菜鸟的问题，求代码：点一个按扭，使c;\file1的文件，拷贝到d;\file2

Question

copyfile('d:\un.txt','c:\un.txt' false);

Answer 1

---- 1、拷贝目录 ---- 为了能拷贝目录下带有子目录的情况，先定义一个辅助的拷贝函数，它是递归执行的，直到把目录下的所有文件和子目录都拷贝完。 ---- 1.1拷贝目录的递归辅助函数：DoCopyDir function DoCopyDir(sDirName:String;
sToDirName:String):Boolean;
var
   hFindFile:Cardinal;
   t,tfile:String;
   sCurDir:String[255];
   FindFileData:WIN32_FIND_DATA;
begin
   //先保存当前目录
   sCurDir:=GetCurrentDir;
   ChDir(sDirName);
   hFindFile:=FindFirstFile('*.*',FindFileData);
   if hFindFile< >INVALID_HANDLE_VALUE then
   begin
        if not DirectoryExists(sToDirName) then
           ForceDirectories(sToDirName);
        repeat
              tfile:=FindFileData.cFileName;
              if (tfile='.') or (tfile='..') then
                 Continue;
              if FindFileData.dwFileAttributes=
              FILE_ATTRIBUTE_DIRECTORY then
              begin
                   t:=sToDirName+'\'+tfile;
                   if  not DirectoryExists(t) then
                       ForceDirectories(t);
                   if sDirName[Length(sDirName)]< >'\' then
                      DoCopyDir(sDirName+'\'+tfile,t)
                   else
                      DoCopyDir(sDirName+tfile,sToDirName+tfile);
              end
              else
              begin
                   t:=sToDirName+'\'+tFile;
                   CopyFile(PChar(tfile),PChar(t),True);
              end;
        until FindNextFile(hFindFile,FindFileData)=false;
        FindClose(hFindFile);
   end
   else
   begin
        ChDir(sCurDir);
        result:=false;
        exit;
   end;
   //回到原来的目录下
   ChDir(sCurDir);
   result:=true;
end;---- 1.2拷贝目录的函数：CopyDir function CopyDir(sDirName:String;
sToDirName:string):Boolean;
begin
      if Length(sDirName)< =0 then
         exit;
      //拷贝...
      Result:=DoCopyDir(sDirName,sToDirName);
end;---- 2、删除目录 ---- 删除目录与拷贝目录很类似，但为了能删除位于根目录下的一个空目录，需要在辅助函数中设置一个标志变量，即：如果删除的是空目录,则置bEmptyDir为True，这一句已经用深色框表示了。 ---- 2.1删除目录的递归辅助函数：DoRemoveDir function DoRemoveDir(sDirName:String):Boolean;
var
   hFindFile:Cardinal;
   tfile:String;
   sCurDir:String;
   bEmptyDir:Boolean;
   FindFileData:WIN32_FIND_DATA;
begin
   //如果删除的是空目录,则置bEmptyDir为True
   //初始时,bEmptyDir为True
   bEmptyDir:=True;
   //先保存当前目录
   sCurDir:=GetCurrentDir;
   SetLength(sCurDir,Length(sCurDir));
   ChDir(sDirName);
   hFindFile:=FindFirstFile('*.*',FindFileData);
   if hFindFile< >INVALID_HANDLE_VALUE then
   begin
        repeat
              tfile:=FindFileData.cFileName;
              if (tfile='.') or (tfile='..') then
              begin
                 bEmptyDir:=bEmptyDir and True;
                 Continue;
              end;
              //不是空目录,置bEmptyDir为False
              bEmptyDir:=False;
              if FindFileData.dwFileAttributes=
              FILE_ATTRIBUTE_DIRECTORY then
              begin
                   if sDirName[Length(sDirName)]< >'\' then
                      DoRemoveDir(sDirName+'\'+tfile)
                   else
                      DoRemoveDir(sDirName+tfile);
                   if not RemoveDirectory(PChar(tfile)) then
                      result:=false
                   else
                      result:=true;
              end
              else
              begin
                   if not DeleteFile(PChar(tfile)) then
                      result:=false
                   else
                      result:=true;
              end;
        until FindNextFile(hFindFile,FindFileData)=false;
        FindClose(hFindFile);
   end
   else
   begin
        ChDir(sCurDir);
        result:=false;
        exit;
   end;
   //如果是空目录,则删除该空目录
   if bEmptyDir then
   begin
        //返回上一级目录
        ChDir('..');
        //删除空目录
        RemoveDirectory(PChar(sDirName));
   end;   //回到原来的目录下
   ChDir(sCurDir);
   result:=true;
end;---- 2.2删除目录的函数：DeleteDir function DeleteDir(sDirName:String):Boolean;
begin
      if Length(sDirName)< =0 then
         exit;
      //删除...
      Result:=DoRemoveDir(sDirName) and RemoveDir(sDirName);
end;---- 3、移动目录 ---- 有了拷贝目录和删除目录的函数，移动目录就变得很简单，只需顺序调用前两个函数即可： function MoveDir(sDirName:String;
sToDirName:string):Boolean;
begin
     if CopyDir(sDirName,sToDirName) then
        if RemoveDir(sDirName) then
           result:=True
        else
           result:=false;
end;///////////////////////////////////////////////
procedure TForm1.Button2Click(Sender: TObject);
var
  OpStruc: TSHFileOpStruct;
  frombuf, tobuf: Array [0..128] of Char;
Begin
  FillChar( frombuf, Sizeof(frombuf), 0 );
  FillChar( tobuf, Sizeof(tobuf), 0 );
  StrPCopy( frombuf, 'd:\brief\*.*' );
  StrPCopy( tobuf, 'd:\temp\brief' );
  With OpStruc DO Begin
    Wnd:= Handle;
    wFunc:= FO_COPY;
    pFrom:= @frombuf;
    pTo:=@tobuf;
    fFlags:= FOF_NOCONFIRMATION or FOF_RENAMEONCOLLISION;
    fAnyOperationsAborted:= False;
    hNameMappings:= Nil;
    lpszProgressTitle:= Nil;  end;
  ShFileOperation( OpStruc );
end;

