Search results for 'chkdsk'. 1 post(s) found.
2007/09/19 08:09
How to capture the output from a DOS (command/console) Window
2007/09/19 08:09 in Delphi
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.Button1Click(Sender: TObject) ;
procedure 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
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(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;
begin {button 1 code}
RunDosInMemo('chkdsk.exe c:\',Memo1) ;
end;
procedure 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
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(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;
begin {button 1 code}
RunDosInMemo('chkdsk.exe c:\',Memo1) ;
end;
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chkdsk,
Createpipe,
CreateProcess,
DOS Command Capture,
TProcessInformation,
TSecurityAttributes,
TStartUpInfo,
WaitForSingleObject,
Windows API
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