Solved

Run a command via cmd

Posted on 2010-11-29
1
1,225 Views
Last Modified: 2016-09-29
I'm trying to run cmd.exe with admin privilege and use flushdns on it, how can i do it though ? and catch the output to a TMemo, the attached code is what i'm using but it doesn't seem to flush the DNS cache, where do i put "/flushdhsn" in ?


procedure RunDosInMemo( DosApp: String; AMemo: TMemo ) ;
const
  ReadBuffer = 2400;
var
  Security : TSecurityAttributes;
  ReadPipe, WritePipe : THandle;
  si : TStartUpInfo;
  pi : TProcessInformation;
  Buffer : PAnsiChar;
  BytesRead : DWord;
  Apprunning : DWord;
begin
  With Security do
   begin
    nlength := SizeOf(TSecurityAttributes) ;
    binherithandle := true;
    lpsecuritydescriptor := nil;
   end;
  if Createpipe(ReadPipe, WritePipe, @Security, 0) then
   begin
    Buffer := AllocMem(ReadBuffer + 1);
    FillChar( si, Sizeof(si), #0 );
    si.cb := SizeOf( si );
    si.hStdOutput := WritePipe;
    si.hStdInput := ReadPipe;
    si.dwFlags := STARTF_USESTDHANDLES + STARTF_USESHOWWINDOW;
    si.wShowWindow := SW_HIDE;

    if CreateProcess( PChar(DosApp), '-flushdns', @Security, @Security,
                            TRUE, NORMAL_PRIORITY_CLASS, nil, nil, si, pi)
    then
    begin
     repeat
      Apprunning := WaitForSingleObject( pi.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) ;
         Application.ProcessMessages;
      until (BytesRead < ReadBuffer);
   end;
   FreeMem( Buffer ) ;
   CloseHandle( pi.hProcess ) ;
   CloseHandle( pi.hThread ) ;
   CloseHandle( ReadPipe ) ;
   CloseHandle( WritePipe ) ;
   end;
end;

Open in new window

0
Comment
Question by:rotem156
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 32

Accepted Solution

by:
Ephraim Wangoya earned 500 total points
ID: 34232195
if you are flushing the dns then should be

RunDosInMemo( 'cmd.exe /c ipconfig /flushdns', Memo1 );
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

For a while now I'v been searching for a circular progress control, much like the one you get when first starting your Silverlight application. I found a couple that were written in WPF and there were a few written in Silverlight, but all appeared o…
Entering time in Microsoft Access can be difficult. An input mask often bothers users more than helping them and won't catch all typing errors. This article shows how to create a textbox for 24-hour time input with full validation politely catching …
This is Part 3 in a 3-part series on Experts Exchange to discuss error handling in VBA code written for Excel. Part 1 of this series discussed basic error handling code using VBA. http://www.experts-exchange.com/videos/1478/Excel-Error-Handlin…
This is my first video review of Microsoft Bookings, I will be doing a part two with a bit more information, but wanted to get this out to you folks.

717 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question