formated number in CEdit

Hi,

I have a dialog that contains CEdit boxes. They are attached to a member, as m_fValue. When m_fValue is close to 0, but not exactly 0 as 5.675799877e-10, I see only 5.6757 in the CEdit ! So the user get a wrong information.

I can replace m_fValue by m_sValue and use m_sValue.Format("%5.3f",&m_fValue), but this is not elegant and I have to take care about the relevant format for each CEdit box.

Is there an elegant way ?

[ric]

I am not sure, but I think you variable is float. Make it double and everything will be ok.

This is not a problem with float or double. This is only with display: my CEdit box is to small to display all characters, so the user don't the last characters so he gets the impression that the number is far form 0 !!!!

Is there any possibility to force an appropriate display for numbers close to 0

[Erich Ruth]

I am not sure whether this will help, but you can force a display by typing

SetDlgItemText(IDC_EDITxx, "0.0");

and you could setup something like

if (m_fvalue < .00001) SetDlgItemText(....)

I hope this helps.

[Le Sant Yves]

This helps, but if I have to check values, I will prefer to write something like:

1) add a member m_sValue to the CEdit

2) when m_fValue is updated,

m_sValue.Format("%7.3f",m_fValue);
UpdateData(FALSE);

And this is what I don't want to do, but it works...

Yves Le Sant
Metrology and Measurement Unit
Fundamental and Experimental Aerodynamics Departement
ONERA Meudon
(Office National d'Etudes et de Recherches Aérospatiales)
FRANCE