Offscreen bitmap support, first stab. PixMaps are still treated as ordinary

handles, not fullblown python objects, and UpdateGWorld returns a new GWorld
object in stead of modifying the existing one.

3 files changed, 741 insertions, 0 deletions

diff --git a/Mac/Modules/qdoffs/Qdoffsmodule.c b/Mac/Modules/qdoffs/Qdoffsmodule.c
new file mode 100644
index 0000000..fef251f
--- /dev/null
+++ b/Mac/Modules/qdoffs/Qdoffsmodule.c
@@ -0,0 +1,587 @@
+
+/* ========================= Module Qdoffs ========================== */
+
+#include "Python.h"
+
+
+
+#define SystemSevenOrLater 1
+
+#include "macglue.h"
+#include <Memory.h>
+#include <Dialogs.h>
+#include <Menus.h>
+#include <Controls.h>
+
+extern PyObject *ResObj_New(Handle);
+extern int ResObj_Convert(PyObject *, Handle *);
+extern PyObject *OptResObj_New(Handle);
+extern int OptResObj_Convert(PyObject *, Handle *);
+
+extern PyObject *WinObj_New(WindowPtr);
+extern int WinObj_Convert(PyObject *, WindowPtr *);
+extern PyTypeObject Window_Type;
+#define WinObj_Check(x) ((x)->ob_type == &Window_Type)
+
+extern PyObject *DlgObj_New(DialogPtr);
+extern int DlgObj_Convert(PyObject *, DialogPtr *);
+extern PyTypeObject Dialog_Type;
+#define DlgObj_Check(x) ((x)->ob_type == &Dialog_Type)
+
+extern PyObject *MenuObj_New(MenuHandle);
+extern int MenuObj_Convert(PyObject *, MenuHandle *);
+
+extern PyObject *CtlObj_New(ControlHandle);
+extern int CtlObj_Convert(PyObject *, ControlHandle *);
+
+extern PyObject *GrafObj_New(GrafPtr);
+extern int GrafObj_Convert(PyObject *, GrafPtr *);
+
+extern PyObject *BMObj_New(BitMapPtr);
+extern int BMObj_Convert(PyObject *, BitMapPtr *);
+
+extern PyObject *WinObj_WhichWindow(WindowPtr);
+
+#include <QDOffscreen.h>
+
+#define resNotFound -192 /* Can't include <Errors.h> because of Python's "errors.h" */
+
+
+static PyObject *Qdoffs_Error;
+
+/* ----------------------- Object type GWorld ----------------------- */
+
+PyTypeObject GWorld_Type;
+
+#define GWorldObj_Check(x) ((x)->ob_type == &GWorld_Type)
+
+typedef struct GWorldObject {
+	PyObject_HEAD
+	GWorldPtr ob_itself;
+} GWorldObject;
+
+PyObject *GWorldObj_New(itself)
+	GWorldPtr itself;
+{
+	GWorldObject *it;
+	if (itself == NULL) return PyMac_Error(resNotFound);
+	it = PyObject_NEW(GWorldObject, &GWorld_Type);
+	if (it == NULL) return NULL;
+	it->ob_itself = itself;
+	return (PyObject *)it;
+}
+GWorldObj_Convert(v, p_itself)
+	PyObject *v;
+	GWorldPtr *p_itself;
+{
+	if (!GWorldObj_Check(v))
+	{
+		PyErr_SetString(PyExc_TypeError, "GWorld required");
+		return 0;
+	}
+	*p_itself = ((GWorldObject *)v)->ob_itself;
+	return 1;
+}
+
+static void GWorldObj_dealloc(self)
+	GWorldObject *self;
+{
+	DisposeGWorld(self->ob_itself);
+	PyMem_DEL(self);
+}
+
+static PyObject *GWorldObj_GetGWorldDevice(_self, _args)
+	GWorldObject *_self;
+	PyObject *_args;
+{
+	PyObject *_res = NULL;
+	GDHandle _rv;
+	if (!PyArg_ParseTuple(_args, ""))
+		return NULL;
+	_rv = GetGWorldDevice(_self->ob_itself);
+	_res = Py_BuildValue("O&",
