Thats excellent Tim, I was just about to start digging around for information
on how to get the data once it's dropped.
Thanks for your help
Alex
> Date: Fri, 25 Apr 2008 17:16:34 +0100
> From: [EMAIL PROTECTED]
> CC: python-win32@python.org
> Subject: Re: [python-win32] Creating python com objects
>
> Well, for those of you still watching this show (!) and
> just in case anyone comes along in the future with the
> same question, I attach below a small working example
> which will accept one or more files dropped onto its
> Window. It doesn't do anything with the files, bar pull
> their names from the relevant data structure, but that's
> up to the specific application.
>
> Many thanks to Roger for the critical info to get this
> working and to Alex for asking the question which started
> it off.
>
> TJG
>
> <code>
> import os, sys
> import win32gui
> import win32con
> import pythoncom
> import win32com.server.policy
> from win32com.shell import shell, shellcon
>
> # clsid generated by pythoncom.CreateGuid ()
> CLSID = '{89DD545A-2C83-4103-AFE3-6CEB7FF5ECA4}'
> PROGID = "Tim.DropTarget"
> DESC = "Drop target handler for Tim"
>
> class DropTarget (win32com.server.policy.DesignatedWrapPolicy):
> _reg_clsid_ = CLSID
> _reg_progid_ = PROGID
> _reg_desc_ = DESC
> _public_methods_ = ['DragEnter', 'DragOver', 'DragLeave', 'Drop']
> _com_interfaces_ = [pythoncom.IID_IDropTarget]
>
> def __init__ (self, hWnd):
> self._wrap_ (self)
> self.hWnd = hWnd
>
> def DragEnter (self, data_object, key_state, point, effect):
> if data_object.QueryGetData ((15, None, 1, -1, 1)):
> return shellcon.DROPEFFECT_COPY
> else:
> return shellcon.DROPEFFECT_NONE
> def DragOver (self, key_state, point, effect):
> pass
> def DragLeave (self):
> pass
> def Drop (self, data_object, key_state, point, effect):
> data = data_object.GetData ((15, None, 1, -1, 1))
> n_files = shell.DragQueryFileW (data.data_handle, -1)
> filenames = [
> shell.DragQueryFileW (data.data_handle, n_file) \
> for n_file in range (n_files)
> ]
>
> def create_window ():
> def OnDestroy (hwnd, msg, wparam, lparam):
> win32gui.PostQuitMessage (0)
>
> wc = win32gui.WNDCLASS ()
> hinst = win32gui.GetModuleHandle(None)
> wc.lpszClassName = "DragDrop"
> wc.style = win32con.CS_VREDRAW | win32con.CS_HREDRAW;
> wc.hCursor = win32gui.LoadCursor (0, win32con.IDC_ARROW)
> wc.hbrBackground = win32con.COLOR_WINDOW
> wc.lpfnWndProc = {win32con.WM_DESTROY : OnDestroy}
> classAtom = win32gui.RegisterClass (wc)
> style = win32con.WS_VISIBLE | win32con.WS_OVERLAPPED \
> | win32con.WS_SYSMENU
> return win32gui.CreateWindow (
> classAtom,
> "Drag & Drop demo",
> style,
> 0, 0, 100, 100,
> 0, 0, hinst, None
> )
>
> if __name__ == '__main__':
> pythoncom.OleInitialize ()
> hWnd = create_window ()
> drop_target = DropTarget (hWnd)
> pythoncom.RegisterDragDrop (
> hWnd,
> pythoncom.WrapObject (
> drop_target,
> pythoncom.IID_IDropTarget,
> pythoncom.IID_IDropTarget
> )
> )
> win32gui.PumpMessages ()
>
> </code>
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