Python Tkinter:将小部件添加到文件对话框
我正在将Tkinter与Python 2.6和2.7一起用于编程图形用户界面.
I am using Tkinter with Python 2.6 and 2.7 for programming graphic user interfaces.
这些用户界面包含用于打开文件和保存tkFileDialog模块中的数据的对话框.我想调整对话框并添加其他条目小部件，例如让用户发表评论.
These User Interfaces contain dialogs for opening files and saving data from the tkFileDialog module. I would like to adapt the dialogs and add some further entry widgets e.g. for letting the user leave comments.
有什么办法吗?
似乎文件对话框直接来自操作系统.在Tkinter中，它们是从tkCommonDialog模块中的Dialog类派生的，并调用框架小部件的tk.call("tk_getSaveFile")方法(在这种情况下为保存数据).
It seems that the file dialogs are taken directly from the operating system. In Tkinter they are derived from the Dialog class in the tkCommonDialog module and call the tk.call("tk_getSaveFile") method of a frame widget (in this case for saving data).
我无法确定此方法的定义位置.
I could not find out where this method is defined.
call method is defined in _tkinter.c, but there is nothing interesting for your particular task there. It just calls a Tcl command, and the command tk_getSaveFile does all the work.
是的，当操作系统上存在本机文件对话框时，tk_getSaveFile会使用它们(例如，在Windows上使用GetSaveFileName).可以在此处添加小部件，但不能不篡改Tk的C源代码.如果您确定您的目标使用非本机Tk对话框，则可以通过从Tk入侵::tk::dialog::file::过程(请参见library/tkfbox.tcl)来向其小部件层次添加一些内容.
And yes, when there is a native file dialog on the operating system, tk_getSaveFile uses them (e.g. GetSaveFileName is used on Windows). It could be possible to add widgets there, but not without tampering with C sources of Tk. If you're sure that your target uses non-native Tk dialogs, you could add something to its widget hierarchy by hacking ::tk::dialog::file:: procedure from Tk (see library/tkfbox.tcl).
我宁愿使用纯Tcl/Tk编写的 tk_getSaveFile的替代实现，并且从不使用操作系统工具.这样，我们可以确保所有操作系统的布局都是相同的，并且不会随着新版本的Tk突然改变.为它周围的python提供便利的API仍然很简单，但是至少有可能.
I would rather take an alternative implementation of tk_getSaveFile, written in pure Tcl/Tk and never using the OS facility. This way, we can be sure that its layout is the same for all OSes, and it won't suddenly change with a new version of Tk. It's still far from trivial to provide a convenient API for python around it, but at least, it is possible.