如何在运行时读取控制台应用输出。我启动控制台应用程序,并希望读取控制台应用程序打印的输出。
答案 0 :(得分:13)
这个solution怎么样。
编辑:该链接指向此解决方案(为了清晰易读而删除使用with
):
// The example runs 'chkdsk.exe c:\' and displays the output to Memo1.
// Put a TMemo (Memo1) and a TButton (Button1) on your form. Put this
// code in the OnCLick event procedure for Button1:
procedure TForm1.RunDosInMemo(DosApp:String;AMemo:TMemo) ;
const
ReadBuffer = 2400;
var
Security : TSecurityAttributes;
ReadPipe,
WritePipe : THandle;
start : TStartUpInfo;
ProcessInfo : TProcessInformation;
Buffer : Pchar;
BytesRead : DWord;
Apprunning : DWord;
begin
Security.nlength := SizeOf(TSecurityAttributes) ;
Security.binherithandle := true;
Security.lpsecuritydescriptor := nil;
if Createpipe (ReadPipe, WritePipe, @Security, 0) then
begin
Buffer := AllocMem(ReadBuffer + 1) ;
FillChar(Start,Sizeof(Start),#0) ;
start.cb := SizeOf(start) ;
start.hStdOutput := WritePipe;
start.hStdInput := ReadPipe;
start.dwFlags := STARTF_USESTDHANDLES + STARTF_USESHOWWINDOW;
start.wShowWindow := SW_HIDE;
if CreateProcess(nil,
PChar(DosApp),
@Security,
@Security,
true,
NORMAL_PRIORITY_CLASS,
nil,
nil,
start,
ProcessInfo) then
begin
repeat
Apprunning := WaitForSingleObject(ProcessInfo.hProcess,100);
Application.ProcessMessages;
until (Apprunning <> WAIT_TIMEOUT) ;
repeat
BytesRead := 0;
ReadFile(ReadPipe,Buffer[0],
ReadBuffer,BytesRead,nil) ;
Buffer[BytesRead]:= #0;
OemToAnsi(Buffer,Buffer) ;
AMemo.Text := AMemo.text + String(Buffer) ;
until (BytesRead < ReadBuffer) ;
end;
FreeMem(Buffer) ;
CloseHandle(ProcessInfo.hProcess) ;
CloseHandle(ProcessInfo.hThread) ;
CloseHandle(ReadPipe) ;
CloseHandle(WritePipe) ;
end;
end;
procedure TForm1.Button1Click(Sender: TObject) ;
begin
RunDosInMemo('chkdsk.exe c:\', Memo1) ;
end;
答案 1 :(得分:2)
我通常使用这个移植的FPC代码:http://www.stack.nl/~marcov/processdelphi.zip
它包含一个控制外部程序的类(它是Lazarus用来调用cmdline编译器和其他程序的类)。
文档在这里,但是delphi端口有点旧,因此上述版本中并不存在所有记录的属性。
答案 2 :(得分:1)
只是对Marco答案的一小部分补充,使用TProcess单元已经过彻底解释here
我相信这是最简单的方法。祝你好运!
答案 3 :(得分:0)
只是为了添加更多选项。
两篇基于 Windows API 构建此功能的文章:http://thundaxsoftware.blogspot.com/2012/12/capturing-console-output-with-delphi.html
JediVCL 库(而且它很大,因此拥有和避免它都有优缺点)有一个 TJvCreateProcess
组件。
见https://wiki.delphi-jedi.org/wiki/JVCL_Help:TJvCreateProcess
在安装时:https://github.com/project-jedi/jvcl 可能还有 How to install JVCL packages if the installer failed when I ran it as a non-Administrator User
JediVCL 安装程序使用具有简单界面的小型独立单元 CapExec.pas
。
https://github.com/project-jedi/jvcl/tree/master/jvcl/install/JVCLInstall/Helpers
type
TCaptureLine = procedure(const Line: string; var Aborted: Boolean) of object;
.....
function CaptureExecute(const App, Args, Dir: string; CaptureLine: TCaptureLine;
OnIdle: TNotifyEvent = nil;......): Integer;