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📄 巨菜的问题：如何实现文件的拷贝，移动，删除；目录（子目录）的创建、删除？.htm

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      <DIV id=mainpanel width="680"></DIV><xml id=mainxml><?xml version="1.0" encoding="gb2312" ?><DFWML type="问题显示" title="巨菜的问题：如何实现文件的拷贝，移动，删除；目录（子目录）的创建、删除？">
<Q ID="927897" status="2"><subject><![CDATA[巨菜的问题：如何实现文件的拷贝，移动，删除；目录（子目录）的创建、删除？]]></subject><from>johnrain</from>
<content><![CDATA[我刚刚接触delphi，想实现上述操作。请别笑话我。]]></content><points>20</points><read_n>61</read_n><reply_n>4</reply_n><regdatetime>2002-2-19 17:55:00</regdatetime><datetime>2002-4-3 11:02:00</datetime><room>软件工程</room><master>房客</master><master2>taozhiyu</master2><expert>eulb-10,xiaotian2002-10,</expert></Q>
<REPLY><Q ID="927953"><from>eulb</from><datetime>2002-2-19 18:20:00</datetime>
<content><![CDATA[MkDir(str);
ChDir(str);
GetDir(DriveID,str);
SetCurrentDir(str);
IOResult  --上面几个过程调用成功即返回0值

{This way uses a File stream.}
Procedure FileCopy( Const sourcefilename, targetfilename: String );
Var
  S, T: TFileStream;
Begin
  S := TFileStream.Create( sourcefilename, fmOpenRead );

  try
    T := TFileStream.Create( targetfilename,
                             fmOpenWrite or fmCreate );
    try
      T.CopyFrom(S, S.Size ) ;
    finally
      T.Free;
    end;
  finally
    S.Free;
  end;
End;

{This way uses memory blocks for read/write.}
procedure FileCopy(const FromFile, ToFile: string);
 var
  FromF, ToF: file;
  NumRead, NumWritten: Word;
  Buf: array[1..2048] of Char;
begin
  AssignFile(FromF, FromFile);
  Reset(FromF, 1);  { Record size = 1 }

  AssignFile(ToF, ToFile); { Open output file }
  Rewrite(ToF, 1);  { Record size = 1 }
  repeat
    BlockRead(FromF, Buf, SizeOf(Buf), NumRead);
    BlockWrite(ToF, Buf, NumRead, NumWritten);
  until (NumRead = 0) or (NumWritten &lt;&gt; NumRead);
  CloseFile(FromF);
  CloseFile(ToF);
end;

{This one uses LZCopy, which USES LZExpand.}
procedure CopyFile(FromFileName, ToFileName: string);
var
  FromFile, ToFile: File;
begin
  AssignFile(FromFile, FromFileName); { Assign FromFile to FromFileName }

  AssignFile(ToFile, ToFileName);     { Assign ToFile to ToFileName }
  Reset(FromFile);                    { Open file for input }
  try
    Rewrite(ToFile);                  { Create file for output }
    try
      { copy the file an if a negative value is returned }
      { raise an exception }
      if LZCopy(TFileRec(FromFile).Handle, TFileRec(ToFile).Handle) &lt; 0
        then
        raise EInOutError.Create('Error using LZCopy')
    finally
      CloseFile(ToFile);  { Close ToFile }

    end;
  finally
    CloseFile(FromFile);  { Close FromFile }
  end;
end;
]]></content></Q>
<Q ID="934877"><from>kingdeezj</from><datetime>2002-2-22 13:28:00</datetime>
<content><![CDATA[你上述的几个操作，都可以利用WINDOW API 函数来解决。你可以在DELPHI HELP 中的
WINDOWS SDK 中找到相应的函数，用法都挺简单的。

]]></content></Q>
<Q ID="935077"><from>xiaotian2002</from><datetime>2002-2-22 14:36:00</datetime>
<content><![CDATA[删除目录：

function DelDirectory(const Source:string): boolean;
var
  fo: TSHFILEOPSTRUCT;
begin
  FillChar(fo, SizeOf(fo), 0);
  with fo do
  begin
    Wnd := 0;
    wFunc := FO_DELETE;
    pFrom := PChar(source+#0);
    pTo := #0#0;
    fFlags := FOF_NOCONFIRMATION+FOF_SILENT;
  end;
  Result := (SHFileOperation(fo) = 0);
end;
复制目录：
function CopyDirectory(const Source, Dest: string): boolean;
var
  fo: TSHFILEOPSTRUCT;
begin
  FillChar(fo, SizeOf(fo), 0);
  with fo do
  begin
    Wnd := 0;
    wFunc := FO_COPY;
    pFrom := PChar(source+#0);
    pTo := PChar(Dest+#0);
    fFlags := FOF_NOCONFIRMATION+FOF_NOCONFIRMMKDIR    ;
  end;
  Result := (SHFileOperation(fo) = 0);
end;

重新命名：
用MoveFile()或者下面的函数也可以。
RenameFile('c:\a','c:\b')好想也可以？Win2K。
//RenDirectory('d:\wt2','d:\bcde');
function RenDirectory(const OldName,NewName:string): boolean;
var
  fo: TSHFILEOPSTRUCT;
begin
  FillChar(fo, SizeOf(fo), 0);
  with fo do
  begin
    Wnd := 0;
    wFunc := FO_RENAME;
    pFrom := PChar(OldName+#0);
    pTo := pchar(NewName+#0);
    fFlags := FOF_NOCONFIRMATION+FOF_SILENT;
  end;
  Result := (SHFileOperation(fo) = 0);
end;
//Copy 多个文件的处理：
function CopyFiles(const Source,Dest: string): boolean;
var
  fo: TSHFILEOPSTRUCT;
begin
  FillChar(fo, SizeOf(fo), 0);
  with fo do
  begin
    Wnd := 0;
    wFunc := FO_COPY;
    pFrom := @source[1];
    pTo :=pchar(dest);
    fFlags := FOF_NOCONFIRMATION+FOF_NOCONFIRMMKDIR    ;
  end;
  Result := (SHFileOperation(fo) = 0);
end;

procedure TForm1.Button1Click(Sender: TObject);
var
  str:string;
  i:integer;
begin
  if opendialog1.Execute then
  begin
    for i:=0 to OpenDialog1.Files.Count-1 do
     str:=str+OpenDialog1.Files.strings[i]+#0;
    showmessage(str);
    str:=str+#0;
    CopyFiles(str,'d:\temp');
  end;
end;
]]></content></Q>
<Q ID="1020153"><from>johnrain</from><datetime>2002-4-3 11:02:00</datetime>
<content><![CDATA[多人接受答案了。]]></content></Q>
</REPLY>
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