Question

Delete file

Asked by: beyuslu

Hi;

I want use this dos command "del/s c:\*.kek" on delphi form.

this code "WinExec(pchar('C:\WINDOWS\system32\cmd.exe/c del/s c:\*.kek'),SW_HIDE)" not running on delphi.  

How i can fix this problem

Thanks

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Asked On
2009-10-12 at 12:28:29ID24805652
Tags

file

Topic

Delphi Programming

Participating Experts
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Answers

 

by: mokulePosted on 2009-10-12 at 12:31:58ID: 25554235

Hi,
There are many solutions.
One is to create bat file containig this command and execute it.

regards
mokule

 

by: ThievingSixPosted on 2009-10-12 at 13:16:08ID: 25554594

Looks like you forgot a space after cmd.exe.

 

by: MerijnBPosted on 2009-10-12 at 13:38:28ID: 25554798

Why are you using WinExec on a shell command to delete a file? There is DeleteFile()

 

by: senadPosted on 2009-10-12 at 14:11:36ID: 25555102

How about :

If FileExists('c:\*.kek') Then
   DeleteFile('c:\*.kek');

 

by: beyusluPosted on 2009-10-12 at 23:42:16ID: 25557427

senad:

Thank u for reply. but i dont know files which directory. othwerwise i want scan all driver c. an than i want that delete file found file after. you got it?

 

by: Geert_GruwezPosted on 2009-10-13 at 00:10:15ID: 25557578

create a batch file first

procedure TForm1.CreateBatchDelete(FileName: string);
var List: TStringList;
begin
  List := TStringList.Create;
  try
    List.Add('del /s c:\*.kek');
    // add /q for quiet mode
    // add /f to force delete read only files
    List.SaveToFile(FileName);
  finally
    List.Free;
  end;
end;

to run the batch, use this:
uses ShellApi;

procedure TForm1.RunBatch(FileName: string);
begin
  ShellExecute(0, 'open', FileName, nil, nil, SW_HIDE);
end;

to start it all:

procedure TForm1.Button1Click(Sender: TObject);
var FileName: string;
begin
  FileName := ChangeFileExt(ParamStr(0), '') + '_batch_delete.cmd';
  CreateBatchDelete(FileName);
  RunBatch(FileName);
end;

 

by: beyusluPosted on 2009-10-13 at 05:07:16ID: 25559035

geert this is not running.

Example:

- Scan all *.kek from Driver C:
- all delete *.kek file.

Do it on delphi form  this.

 

by: Geert_GruwezPosted on 2009-10-13 at 05:08:39ID: 25559045

and what if you would use SW_SHOWNORMAL ?

  ShellExecute(0, 'open', FileName, nil, nil, SW_SHOWNORMAL );

 

by: senadPosted on 2009-10-13 at 14:50:31ID: 25565177

for a batch file you need the full path also.
so batch file in your case is out of the question.
so what you want is to trigger the delete files on your entire drive (or drives)
with *.kek extension.Yes ???

 

by: senadPosted on 2009-10-13 at 14:59:09ID: 25565248

for a batch file you need the full path also.
so batch file in your case is out of the question.
so what you want is to trigger the delete files on your entire drive (or drives)
with *.kek extension.Yes ???

 

by: beyusluPosted on 2009-10-15 at 05:30:45ID: 25579754

yes

 

by: senadPosted on 2009-10-15 at 23:04:13ID: 25587304

 

by: senadPosted on 2009-10-15 at 23:05:46ID: 25587309

a simple:  DeleteFile('c:\*.kek'); ??

 

by: senadPosted on 2009-10-15 at 23:07:43ID: 25587315

Here's a Delphi procedure that can delete a file with the ability to undo by sending the file to the "Recycle Bin."

Function FileDeleteRB will return True if the operation was successful.

~~~~~~~~~~~~~~~~~~~~~~~~~
uses ShellAPI;

function FileDeleteRB(
   AFileName:string): boolean;
var Struct: TSHFileOpStruct;
    pFromc: array[0..255] of char;
    Resultval: integer;
begin
   if not FileExists(AFileName) then begin
      Result := False;
      exit;
   end
   else begin
      fillchar(pfromc,sizeof(pfromc),0) ;
      StrPcopy(pfromc,expandfilename(AFileName)+#0#0) ;
      Struct.wnd := 0;
      Struct.wFunc := FO_DELETE;
      Struct.pFrom := pFromC;
      Struct.pTo := nil;
      Struct.fFlags:= FOF_ALLOWUNDO or FOF_NOCONFIRMATION
         or FOF_SILENT;
      Struct.fAnyOperationsAborted := false;
      Struct.hNameMappings := nil;
      Resultval := ShFileOperation(Struct) ;
      Result := (Resultval = 0) ;
   end;
end;

 

by: senadPosted on 2009-10-15 at 23:34:10ID: 25587381

The one for you :

var SearchRec:TSearchRec;
begin
  if (FindFirst('C:\*.kek', faAnyfile-faDirectory, SearchRec) = 0) then begin
    repeat
      DeleteFile('C:\'+SearchRec.Name);
    until (FindNext(SearchRec) <> 0);
    FindClose(SearchRec);
  end;

20120131-EE-VQP-002

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