Retain current cursor position in QLineEdit

John Hon

Hi all,

I cannot manage to retain my current edit cursor position in QLineEdit widget.

I have a listbox (single selection). When a user clicks on the listbox, the selected item text will appear on the QLineEdit widget.

The retained current position fails after I append a character to the middle of the text. The cursor always moves to the end of text. If I move the cursor to the middle of the text again and append the text, the following cursor position works normally. Here is my code:

void Add_Expense_Type_Window::on_Expense_Type_List_itemSelectionChanged()
{
       ui->Expense_Type_Field->setText(ui->Expense_Type_List->currentItem()->text());
      set_clicked_listbox(true)
};

void Add_Expense_Type_Window::on_Expense_Type_Field_textChanged(QString text_value)
{
     if (get_clicked_listbox() == true)
    {
        ui->Expense_Type_Field->setText(text_value);
        set_clicked_listbox(false);
    }
}

How shall I retain my cursor position when I append a character to the middle of the QLineEdit widget?

Axel Spoerl

@John-Hon
You can read the cursor position before and set it after the text modification.
See here.

John Hon

@Axel-Spoerl said in Retain current cursor position in QLineEdit:

@John-Hon
You can read the cursor position before and set it after the text modification.
See here.

Is there way to prevent cursor position change if I do not want to involve cursorPositionChanged signal overwrite the function call?

Axel Spoerl

@John-Hon
No, but you can block signals while you reset the cursor.