执行控制台程序并且获得它的输出结果 |
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前几日遇到的问题在各位的帮助下已经圆满解决，现在吧这段代码写出来，可能会有一点用处。
procedure CheckResult(b: Boolean);
begin
if not b then
Raise Exception.Create(SysErrorMessage(GetLastError));
end;
function RunDOS(const Prog, CommandLine,Dir: String;var ExitCode:DWORD): String;
var
HRead,HWrite:THandle;
StartInfo:TStartupInfo;
ProceInfo:TProcessInformation;
b:Boolean;
sa:TSecurityAttributes;
inS:THandleStream;
sRet:TStrings;
begin
Result := ';
FillChar(sa,sizeof(sa),0);
//设置允许继承，否则在NT和2000下无法取得输出结果
sa.nLength := sizeof(sa);
sa.bInheritHandle := True;
sa.lpSecurityDescriptor := nil;
b := CreatePipe(HRead,HWrite,@sa,0);
CheckResult(b);
FillChar(StartInfo,SizeOf(StartInfo),0);
StartInfo.cb := SizeOf(StartInfo);
StartInfo.wShowWindow := SW_HIDE;
//使用指定的句柄作为标准输入输出的文件句柄,使用指定的显示方式
StartInfo.dwFlags := STARTF_USESTDHANDLES+STARTF_USESHOWWINDOW;
StartInfo.hStdError := HWrite;
StartInfo.hStdInput := GetStdHandle(STD_INPUT_HANDLE);//HRead;
StartInfo.hStdOutput := HWrite;
b := CreateProcess(PChar(Prog),//lpApplicationName: PChar
PChar(CommandLine), //lpCommandLine: PChar
nil, //lpProcessAttributes: PSecurityAttributes
nil, //lpThreadAttributes: PSecurityAttributes
True, //bInheritHandles: BOOL
CREATE_NEW_CONSOLE,
nil,
PChar(Dir),
StartInfo,
ProceInfo );
CheckResult(b);
WaitForSingleObject(ProceInfo.hProcess,INFINITE);
GetExitCodeProcess(ProceInfo.hProcess,ExitCode);
inS := THandleStream.Create(HRead);
if inS.Size>0 then
begin
sRet := TStringList.Create;
sRet.LoadFromStream(inS);
Result := sRet.Text;
sRet.Free;
end;
inS.Free;
CloseHandle(HRead);
CloseHandle(HWrite);
end;
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