Input and output pipe in Lazarus TProcess - process

Question

I would like to make a terminal with a Lazarus GUI application. But I'm in trouble. And I hope someone can help me, please.
Question1: The Chinese and other special chars cannot display normally, I would like to know how to fix this problem.
(code)Class of the thread and "run" button on click event
screenshot
Question2: I want to know how to input some command into the console. I tried to start a Windows cmd, and use "winver" command. But when I click the button, nothing happened.
The send command button

Answer 1

Winver is not console but a GUI program. To run a program with output into memo, use the following code, which retrieves version using the cmd.exe "ver" command. You can try to use this template for the first question too.
unit mainprocesstomemo;
{$mode delphi}{$H+}
interface
uses
Classes, SysUtils, Forms, Controls, Graphics, Dialogs, StdCtrls, Process, Pipes;
Type
{ TForm1 }
TForm1 = class(TForm)
Button1: TButton;
Memo1: TMemo;
procedure Button1Click(Sender: TObject);
private
public
procedure ProcessEvent(Sender,Context : TObject;Status:TRunCommandEventCode;const Message:string);
end;
var
Form1: TForm1;
implementation
{$R *.lfm}
{ TProcessMemo }
Type
TProcessToMemo = class(TProcess)
public
fmemo : Tmemo;
bytesprocessed : integer;
fstringsadded : integer;
function ReadInputStream(p:TInputPipeStream;var BytesRead:integer;var DataLength:integer;var Data:string;MaxLoops:integer=10):boolean;override;
end;
function RunCommandMemo(const exename:TProcessString;const commands:array of TProcessString;out outputstring:string; Options : TProcessOptions = [];SWOptions:TShowWindowOptions=swoNone;memo:TMemo=nil;runrefresh : TOnRunCommandEvent=nil ):boolean;
Var
p : TProcessToMemo;
i,
exitstatus : integer;
ErrorString : String;
begin
p:=TProcessToMemo.create(nil);
if Options<>[] then
P.Options:=Options - [poRunSuspended,poWaitOnExit];
p.options:=p.options+[poRunIdle];
P.ShowWindow:=SwOptions;
p.Executable:=exename;
if high(commands)>=0 then
for i:=low(commands) to high(commands) do
p.Parameters.add(commands[i]);
p.fmemo:=memo;
p.OnRunCommandEvent:=runrefresh;
try
result:=p.RunCommandLoop(outputstring,errorstring,exitstatus)=0;
finally
p.free;
end;
if exitstatus<>0 then result:=false;
end;
{ TForm1 }
procedure TForm1.Button1Click(Sender: TObject);
var s : string;
begin
//RunCommandMemo('testit',[],s,[],swonone,memo1,ProcessEvent);
RunCommandMemo('cmd.exe',['/w','/c','ver'],s,[],swonone,memo1,ProcessEvent);
end;
procedure TForm1.ProcessEvent(Sender, Context: TObject;
Status: TRunCommandEventCode; const Message: string);
begin
if status in [RunCommandIdle, RunCommandFinished] then
begin
if status =RunCommandFinished then
begin
memo1.lines.add(' process finished');
end;
if tprocesstomemo(sender).fstringsadded>0 then
begin
tprocesstomemo(sender).fstringsadded:=0;
// memo1.lines.add('Handle:'+inttostr(tprocesstomemo(sender).ProcessHandle));
memo1.refresh;
end;
sleep(10);
application.ProcessMessages;
end;
end;
{ TProcessToMemo }
function TProcessToMemo.ReadInputStream(p:TInputPipeStream;var BytesRead:integer;var DataLength:integer;var Data:string;MaxLoops:integer=10):boolean;
var lfpos : integer;
crcorrectedpos:integer;
stradded : integer;
newstr : string;
begin
Result:=inherited ReadInputStream(p, BytesRead, DataLength, data, MaxLoops);
if (result) and (bytesread>bytesprocessed)then
begin
stradded:=0;
lfpos:=pos(#10,data,bytesprocessed+1);
while (lfpos<>0) and (lfpos<=bytesread) do
begin
crcorrectedpos:=lfpos;
if (crcorrectedpos>0) and (data[crcorrectedpos-1]=#13) then
dec(crcorrectedpos);
newstr:=copy(data,bytesprocessed+1,crcorrectedpos-bytesprocessed-1);
fmemo.lines.add(newstr);
inc(stradded);
bytesprocessed:=lfpos;
lfpos:=pos(#10,data,bytesprocessed+1);
end;
inc(fstringsadded,stradded); // check idle event.
end;
end;
end.
I don't know minecraft server, and many external programs might do weird things to the console. But a simple combination of programs to test with is here http://www.stack.nl/~marcov/files/processmemodemo.zip