Problem displaying my main window

[jpn]

But if I want to make changes in the maker file, which I can't do in Designer such as connecting tools->sort to another dialog, I have to generate header file and make changes and add it to project by hand. Is that right?

As the generated header says in the header comment, do never edit them by hand. Your changes will be lost if you ever want do adjust the designed form and the header is generated again. Use either single inheritance or multiple inheritance approach and do the changes in the actual widget/dialog/window class (which loads the designed form).

[Salazaar]

I really don't understand what is described in this link.