Widgets placing into QGridLayout

Question

I use QGridLayout and define layout as ui file.

I need to implement such layout:

|Column 0 |Column 1 |Column 2 |Column 3 |

|width enough to fit text|empty space|Line edit with width 66-70|width enough to fit text|

My problem are columns 1 and 2.

Which size policy should I use to give all the free space to column 1?

I am trying to set min width=66 and max width=70 to Column 2. And "Expanding" width policy to Column 1.

But for some reason, in this case column 1 is expanded more shat it should be and Column 2 has less than 66.

If I set size policy for column 1 as "maximum", than all the space is given to column 2. And width of that column is bigger than line edit widget, so it is not right aligned any more.

Answer 1

You're doing everything right except for the units.

I presume that your line edit's width is given in characters, but it seems like you're using that number to set the widths given in pixels.

I would set it the following way:

qreal em = QFontMetricsF(ui.lineEdit->font()).width('m');
ui.lineEdit->setMinimumWidth(round(em*66));
ui.lineEdit->setMaximumWidth(round(em*70));