Mega Code Archive
Convert enumerated type values into strings
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Title: Convert enumerated type values into strings?
{
You obtain a string equivalent of an enumerated type value using the
GetEnumName function:
}
function GetEnumName(TypeInfo: PTypeInfo; Value: Integer): string;
{
The first argument is a pointer to the enumerated type s RTTI information,
and the second argument is the ordinal position of the value within the enumerated type.
GetEnumName returns a string representing the corresponding enumerated type value.
You get the ordinal position of an enumerated type value based on a string using the
GetEnumValue function:
}
function GetEnumValue(TypeInfo: PTypeInfo; const Name: string): Integer;
{
Like GetEnumName, the first argument is a pointer to the RTTI information.
The second argument is a string that represents the enumerated type value.
This function returns the ordinal position of the corresponding value.
}
// Example:
// Declare a custom type:
type
TOurType = (otFirst, otSecond, otThird, otForth, otFifth, otLast);
var
Form1: TForm1;
implementation
{$R *.DFM}
uses
TypInfo;
procedure TForm1.Button1Click(Sender: TObject);
var
OT: TOurType;
FT: TFontStyle;
begin
// Enumerate TFontStyle values
// Zeigt alle TFontStyle Werte an
Memo1.Lines.Add('The TFontStyle values:');
for FT := Low(TFontStyle) to High(TFontStyle) do
Memo1.Lines.Add(GetEnumName(TypeInfo(TFontStyle), Ord(FT)));
// Enumerate our custom TOurType values
// Werte vom Benutzerdefiniertern Typ TOurType auflisten.
Memo1.Lines.Add('The TOurType values:');
for OT := Low(TOurType) to High(TOurType) do
Memo1.Lines.Add(GetEnumName(TypeInfo(TOurType), Ord(OT)));
end;
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