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Editorial Team
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Asked: 2026-05-31T23:00:36+00:00

Is there a Windows API call or Delphi call that will tell me what

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Is there a Windows API call or Delphi call that will tell me what character set Delphi 6 is expecting to be used by numbers by its format conversion routines such as StrToFloat()? For example, how can I find out if Delphi will expect to see a comma or a period for the decimal point?

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1 Answer

  1. Editorial Team

    Not sure if GetLocaleFormatSettings is available in D6. (but it’s not in D5).
    You could use DecimalSeparator global variable (SysUtils).

    StrToFloat:

    The DecimalSeparator global variable defines the character that must
    be used as a decimal point. Thousand separators (ThousandSeparator) and currency symbols
    are not allowed in the string. If S doesn’t contain a valid value,
    StrToFloat raises an EConvertError exception.

    DecimalSeparator is assigned by the SysUtils unit by internally using the GetLocaleInfo API with LCType of LOCALE_SDECIMAL, and maintained automatically in the Forms unit in response to WM_SETTINGSCHANGE (GUI application only).

    Edit:

    • GetLocaleFormatSettings is available since D7.
    • DecimalSeparator is deprecated in newer version of Delphi (Use FormatSettings.DecimalSeparator).
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