Question

我有一些简单的wxpython GUI，当我点击一个按钮点击时，我想在另一个线程中运行一些io任务（为了不阻止GUI）并在io线程运行时相应地更新GUI（例如，从io线程更新标签：“[io task percentage completed]％”）。

然而，有时它会起作用，有时会抛出异常：

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.)

使用--sync命令运行程序会产生以下错误：

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

我已经读过，不允许从创建GUI的其他线程更新GUI线程，但如果是这种情况，如何完成这个简单的任务？从另一个线程更新GUI。

由于

Answer 1

这里有关于这个主题的大量线程，并且在wxpython wiki上有很好的介绍。查找wx.CallAfter。

wxpython线程化任务并更新GUI原因

1 个答案: