ReadDouble(ValueName: String): Double;
ValueName - name of the parameter, which value must be obtained.
The ReadDouble method reads real value from binary parameter in the registry without checking parameter availability. If the parameter with the ValueName name does not exist, an exception is thrown.
Executing the example requires that the registry subkey HKEY_CURRENT_USER\Software\MyProject\Params contains a binary parameter with the Param1 name with real number stored in it.
Sub Main;
Var
RegKey, SubKey: IRegistryKey;
d: Double;
Begin
RegKey := RegistryClass.CurrentUser;
SubKey := RegKey.OpenSubKey("Software\MyProject\Params", False);
If SubKey.ValueExists("Param1") Then
d := SubKey.ReadDouble("Param1");
End If;
End Sub Main;
After executing the example the Param1 parameter is searched in the registry subkey HKEY_CURRENT_USER\Software\MyProject\Params. If the parameter exists, the real number that is contained in this parameter is read into the "b" variable.
See also: