Python GTK拖放验证X11光标锁定在拖放获取数据中

我无法在pygtk中进行拖放验证。我没有主意了，想听听别人的意见

我的目标是只允许删除包含.jpg的文件

具体来说，每当我在拖动动作回调中调用widget.drag\u get\u data时，X11光标就会锁定。由于我必须杀死X11并重新启动所有程序，因此调试变得单调乏味

这是我的源代码，我认为问题具体在于drag\u motion\u cb和drag\u data\u received\u cb方法。我遗漏了以前尝试过的已注释掉的部分

使用Google代码搜索搜索drag\u get\u数据不会显示其他人正在进行高级验证。所以我猜其他人也失败了

我已经没有主意了，如果我不能弄清楚这一点，我将在我的linux端口中只使用简单的DnD，而不进行适当的验证

提前谢谢

drop\u data\u ready=False drop\u出现=False drop_highlight=False 删除数据=无

def drag_data_received_cbself、小部件、上下文、x、y、数据、信息、时间戳： 打印拖拽数据\u已接收\u cb

# Is it something we can handle?

if target == gtk.gdk.atom_intern("text/uri-list", False):
  # Tell data recieved handler (do_drag_data_received) we can actually handle the drop.
  self.drop_occurred = True

  widget.drag_get_data(context,target,timestamp)

  # We can handle this data type.
  return True
else:
  # We cannot handle the drop.
  return False
pass

def drag_drop_cbself，小部件，上下文，x，y，时间戳： target=widget.drag\u dest\u find\u targetcontext，widget.drag\u dest\u get\u target\u list

if not self.drop_data_ready:
  widget.drag_get_data(context, gtk.gdk.atom_intern("text/uri-list",False), timestamp)
  return False



"""
target = widget.drag_dest_find_target(context, widget.drag_dest_get_target_list())
if target == gtk.gdk.atom_intern("text/uri-list", False):
  if True == self.drop_data_ready:
    pass
  else:


    #widget.drag_get_data(context, target, timestamp)
    pass
  """



context.drag_status(gtk.gdk.ACTION_COPY, timestamp)
"""

if target == gtk.gdk.atom_intern("text/uri-list", False):
  if True == self.drop_data_ready:
    if repr(drop_data).find(".jpg") != -1:
      # Tell Gdk we can handle this.
      context.drag_status(gtk.gdk.ACTION_COPY, timestamp)

      # Draw drop highlight (but only once).
      if False == self.drop_highlight:
        widget.drag_highlight()
        self.drop_highlight = True

      # Return here, don't fall through.
      return True
  else:
    # Request drag data from the source.
    widget.drag_get_data(context, target, timestamp)

    # Fall-through to not allowing.
"""

# not something we can handle
#context.drag_status(0, timestamp) # Don't allow drop.
return True


pass

def drag_motion_cbself，小部件，上下文，x，y，时间戳：

# Un-draw the highlight.
if True == self.drop_highlight:
  widget.drag_unhighlight()
  self.drop_highlight = False
pass

def drag_leave_cbself、小部件、上下文、时间戳： 清理拖动数据。 如果True==self.drop\u data\u ready： self.drop_data=None self.drop\u data\u ready=False

def drag_data_received_cb(self, obj, context, x, y, selection, target_id, etime):
    try:
        dtype = selection.get_data_type()
    except AttributeError:## Old PyGTK
        dtype = selection.type
    if dtype=='image/jpeg':
        image_data = selection.data
        ## do somthing with image_data
        return True
    return False

gobject.type_registerTestApp

def主： car=TestApp gtk.main

如果名称=='main'： 主要

---

我认为你必须在drag_data_received_cb中执行类似操作

# Is it something we can handle?

if target == gtk.gdk.atom_intern("text/uri-list", False):
  # Tell data recieved handler (do_drag_data_received) we can actually handle the drop.
  self.drop_occurred = True

  widget.drag_get_data(context,target,timestamp)

  # We can handle this data type.
  return True
else:
  # We cannot handle the drop.
  return False
pass

---

将这些大代码粘贴到pastebin.com之类的地方，因为它可能无法正确显示在滚动条中的滚动条和混合缩进

def drag_data_received_cb(self, obj, context, x, y, selection, target_id, etime):
    try:
        dtype = selection.get_data_type()
    except AttributeError:## Old PyGTK
        dtype = selection.type
    if dtype=='image/jpeg':
        image_data = selection.data
        ## do somthing with image_data
        return True
    return False