I have an app which has only one pushbutton on gui. It starts normally. But after I added lineedit to gui, app starts and freezes for a while. For example when I push keyboard button, nothing was written in lineedit for second. After a second 5-6 charachters was appeared in lineedit. I tried lineedit, textedit and plain textedit and all of them has same effect. Why this happen?
I use Qt 4.8.5
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