wxpython線程化任務並更新GUI原因

Question

我有一些簡單的wxpython GUI，當我點擊一個按鈕時，我想在另一個線程中運行一些io任務（爲了不阻止GUI）並更新GUI在io線程正在運行時（例如，將標籤更新爲：[io task percentage completed％]）。

但是有時候這工作，有時拋出一個異常：

The program 'python2.7' received an X Window System error. 
This probably reflects a bug in the program. 
The error was 'RenderBadPicture (invalid Picture parameter)'. 
    (Details: serial 14127 error_code 163 request_code 149 minor_code 7) 
    (Note to programmers: normally, X errors are reported asynchronously; 
    that is, you will receive the error a while after causing it. 
    To debug your program, run it with the --sync command line 
    option to change this behavior. You can then get a meaningful 
    backtrace from your debugger if you break on the gdk_x_error() function.) 

運行與--sync命令的程序產生以下錯誤：

[xcb] Unknown request in queue while dequeuing 
[xcb] Most likely this is a multi-threaded client and XInitThreads has not been called 

我已閱讀，這是不允許從另一個線程更新GUI線程，而不是創建GUI的線程，但是如果是這樣的話，如何完成這個簡單的任務？從另一個線程更新GUI。

感謝

Answer 1

已經有噸對這個話題的線索在這裏，而且它很好地覆蓋在wxPython的維基。查找wx.CallAfter。