QVariant value = 45.67; float floatValue = value.toFloat(); //convert QVariant value to float
QVariant value = "3.14"; float floatValue = value.toFloat(); //convert QVariant value to floatIn this example, we assigned a string value "3.14" to a QVariant object named value. Then, we converted this QVariant object to a float using toFloat() function and assigned it to a float variable named floatValue. Package library: QtCore library.