[pygtk] Re: gtk.Clipboard and custom selection targets under win32

[Richard Procter]

On 2/10/2007, at 1:13 PM, Richard Procter wrote:

> Hi all,
>
> I'm trying to share application-specific data between my program  
> instances using the gtk.Clipboard and a custom target to  
> distinguish it from normal text.

I found a workaround which appears to work: use  
gtk.gdk.SELECTION_TYPE_BITMAP for the target type instead of STRING.

def get_f(clipboard, selection, target_handle, userdata):
     selection.set(gtk.gdk.SELECTION_TYPE_BITMAP, 8, "Hello there")

I don't know whether this type guarantees that the data will to be  
copied verbatim.

regards,
Richard.

> The following snippets work on linux but not on win32, where it  
> gives the warning:
> copy:13: GtkWarning: gdk_property_change: assertion `type !=  
> GDK_TARGET_STRING' failed
> This appears to come from gdk/win32/gdkproperty-win32.c
>
> Has anyone used custom selection targets under win32 with more  
> success?
>
> regards,
> Richard.
>
> The 'copy' process
> """
> import pygtk
> pygtk.require('2.0')
> import gtk
>
> def get_f(clipboard, selection, target_handle, userdata):
>     selection.set("STRING", 8, "Hello there")
>
> def clear_f(clipboard, userdata):
>     pass
>
> targets = [("Foobar", 0, 0)]
> gtk.clipboard_get().set_with_data(targets, get_f, clear_f)
> gtk.main()
> """
>
> The 'paste' process
> """
> import pygtk
> pygtk.require('2.0')
> import gtk
>
> def request_f(clipboard, selection, userdata):
>     print "Target ", selection.target
>     print "Type ", selection.type
>     print "Format ", selection.format
>     print "Data in selection is ", selection.data
>
> gtk.clipboard_get().request_contents("Foobar", request_f)
> gtk.main()
> """
>
> Under linux, the string in the custom target is copied successfully:
> """
> Target  Foobar
> Type  STRING
> Format  8
> Data in selection is  Hello there
> """
>
> Under win32, I get
> copy:13: GtkWarning: gdk_property_change: assertion `type !=  
> GDK_TARGET_STRING' failed
>
> win32 (Windows 2000 SP4):
> gtk.pygtk_version == (2, 8, 6) or (2, 10, 6)
> gtk.gtk_version == (2, 8, 10)  or (2, 10, 11)
> python 2.4
>
> linux:
> gtk.pygtk_version == (2, 8, 6)
> gtk.gtk_version == (2, 8, 20)
> python 2.4
>