+	                     ResObj_New, _rv);
+	return _res;
+}
+
+static PyObject *GWorldObj_GetGWorldPixMap(_self, _args)
+	GWorldObject *_self;
+	PyObject *_args;
+{
+	PyObject *_res = NULL;
+	PixMapHandle _rv;
+	if (!PyArg_ParseTuple(_args, ""))
+		return NULL;
+	_rv = GetGWorldPixMap(_self->ob_itself);
+	_res = Py_BuildValue("O&",
+	                     ResObj_New, _rv);
+	return _res;
+}
+
+static PyMethodDef GWorldObj_methods[] = {
+	{"GetGWorldDevice", (PyCFunction)GWorldObj_GetGWorldDevice, 1,
+	 "() -> (GDHandle _rv)"},
+	{"GetGWorldPixMap", (PyCFunction)GWorldObj_GetGWorldPixMap, 1,
+	 "() -> (PixMapHandle _rv)"},
+	{NULL, NULL, 0}
+};
+
+PyMethodChain GWorldObj_chain = { GWorldObj_methods, NULL };
+
+static PyObject *GWorldObj_getattr(self, name)
+	GWorldObject *self;
+	char *name;
+{
+	return Py_FindMethodInChain(&GWorldObj_chain, (PyObject *)self, name);
+}
+
+#define GWorldObj_setattr NULL
+
+PyTypeObject GWorld_Type = {
+	PyObject_HEAD_INIT(&PyType_Type)
+	0, /*ob_size*/
+	"GWorld", /*tp_name*/
+	sizeof(GWorldObject), /*tp_basicsize*/
+	0, /*tp_itemsize*/
+	/* methods */
+	(destructor) GWorldObj_dealloc, /*tp_dealloc*/
+	0, /*tp_print*/
+	(getattrfunc) GWorldObj_getattr, /*tp_getattr*/
+	(setattrfunc) GWorldObj_setattr, /*tp_setattr*/
+};
+
+/* --------------------- End object type GWorld --------------------- */
+
+
+static PyObject *Qdoffs_NewGWorld(_self, _args)
+	PyObject *_self;
+	PyObject *_args;
+{
+	PyObject *_res = NULL;
+	QDErr _err;
+	GWorldPtr offscreenGWorld;
+	short PixelDepth;
+	Rect boundsRect;
+	CTabHandle cTable;
+	GDHandle aGDevice;
+	GWorldFlags flags;
+	if (!PyArg_ParseTuple(_args, "hO&O&O&l",
+	                      &PixelDepth,
+	                      PyMac_GetRect, &boundsRect,
+	                      OptResObj_Convert, &cTable,
+	                      OptResObj_Convert, &aGDevice,
+	                      &flags))
+		return NULL;
+	_err = NewGWorld(&offscreenGWorld,
+	                 PixelDepth,
+	                 &boundsRect,
+	                 cTable,
+	                 aGDevice,
+	                 flags);
+	if (_err != noErr) return PyMac_Error(_err);
+	_res = Py_BuildValue("O&",
+	                     GWorldObj_New, offscreenGWorld);
+	return _res;
+}
+
+static PyObject *Qdoffs_LockPixels(_self, _args)
+	PyObject *_self;
+	PyObject *_args;
+{
+	PyObject *_res = NULL;
+	Boolean _rv;
+	PixMapHandle pm;
+	if (!PyArg_ParseTuple(_args, "O&",
+	                      ResObj_Convert, &pm))
+		return NULL;
+	_rv = LockPixels(pm);
+	_res = Py_BuildValue("b",
+	                     _rv);
+	return _res;
+}
+
+static PyObject *Qdoffs_UnlockPixels(_self, _args)
+	PyObject *_self;
+	PyObject *_args;
+{
+	PyObject *_res = NULL;
+	PixMapHandle pm;
+	if (!PyArg_ParseTuple(_args, "O&",
+	                      ResObj_Convert, &pm))
+		return NULL;
+	UnlockPixels(pm);
+	Py_INCREF(Py_None);
+	_res = Py_None;
+	return _res;
+}
+
+static PyObject *Qdoffs_UpdateGWorld(_self, _args)
+	PyObject *_self;
