97,7 +97,9 @@ def GLE(self):
     # really kosher...
     @baseplatform.lazy_property
     def GetCurrentContext(self):
-        return self.GLX.glXGetCurrentContext
+        glXGetCurrentContext = self.GLX.glXGetCurrentContext
+        glXGetCurrentContext.restype = ctypes.c_void_p
+        return glXGetCurrentContext
 
     def getGLUTFontPointer(self, constant):
         """Platform specific function to retrieve a GLUT font pointer