Qdialog window pops up in the mianwindow window, click QLineEdit can pop-up keyboard input

QDialog dialog.
Dialog. SetWindowModality (Qt: : WindowModal);

Keyboard input in the pop-up "outside the scope of the section, but did not respond to a click on the keyboard in the dialog window within the scope, is actually point to the inside of the dialog window controls

Is the soft keyboard is displayed but can't click on the soft keyboard, click on the original layer interface