+	PyObject *_args;
+{
+	PyObject *_res = NULL;
+	GWorldFlags _rv;
+	GWorldPtr offscreenGWorld;
+	short pixelDepth;
+	Rect boundsRect;
+	CTabHandle cTable;
+	GDHandle aGDevice;
+	GWorldFlags flags;
+	if (!PyArg_ParseTuple(_args, "hO&O&O&l",
+	                      &pixelDepth,
+	                      PyMac_GetRect, &boundsRect,
+	                      OptResObj_Convert, &cTable,
+	                      OptResObj_Convert, &aGDevice,
+	                      &flags))
+		return NULL;
+	_rv = UpdateGWorld(&offscreenGWorld,
+	                   pixelDepth,
+	                   &boundsRect,
+	                   cTable,
+	                   aGDevice,
+	                   flags);
+	_res = Py_BuildValue("lO&",
+	                     _rv,
+	                     GWorldObj_New, offscreenGWorld);
+	return _res;
+}
+
+static PyObject *Qdoffs_GetGWorld(_self, _args)
+	PyObject *_self;
+	PyObject *_args;
+{
+	PyObject *_res = NULL;
+	CGrafPtr port;
+	GDHandle gdh;
+	if (!PyArg_ParseTuple(_args, ""))
+		return NULL;
+	GetGWorld(&port,
+	          &gdh);
+	_res = Py_BuildValue("O&O&",
+	                     GrafObj_New, port,
+	                     ResObj_New, gdh);
+	return _res;
+}
+
+static PyObject *Qdoffs_SetGWorld(_self, _args)
+	PyObject *_self;
+	PyObject *_args;
+{
+	PyObject *_res = NULL;
+	CGrafPtr port;
+	GDHandle gdh;
+	if (!PyArg_ParseTuple(_args, "O&O&",
+	                      GrafObj_Convert, &port,
+	                      OptResObj_Convert, &gdh))
+		return NULL;
+	SetGWorld(port,
+	          gdh);
+	Py_INCREF(Py_None);
+	_res = Py_None;
+	return _res;
+}
+
+static PyObject *Qdoffs_CTabChanged(_self, _args)
+	PyObject *_self;
+	PyObject *_args;
+{
+	PyObject *_res = NULL;
+	CTabHandle ctab;
+	if (!PyArg_ParseTuple(_args, "O&",
+	                      OptResObj_Convert, &ctab))
+		return NULL;
+	CTabChanged(ctab);
+	Py_INCREF(Py_None);
+	_res = Py_None;
+	return _res;
+}
+
+static PyObject *Qdoffs_PixPatChanged(_self, _args)
+	PyObject *_self;
+	PyObject *_args;
+{
+	PyObject *_res = NULL;
+	PixPatHandle ppat;
+	if (!PyArg_ParseTuple(_args, "O&",
+	                      ResObj_Convert, &ppat))
+		return NULL;
+	PixPatChanged(ppat);
+	Py_INCREF(Py_None);
+	_res = Py_None;
+	return _res;
+}
+
+static PyObject *Qdoffs_PortChanged(_self, _args)
+	PyObject *_self;
+	PyObject *_args;
+{
+	PyObject *_res = NULL;
+	GrafPtr port;
+	if (!PyArg_ParseTuple(_args, "O&",
+	                      GrafObj_Convert, &port))
+		return NULL;
+	PortChanged(port);
+	Py_INCREF(Py_None);
+	_res = Py_None;
+	return _res;
+}
+
+static PyObject *Qdoffs_GDeviceChanged(_self, _args)
+	PyObject *_self;
+	PyObject *_args;
+{
+	PyObject *_res = NULL;
+	GDHandle gdh;
+	if (!PyArg_ParseTuple(_args, "O&",
+	                      OptResObj_Convert, &gdh))
+		return NULL;
+	GDeviceChanged(gdh);
+	Py_INCREF(Py_None);
+	_res = Py_None;
+	return _res;
+}
+
+static PyObject *Qdoffs_AllowPurgePixels(_self, _args)
+	PyObject *_self;
+	PyObject *_args;
+{
+	PyObject *_res = NULL;
