I have a question/problem. Do someone know why it cannot show a TopLevel window after launch FileDialog module?. I explain myself. The programm loads data of a file. I run FileDialag module to choose the file and get the path of the file, and finally I get data of this file. I would like to show a Windows with a waiting message, before the code gets the data of the file, just after of having the file path data. If I run TopLevel just before the FileDialog module, the window is showed and then it is executed the FileDialog code. But if I run FileDialog before, the windows (TopLevel) is showed at the end (not immediately after) of the code when the FileDialog execution has finished. If I remove the file variable (where it saves the file path obteined though FileDialog), the TopLevel windows is showed. Thanks in advance. Kind regards, Ric. I want to execute a secondary windows while I am loading data of a file. Continue reading...