Python pythoncom 模块，VT_UNKNOWN 实例源码

我们从Python开源项目中，提取了以下3个代码示例，用于说明如何使用pythoncom.VT_UNKNOWN。

项目：Email_My_PC 作者：Jackeriss | 项目源码 | 文件源码

def update_colinfo(not_used, dir_name, fnames):
    for fname in fnames:
        full_fname=os.path.join(dir_name,fname)
        if os.path.isdir(full_fname):
            print full_fname
            pidl=shell.SHILCreateFromPath(full_fname,0)[0]
            pb=shell.SHGetViewStatePropertyBag(pidl, "Shell", shellcon.SHGVSPB_FOLDERNODEFAULTS, pythoncom.IID_IPropertyBag)
            ## not all folders already have column info, and we're replacing it anyway
            pb.Write('ColInfo', template_stream)
            iunk=pb.Read('ColInfo',pythoncom.VT_UNKNOWN)
            s=iunk.QueryInterface(pythoncom.IID_IStream)
            s.Write(template_colinfo)
            s=None
            ## attribute names read from registry, can't find any way to enumerate IPropertyBag
            for attr in ('Address','Buttons','Col','Vid','WFlags','FFlags','Sort','SortDir','ShowCmd','FolderType','Mode','Rev'):
                pb.Write(attr, template_pb.Read(attr))
            pb=None

项目：remoteControlPPT 作者：htwenning | 项目源码 | 文件源码

def update_colinfo(not_used, dir_name, fnames):
    for fname in fnames:
        full_fname=os.path.join(dir_name,fname)
        if os.path.isdir(full_fname):
            print full_fname
            pidl=shell.SHILCreateFromPath(full_fname,0)[0]
            pb=shell.SHGetViewStatePropertyBag(pidl, "Shell", shellcon.SHGVSPB_FOLDERNODEFAULTS, pythoncom.IID_IPropertyBag)
            ## not all folders already have column info, and we're replacing it anyway
            pb.Write('ColInfo', template_stream)
            iunk=pb.Read('ColInfo',pythoncom.VT_UNKNOWN)
            s=iunk.QueryInterface(pythoncom.IID_IStream)
            s.Write(template_colinfo)
            s=None
            ## attribute names read from registry, can't find any way to enumerate IPropertyBag
            for attr in ('Address','Buttons','Col','Vid','WFlags','FFlags','Sort','SortDir','ShowCmd','FolderType','Mode','Rev'):
                pb.Write(attr, template_pb.Read(attr))
            pb=None

项目：CodeReader 作者：jasonrbr | 项目源码 | 文件源码

def update_colinfo(not_used, dir_name, fnames):
    for fname in fnames:
        full_fname=os.path.join(dir_name,fname)
        if os.path.isdir(full_fname):
            print(full_fname)
            pidl=shell.SHILCreateFromPath(full_fname,0)[0]
            pb=shell.SHGetViewStatePropertyBag(pidl, "Shell", shellcon.SHGVSPB_FOLDERNODEFAULTS, pythoncom.IID_IPropertyBag)
            ## not all folders already have column info, and we're replacing it anyway
            pb.Write('ColInfo', template_stream)
            iunk=pb.Read('ColInfo',pythoncom.VT_UNKNOWN)
            s=iunk.QueryInterface(pythoncom.IID_IStream)
            s.Write(template_colinfo)
            s=None
            ## attribute names read from registry, can't find any way to enumerate IPropertyBag
            for attr in ('Address','Buttons','Col','Vid','WFlags','FFlags','Sort','SortDir','ShowCmd','FolderType','Mode','Rev'):
                pb.Write(attr, template_pb.Read(attr))
            pb=None