QLineEdit inserting from right to left

[ChrisW67]

I think the OP wants the numeric entry to fill from the right with a forced decimal point like a commercial calculator, not text in a RTL language. For example, entering 123.56 one digit at a time...

[       1]
[      12]
[    1.23]
[   12.35]
[  123.56]

[       1]
[      12]
[    1.23]
[   12.35]
[  123.56]

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Simple right-alignment gets part way there, but the input mask causes issues. There should be a way to use the alignment with a QValidator instead of the mask. Have QValidator::validate() remove any non-digit, insert a decimal two chars from the right (if the string is long enough), and set the editor's string.

[Toufikbodo]

If it was intended as said colleague ChrisW67

Thus the solution
QLineEdit=new QLineEdit(this);
QDoubleValidator *myDblVal = new QDoubleValidator(0, 99999999999999, 2,LineEdit );
LineEdit->setValidator(myDblVal);
LineEdit->setAlignment(Qt::AlignRight);