uses
Registry;
// Write TDateTime to Registry
procedure Reg_WriteDateTime(dwRootKey: DWord; const sKey: string; const sField: string; aDate: TDateTime);
begin
with TRegistry.Create do
try
RootKey := dwRootKey;
if OpenKey(sKey, True) then
begin
try
WriteBinaryData(sField, aDate, SizeOf(aDate));
finally
CloseKey;
end;
end;
finally
Free;
end;
end;
// Read TDateTime from Registry
function Reg_ReadDateTime(dwRootKey: DWord; const sKey: string; const sField: string) : TDateTime;
begin
Result := 0; // default Return value
with TRegistry.Create do
begin
RootKey := dwRootKey;
if OpenKey(sKey, False) then
begin
try
ReadBinaryData(sField, Result, SizeOf(Result));
finally
CloseKey;
end;
end;
Free;
end;
end;
// Example:
// Write DateTimePicker1's DateTime to Registry
procedure TForm1.Button1Click(Sender: TObject);
begin
Reg_WriteDateTime(HKEY_CURRENT_USER, 'Software\TestXYZ\','DateTime',DateTimePicker1.DateTime);
end;
// Set DateTimePicker1's DateTime from Registry
procedure TForm1.Button2Click(Sender: TObject);
var
ATime: TDateTime;
begin
ATime := Reg_ReadDateTime(HKEY_CURRENT_USER, 'Software\TestXYZ\','DateTime');
if ATime <> 0 then
DateTimePicker1.DateTime := TDateTime(ATime);
end;