+	PixMapHandle pm;
+	if (!PyArg_ParseTuple(_args, "O&",
+	                      ResObj_Convert, &pm))
+		return NULL;
+	AllowPurgePixels(pm);
+	Py_INCREF(Py_None);
+	_res = Py_None;
+	return _res;
+}
+
+static PyObject *Qdoffs_NoPurgePixels(_self, _args)
+	PyObject *_self;
+	PyObject *_args;
+{
+	PyObject *_res = NULL;
+	PixMapHandle pm;
+	if (!PyArg_ParseTuple(_args, "O&",
+	                      ResObj_Convert, &pm))
+		return NULL;
+	NoPurgePixels(pm);
+	Py_INCREF(Py_None);
+	_res = Py_None;
+	return _res;
+}
+
+static PyObject *Qdoffs_GetPixelsState(_self, _args)
+	PyObject *_self;
+	PyObject *_args;
+{
+	PyObject *_res = NULL;
+	GWorldFlags _rv;
+	PixMapHandle pm;
+	if (!PyArg_ParseTuple(_args, "O&",
+	                      ResObj_Convert, &pm))
+		return NULL;
+	_rv = GetPixelsState(pm);
+	_res = Py_BuildValue("l",
+	                     _rv);
+	return _res;
+}
+
+static PyObject *Qdoffs_SetPixelsState(_self, _args)
+	PyObject *_self;
+	PyObject *_args;
+{
+	PyObject *_res = NULL;
+	PixMapHandle pm;
+	GWorldFlags state;
+	if (!PyArg_ParseTuple(_args, "O&l",
+	                      ResObj_Convert, &pm,
+	                      &state))
+		return NULL;
+	SetPixelsState(pm,
+	               state);
+	Py_INCREF(Py_None);
+	_res = Py_None;
+	return _res;
+}
+
+static PyObject *Qdoffs_NewScreenBuffer(_self, _args)
+	PyObject *_self;
+	PyObject *_args;
+{
+	PyObject *_res = NULL;
+	QDErr _err;
+	Rect globalRect;
+	Boolean purgeable;
+	GDHandle gdh;
+	PixMapHandle offscreenPixMap;
+	if (!PyArg_ParseTuple(_args, "O&b",
+	                      PyMac_GetRect, &globalRect,
+	                      &purgeable))
+		return NULL;
+	_err = NewScreenBuffer(&globalRect,
+	                       purgeable,
+	                       &gdh,
+	                       &offscreenPixMap);
+	if (_err != noErr) return PyMac_Error(_err);
+	_res = Py_BuildValue("O&O&",
+	                     ResObj_New, gdh,
+	                     ResObj_New, offscreenPixMap);
+	return _res;
+}
+
+static PyObject *Qdoffs_DisposeScreenBuffer(_self, _args)
+	PyObject *_self;
+	PyObject *_args;
+{
+	PyObject *_res = NULL;
+	PixMapHandle offscreenPixMap;
+	if (!PyArg_ParseTuple(_args, "O&",
+	                      ResObj_Convert, &offscreenPixMap))
+		return NULL;
+	DisposeScreenBuffer(offscreenPixMap);
+	Py_INCREF(Py_None);
+	_res = Py_None;
+	return _res;
+}
+
+static PyObject *Qdoffs_QDDone(_self, _args)
+	PyObject *_self;
+	PyObject *_args;
+{
+	PyObject *_res = NULL;
+	Boolean _rv;
+	GrafPtr port;
+	if (!PyArg_ParseTuple(_args, "O&",
+	                      GrafObj_Convert, &port))
+		return NULL;
+	_rv = QDDone(port);
+	_res = Py_BuildValue("b",
+	                     _rv);
+	return _res;
+}
+
+static PyObject *Qdoffs_OffscreenVersion(_self, _args)
+	PyObject *_self;
+	PyObject *_args;
+{
+	PyObject *_res = NULL;
+	long _rv;
+	if (!PyArg_ParseTuple(_args, ""))
+		return NULL;
+	_rv = OffscreenVersion();
+	_res = Py_BuildValue("l",
+	                     _rv);
+	return _res;
+}
+
