Mega Code Archive
How to read and store string values fromto the Registry
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Title: How to read and store string-values from/to the Registry
uses
Registry;
function TForm1.RegRead(Mykey, MyField: string): string;
var
Reg: TRegistry;
begin
//Create the Object
Reg := TRegistry.Create;
with Reg do
begin
//Sets the destination for our requests
RootKey := HKEY_LOCAL_MACHINE;
//Check if whe can open our key, if the key dosn't exist, we create it
if OpenKey(MyKey, True) then
begin
//Is our field availbe
if ValueExists(MyField) then
//Read the value from the field
Result := Readstring(MyField)
else
ShowMessage(MyField + ' does not exists under ' + MyKey);
end
else
//There is a big error if we get an errormessage by
//opening/creating the key
ShowMessage('Error opening/creating key : ' + MyKey);
CloseKey;
end;
end;
procedure TForm1.RegWrite(Mykey, MyField, MyValue: string);
var
Reg: TRegistry;
begin
//Create the Object
Reg := TRegistry.Create;
with Reg do
begin
//Sets the destination for our requests
RootKey := HKEY_LOCAL_MACHINE;
//Check if we can open our key, if the key doesn't exist, we create it
if OpenKey(MyKey, True) then
//We don't need to check if the field is available because the
//field is created by writing the value
WriteString(MyField, MyValue)
else
//There is a big error if we gets an errormessage by
//opening/creating the key
ShowMessage('Error opening/creating key : ' + MyKey);
CloseKey;
end;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
RegWrite('SOFTWARE\MyProgramm\', 'Path', 'C:\test.exe');
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
label1.Caption := RegRead('SOFTWARE\MyProgramm', 'Path');
end;
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