[pywin32-checkins] pywin32/win32/Demos win32gui_dialog.py,1.4,1.5

[Mark H. <mha...@us...>]

Update of /cvsroot/pywin32/pywin32/win32/Demos
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv16706

Modified Files:
	win32gui_dialog.py 
Log Message:
Demonstrate the "correct" way to implement a message loop for an 
application.


Index: win32gui_dialog.py
===================================================================
RCS file: /cvsroot/pywin32/pywin32/win32/Demos/win32gui_dialog.py,v
retrieving revision 1.4
retrieving revision 1.5
diff -C2 -d -r1.4 -r1.5
*** win32gui_dialog.py	22 Jul 2004 08:31:23 -0000	1.4
--- win32gui_dialog.py	25 Jan 2005 13:41:47 -0000	1.5
***************
*** 120,124 ****
      ]
  
! class DemoWindow:
      def __init__(self):
          win32gui.InitCommonControls()
--- 120,124 ----
      ]
  
! class DemoWindowBase:
      def __init__(self):
          win32gui.InitCommonControls()
***************
*** 174,183 ****
          return dlg
  
-     def CreateWindow(self):
-         self._DoCreate(win32gui.CreateDialogIndirect)
- 
-     def DoModal(self):
-         return self._DoCreate(win32gui.DialogBoxIndirect)
- 
      def _DoCreate(self, fn):
          message_map = {
--- 174,177 ----
***************
*** 263,273 ****
          self._DoSize(r-l,b-t, 1)
  
-     def OnClose(self, hwnd, msg, wparam, lparam):
-         win32gui.EndDialog(hwnd, 0)
- 
-     def OnDestroy(self, hwnd, msg, wparam, lparam):
-         print "OnDestroy"
-         win32gui.PostQuitMessage(0) # Terminate the app.
- 
      def _DoSize(self, cx, cy, repaint = 1):
          # right-justify the textbox.
--- 257,260 ----
***************
*** 340,350 ****
              print "The selected item is", sel+1
  
  def DemoModal():
!     w=DemoWindow()
      w.DoModal()
- ##    w.CreateWindow()
- ##    win32gui.PumpMessages()
- ##    # Not sure how to kill this loop.
  
  if __name__=='__main__':
      DemoModal()
--- 327,372 ----
              print "The selected item is", sel+1
  
+     # These function differ based on how the window is used, so may be overridden
+     def OnClose(self, hwnd, msg, wparam, lparam):
+         raise NotImplementedError
+ 
+     def OnDestroy(self, hwnd, msg, wparam, lparam):
+         pass
+ 
+ # An implementation suitable for use with the Win32 Window functions (ie, not
+ # a true dialog)
+ class DemoWindow(DemoWindowBase):
+     def CreateWindow(self):
+         # Create the window via CreateDialogBoxIndirect - it can then
+         # work as a "normal" window, once a message loop is established.
+         self._DoCreate(win32gui.CreateDialogIndirect)
+ 
+     def OnClose(self, hwnd, msg, wparam, lparam):
+         win32gui.DestroyWindow(hwnd)
+ 
+     # We need to arrange to a WM_QUIT message to be sent to our
+     # PumpMessages() loop.
+     def OnDestroy(self, hwnd, msg, wparam, lparam):
+         win32gui.PostQuitMessage(0) # Terminate the app.
+ 
+ # An implementation suitable for use with the Win32 Dialog functions.
+ class DemoDialog(DemoWindowBase):
+     def DoModal(self):
+         return self._DoCreate(win32gui.DialogBoxIndirect)
+ 
+     def OnClose(self, hwnd, msg, wparam, lparam):
+         win32gui.EndDialog(hwnd, 0)
+ 
  def DemoModal():
!     w=DemoDialog()
      w.DoModal()
  
+ def DemoCreateWindow():
+     w=DemoWindow()
+     w.CreateWindow()
+     # PumpMessages runs until PostQuitMessage() is called by someone.
+     win32gui.PumpMessages()
+     
  if __name__=='__main__':
      DemoModal()
+     DemoCreateWindow()