+static PyObject *Qdoffs_NewTempScreenBuffer(_self, _args)
+	PyObject *_self;
+	PyObject *_args;
+{
+	PyObject *_res = NULL;
+	QDErr _err;
+	Rect globalRect;
+	Boolean purgeable;
+	GDHandle gdh;
+	PixMapHandle offscreenPixMap;
+	if (!PyArg_ParseTuple(_args, "O&b",
+	                      PyMac_GetRect, &globalRect,
+	                      &purgeable))
+		return NULL;
+	_err = NewTempScreenBuffer(&globalRect,
+	                           purgeable,
+	                           &gdh,
+	                           &offscreenPixMap);
+	if (_err != noErr) return PyMac_Error(_err);
+	_res = Py_BuildValue("O&O&",
+	                     ResObj_New, gdh,
+	                     ResObj_New, offscreenPixMap);
+	return _res;
+}
+
+static PyObject *Qdoffs_PixMap32Bit(_self, _args)
+	PyObject *_self;
+	PyObject *_args;
+{
+	PyObject *_res = NULL;
+	Boolean _rv;
+	PixMapHandle pmHandle;
+	if (!PyArg_ParseTuple(_args, "O&",
+	                      ResObj_Convert, &pmHandle))
+		return NULL;
+	_rv = PixMap32Bit(pmHandle);
+	_res = Py_BuildValue("b",
+	                     _rv);
+	return _res;
+}
+
+static PyMethodDef Qdoffs_methods[] = {
+	{"NewGWorld", (PyCFunction)Qdoffs_NewGWorld, 1,
+	 "(short PixelDepth, Rect boundsRect, CTabHandle cTable, GDHandle aGDevice, GWorldFlags flags) -> (GWorldPtr offscreenGWorld)"},
+	{"LockPixels", (PyCFunction)Qdoffs_LockPixels, 1,
+	 "(PixMapHandle pm) -> (Boolean _rv)"},
+	{"UnlockPixels", (PyCFunction)Qdoffs_UnlockPixels, 1,
+	 "(PixMapHandle pm) -> None"},
+	{"UpdateGWorld", (PyCFunction)Qdoffs_UpdateGWorld, 1,
+	 "(short pixelDepth, Rect boundsRect, CTabHandle cTable, GDHandle aGDevice, GWorldFlags flags) -> (GWorldFlags _rv, GWorldPtr offscreenGWorld)"},
+	{"GetGWorld", (PyCFunction)Qdoffs_GetGWorld, 1,
+	 "() -> (CGrafPtr port, GDHandle gdh)"},
+	{"SetGWorld", (PyCFunction)Qdoffs_SetGWorld, 1,
+	 "(CGrafPtr port, GDHandle gdh) -> None"},
+	{"CTabChanged", (PyCFunction)Qdoffs_CTabChanged, 1,
+	 "(CTabHandle ctab) -> None"},
+	{"PixPatChanged", (PyCFunction)Qdoffs_PixPatChanged, 1,
+	 "(PixPatHandle ppat) -> None"},
+	{"PortChanged", (PyCFunction)Qdoffs_PortChanged, 1,
+	 "(GrafPtr port) -> None"},
+	{"GDeviceChanged", (PyCFunction)Qdoffs_GDeviceChanged, 1,
+	 "(GDHandle gdh) -> None"},
+	{"AllowPurgePixels", (PyCFunction)Qdoffs_AllowPurgePixels, 1,
+	 "(PixMapHandle pm) -> None"},
+	{"NoPurgePixels", (PyCFunction)Qdoffs_NoPurgePixels, 1,
+	 "(PixMapHandle pm) -> None"},
+	{"GetPixelsState", (PyCFunction)Qdoffs_GetPixelsState, 1,
+	 "(PixMapHandle pm) -> (GWorldFlags _rv)"},
+	{"SetPixelsState", (PyCFunction)Qdoffs_SetPixelsState, 1,
+	 "(PixMapHandle pm, GWorldFlags state) -> None"},
+	{"NewScreenBuffer", (PyCFunction)Qdoffs_NewScreenBuffer, 1,
+	 "(Rect globalRect, Boolean purgeable) -> (GDHandle gdh, PixMapHandle offscreenPixMap)"},
+	{"DisposeScreenBuffer", (PyCFunction)Qdoffs_DisposeScreenBuffer, 1,
+	 "(PixMapHandle offscreenPixMap) -> None"},
+	{"QDDone", (PyCFunction)Qdoffs_QDDone, 1,
+	 "(GrafPtr port) -> (Boolean _rv)"},
