Added CanRead()

[wxWidgets.git] / utils / wxPython / src / _extras.py

diff --git a/utils/wxPython/src/_extras.py b/utils/wxPython/src/_extras.py
index 09d5e2b9f653828ee4273b54979180a6c4678b84..11d9bf2d4912b855fef5e2aabc553317a589aab1 100644 (file)
--- a/utils/wxPython/src/_extras.py
+++ b/utils/wxPython/src/_extras.py
@@ -95,6 +95,12 @@ def EVT_CHAR(win, func):
 def EVT_CHAR_HOOK(win, func):
     win.Connect(-1, -1, wxEVT_CHAR_HOOK, func)
 
+def EVT_KEY_DOWN(win, func):
+    win.Connect(-1, -1, wxEVT_KEY_DOWN, func)
+
+def EVT_KEY_UP(win, func):
+    win.Connect(-1, -1, wxEVT_KEY_UP, func)
+
 def EVT_MENU_HIGHLIGHT(win, id, func):
     win.Connect(id, -1, wxEVT_MENU_HIGHLIGHT, func)
 
@@ -586,6 +592,38 @@ class wxAcceleratorTable(wxAcceleratorTablePtr):
         self.this = miscc.new_wxAcceleratorTable(arg0)
         self.thisown = 1
 
+#----------------------------------------------------------------------
+# This helper function will take a wxPython object and convert it to
+# another wxPython object type.  This will not be able to create objects
+# that are derived from wxPython classes by the user, only those that are
+# actually part of wxPython and directly corespond to C++ objects.
+#
+# This is useful in situations where some method returns a generic
+# type such as wxWindow, but you know that it is actually some
+# derived type such as a wxTextCtrl.  You can't call wxTextCtrl specific
+# methods on a wxWindow object, but you can use this function to
+# create a wxTextCtrl object that will pass the same pointer to
+# the C++ code.  You use it like this:
+#
+#    textCtrl = wxPyTypeCast(window, "wxTextCtrl")
+#
+#
+# WARNING:  Using this function to type cast objects into types that
+#           they are not is not recommended and is likely to cause your
+#           program to crash...  Hard.
+#
+
+def wxPyTypeCast(obj, typeStr):
+    if hasattr(obj, "this"):
+        newPtr = ptrcast(obj.this, typeStr+"_p")
+    else:
+        newPtr = ptrcast(obj, typeStr+"_p")
+    theClass = globals()[typeStr+"Ptr"]
+    theObj = theClass(newPtr)
+    theObj.thisown = obj.thisown
+    return theObj
+
+
 #----------------------------------------------------------------------
 
 ##  class wxPyStdOutWindow:
@@ -644,8 +682,8 @@ class wxApp(wxPyApp):
         if filename:
             sys.stdout = sys.stderr = open(filename, 'a')
         else:
-            #raise self.error, 'wxPyStdOutWindow not yet implemented.'
-            self.stdioWin = sys.stdout = sys.stderr = wxPyStdOutWindow()
+            raise self.error, 'wxPyStdOutWindow not yet implemented.'
+            #self.stdioWin = sys.stdout = sys.stderr = wxPyStdOutWindow()
 
     def RestoreStdio(self):
         sys.stdout, sys.stderr = self.saveStdio
@@ -654,3 +692,10 @@ class wxApp(wxPyApp):
 
 
 #----------------------------------------------------------------------------
+# DO NOT hold any other references to this object.  This is how we know when
+# to cleanup system resources that wxWin is holding...
+__cleanMeUp = __wxPyCleanup()
+#----------------------------------------------------------------------------
+
+
+