In linux every adapter configuration has a file system path, for example the adapter eth0 has all configuration, in some text files located in “/sys/class/net/eth0/”. The file whose name is “address” contains a single line with the mac adrress value.
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function GetLinuxMacAddress(device_name : String): string; const linux_path = '/sys/class/net/%s/address'; var f : textfile; device, path, addr : string; begin Result := ''; path := Format(linux_path,[device_name]); if (not FileExists(path)) then begin Result := ''; end else begin AssignFile(f, path); reset(f); readln(f, addr); closefile(f); Result := addr; end; end; |
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TMiaStruttura = record case integer of 0 : (content : array[0..19] of char); 1 : ( primidue : array[0..1] of char; dalduealquattro : array[0..1] of char; cognome : array[0..15] of char; ) end; |
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procedure TForm7.Button1Click(Sender: TObject); begin a.content := '0123456789ABCDEFGHIL'; ShowMessage(a.dalduealquattro); a.dalduealquattro := 'BB'; ShowMessage(a.content); end; |
thank’s to my self obviusly
Manage a System.string as buffer to copy content of string into a generic TStream:
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Stream.Write(Str[1], StrLen * SizeOf(Str[1])); |
RadStudio 10.4 è una release che promette grandi cose in tutte le aree di questo fantastico ambiente di sviluppo. Facendo un primo giro di test abbiamo notato: Nelle applicazioni FMX abbiamo notato un notevole miglioramento del render dei caratteri Il nuovo sistema LSP (language server protocol) sembra aver reso l’IDE ancora più fluido e produttivo…
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Hide element on click outside, is a must-have functionality for the dropdown menu. Apart from that, it also used in some situations where you need to hide div when the user clicks outside of this element. You can easily hide div or element when click outside of it using jQuery. In the example code snippet,…
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TThreadedMsgEvent = class( TThread ) private FLock : TCriticalSection; FStr : TQueue<String>; FMemo : TMemo; function GetEvent : String; protected procedure Execute; override; public procedure AddEvent( aMsg : String ); constructor Create( AMemo: TMemo ); destructor Destroy; override; end; implementation { TThreadedMsgEvent } procedure TThreadedMsgEvent.AddEvent(aMsg: String); begin FLock.Acquire; FStr.Enqueue( FormatDateTime('DD/MM/YY HH:NN:SS.ZZZ',Now)+ ' : '+ aMsg ); FLock.Release; end; constructor TThreadedMsgEvent.Create(aMemo: TMemo); begin inherited Create(True); FreeOnTerminate := False; FOnMessage := ACallBack; FStr := TQueue<String>.Create(); FLock := TCriticalSection.Create; FMemo := aMemo; Resume; end; destructor TThreadedMsgEvent.Destroy; override; begin FreeAndNil( FStr ); FreeAndNil( FLock ); end; procedure TThreadedMsgEvent.Execute; begin while not Terminated do begin try if (FStr.Count > 0) then begin if Assigned( aMemo ) then begin TThread.synchronize( procedure begin FMemo.Lines.Add( GetEvent ); end; ); end; end; except end; TThread.Sleep(1); end; end; function TThreadedMsgEvent.GetEvent: String; begin FLock.Acquire; result := FStr.Dequeue; FLock.Release; end; |
From post found at: https://stackoverflow.com/questions/17506615/how-to-handle-log-in-a-threaded-manner-in-delphi