+	{"OffscreenVersion", (PyCFunction)Qdoffs_OffscreenVersion, 1,
+	 "() -> (long _rv)"},
+	{"NewTempScreenBuffer", (PyCFunction)Qdoffs_NewTempScreenBuffer, 1,
+	 "(Rect globalRect, Boolean purgeable) -> (GDHandle gdh, PixMapHandle offscreenPixMap)"},
+	{"PixMap32Bit", (PyCFunction)Qdoffs_PixMap32Bit, 1,
+	 "(PixMapHandle pmHandle) -> (Boolean _rv)"},
+	{NULL, NULL, 0}
+};
+
+
+
+
+void initQdoffs()
+{
+	PyObject *m;
+	PyObject *d;
+
+
+
+
+	m = Py_InitModule("Qdoffs", Qdoffs_methods);
+	d = PyModule_GetDict(m);
+	Qdoffs_Error = PyMac_GetOSErrException();
+	if (Qdoffs_Error == NULL ||
+	    PyDict_SetItemString(d, "Error", Qdoffs_Error) != 0)
+		Py_FatalError("can't initialize Qdoffs.Error");
+	GWorld_Type.ob_type = &PyType_Type;
+	Py_INCREF(&GWorld_Type);
+	if (PyDict_SetItemString(d, "GWorldType", (PyObject *)&GWorld_Type) != 0)
+		Py_FatalError("can't initialize GWorldType");
+}
+
+/* ======================= End module Qdoffs ======================== */
+
diff --git a/Mac/Modules/qdoffs/qdoffsscan.py b/Mac/Modules/qdoffs/qdoffsscan.py
new file mode 100644
index 0000000..958da97
--- /dev/null
+++ b/Mac/Modules/qdoffs/qdoffsscan.py
@@ -0,0 +1,66 @@
+# Scan an Apple header file, generating a Python file of generator calls.
+import sys
+import os
+BGENDIR=os.path.join(sys.prefix, ':Tools:bgen:bgen')
+sys.path.append(BGENDIR)
+from bgenlocations import TOOLBOXDIR
+
+from scantools import Scanner
+
+def main():
+	input = "QDOffscreen.h"
+	output = "qdoffsgen.py"
+	defsoutput = TOOLBOXDIR + "QDOffscreen.py"
+	scanner = MyScanner(input, output, defsoutput)
+	scanner.scan()
+	scanner.close()
+	print "=== Done scanning and generating, now importing the generated code... ==="
+	import qdoffssupport
+	print "=== Done.  It's up to you to compile it now! ==="
+
+class MyScanner(Scanner):
+
+	def destination(self, type, name, arglist):
+		classname = "Function"
+		listname = "functions"
+		if arglist:
+			t, n, m = arglist[0]
+			if t == "GWorldPtr" and m in ("InMode", "InOutMode"):
+				classname = "Method"
+				listname = "methods"
+		return classname, listname
+
+	def writeinitialdefs(self):
+		self.defsfile.write("def FOUR_CHAR_CODE(x): return x\n")
+
+	def makeblacklistnames(self):
+		return [
+			'DisposeGWorld', # Implied when the object is deleted
+			'NewGWorldFromHBITMAP', # Don't know what the args do
+			'GetGDeviceAttributes', # Doesn't seem to exist
+			]
+
+	def makeblacklisttypes(self):
+		return [
+			"void_ptr",		# GetGDeviceSurface, blacklisted for now
+			"Ptr",			# Again, for now (array is probably ok here)
+			]
+
+	def makerepairinstructions(self):
+		return [
+			
+## 			("UpdateGWorld",
+## 			 [("GWorldPtr", "*", "OutMode")],
+## 			 [("*", "*", "InOutMode")]),
+			 
+			# This one is incorrect: we say that all input gdevices are
+			# optional, but some are not. Most are, however, so users passing
+			# None for non-optional gdevices will get a qd error, I guess, in
+			# stead of a python argument error.
