| 实例化： | QDoubleValidator |
This element provides a validator for non-integer numbers.
This property holds the validator's minimum acceptable value. By default, this property contains a value of -infinity.
This property holds the validator's maximum number of digits after the decimal point. By default, this property contains a value of 1000.
This property holds the notation of how a string can describe a number.
The possible values for this property are:
If this property is set to DoubleValidator .ScientificNotation, the written number may have an exponent part (e.g. 1.5E-2).
This property holds the validator's maximum acceptable value. By default, this property contains a value of infinity.