+			([("GDHandle", "*", "InMode")],
+			 [("OptGDHandle", "*", "InMode")]),
+			]
+
+if __name__ == "__main__":
+	main()
+
diff --git a/Mac/Modules/qdoffs/qdoffssupport.py b/Mac/Modules/qdoffs/qdoffssupport.py
new file mode 100644
index 0000000..43e1977
--- /dev/null
+++ b/Mac/Modules/qdoffs/qdoffssupport.py
@@ -0,0 +1,88 @@
+# This script generates a Python interface for an Apple Macintosh Manager.
+# It uses the "bgen" package to generate C code.
+# The function specifications are generated by scanning the mamager's header file,
+# using the "scantools" package (customized for this particular manager).
+
+import string
+
+# Declarations that change for each manager
+MACHEADERFILE = 'QDOffscreen.h'		# The Apple header file
+MODNAME = 'Qdoffs'				# The name of the module
+OBJECTNAME = 'GWorld'			# The basic name of the objects used here
+
+# The following is *usually* unchanged but may still require tuning
+MODPREFIX = MODNAME			# The prefix for module-wide routines
+OBJECTTYPE = OBJECTNAME + 'Ptr'		# The C type used to represent them
+OBJECTPREFIX = OBJECTNAME + 'Obj'	# The prefix for object methods
+INPUTFILE = string.lower(MODPREFIX) + 'gen.py' # The file generated by the scanner
+#EDITFILE = string.lower(MODPREFIX) + 'edit.py' # The manual definitions
+OUTPUTFILE = MODNAME + "module.c"	# The file generated by this program
+
+from macsupport import *
+
+# Create the type objects
+
+GWorldPtr = OpaqueByValueType(OBJECTTYPE, OBJECTPREFIX)
+GWorldFlags = Type("GWorldFlags", "l")
+GDHandle = OpaqueByValueType("GDHandle", "ResObj")
+OptGDHandle = OpaqueByValueType("GDHandle", "OptResObj")
+CTabHandle = OpaqueByValueType("CTabHandle", "OptResObj")
+PixPatHandle = OpaqueByValueType("PixPatHandle", "ResObj")
+PixMapHandle = OpaqueByValueType("PixMapHandle", "ResObj")
+CGrafPtr = OpaqueByValueType("CGrafPtr", "GrafObj")
+GrafPtr = OpaqueByValueType("GrafPtr", "GrafObj")
+QDErr = OSErrType("QDErr", 'h')
+
+includestuff = includestuff + """
+#include <%s>""" % MACHEADERFILE + """
+
+#define resNotFound -192 /* Can't include <Errors.h> because of Python's "errors.h" */
+
+"""
+
+
+class MyObjectDefinition(GlobalObjectDefinition):
+	def outputCheckNewArg(self):
+		Output("if (itself == NULL) return PyMac_Error(resNotFound);")
+## 	def outputInitStructMembers(self):
+## 		GlobalObjectDefinition.outputInitStructMembers(self)
+## 		Output("SetWRefCon(itself, (long)it);")
+## 	def outputCheckConvertArg(self):
+## 		OutLbrace("if (DlgObj_Check(v))")
+## 		Output("*p_itself = ((WindowObject *)v)->ob_itself;")
+## 		Output("return 1;")
+## 		OutRbrace()
+## 		Out("""
+## 		if (v == Py_None) { *p_itself = NULL; return 1; }
+## 		if (PyInt_Check(v)) { *p_itself = (WindowPtr)PyInt_AsLong(v); return 1; }
+## 		""")
+	def outputFreeIt(self, itselfname):
+		Output("DisposeGWorld(%s);", itselfname)
+# From here on it's basically all boiler plate...
+
+# Create the generator groups and link them
+module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff)
+object = MyObjectDefinition(OBJECTNAME, OBJECTPREFIX, OBJECTTYPE)
+module.addobject(object)
+
+
+# Create the generator classes used to populate the lists
+Function = OSErrFunctionGenerator
+Method = OSErrMethodGenerator
+
+# Create and populate the lists
+functions = []
+methods = []
+execfile(INPUTFILE)
+
+
+# add the populated lists to the generator groups
+# (in a different wordl the scan program would generate this)
+for f in functions: module.add(f)
+for f in methods: object.add(f)
+
+
+
+# generate output (open the output file as late as possible)
+SetOutputFileName(OUTPUTFILE)
+module.generate()