Answer 2

procedure Copy_Dir(SourceDirName,DestDirName: String);
{*****复制文件夹及文件*****}
///uses IdGlobal;
///参数SourceDirName是源文件夹名，DestDirName是目标文件夹名。
var
    Current_Path: String;
    Sr: TSearchRec;
begin
  Current_Path:= SourceDirName+'\*.*';
  if not DirectoryExists(DestDirName) then
      CreateDir(DestDirName);
  if DirectoryExists(SourceDirName) then
  begin
     /////////Copy文件夹
     if FindFirst(Current_Path,faDirectory,Sr)=0 then
     begin
        if (Sr.Attr and faDirectory)=Sr.Attr then
           if (Sr.Name<>'.')and(Sr.Name<>'..') then
                 Copy_Dir(SourceDirName+'\'+Sr.Name,DestDirName+'\'+Sr.Name);
           While FindNext(sr)=0 do
             begin
                 if (Sr.Attr and faDirectory)=Sr.Attr then
                    if (Sr.Name<>'.')and(Sr.Name<>'..') then
                          Copy_Dir(SourceDirName+'\'+Sr.Name,DestDirName+'\'+Sr.Name);
             end;
        FindClose(Sr);
     end;
     /////////Copy文件
     if FindFirst(Current_Path, Sr.Attr, Sr)=0 then
     begin
        if (Sr.Attr and faAnyFile)=Sr.Attr then
           if (Sr.Name<>'.')and(Sr.Name<>'..') then
                 CopyFileTo(SourceDirName+'\'+Sr.Name,DestDirName+'\'+Sr.Name);
           While FindNext(Sr)=0 do
             begin
                 if (Sr.Attr and faAnyFile)=Sr.Attr then
                    if (Sr.Name<>'.')and(Sr.Name<>'..') then
                          CopyFileTo(SourceDirName+'\'+Sr.Name,DestDirName+'\'+Sr.Name);
             end;
           FindClose(Sr);
     end;
  end;
end;
procedure Delete_Dir(Dir_Name: String);
{*****删除文件夹及文件*****}
//参数Dir_Name为文件夹的路径
var
    Current_Path: String;
    Sr: TSearchRec;
begin
  Current_Path:= Dir_Name+'\*.*';
  if DirectoryExists(Dir_Name) then
  begin
     /////////删除文件夹
     if FindFirst(Current_Path,faDirectory,Sr)=0 then
     begin
        if (Sr.Attr and faDirectory)=Sr.Attr then
           if (Sr.Name<>'.')and(Sr.Name<>'..') then
                 Delete_Dir(Dir_Name+'\'+Sr.Name);
           While FindNext(sr)=0 do
             begin
                 if (Sr.Attr and faDirectory)=Sr.Attr then
                    if (Sr.Name<>'.')and(Sr.Name<>'..') then
                          Delete_Dir(Dir_Name+'\'+Sr.Name);
             end;
        FindClose(Sr);
     end;
     /////////删除文件
     if FindFirst(Current_Path, Sr.Attr, Sr)=0 then
     begin
        if (Sr.Attr and faAnyFile)=Sr.Attr then
           if (Sr.Name<>'.')and(Sr.Name<>'..') then
                 DeleteFile(Dir_Name+'\'+Sr.Name);
           While FindNext(Sr)=0 do
             begin
                 if (Sr.Attr and faAnyFile)=Sr.Attr then
                    if (Sr.Name<>'.')and(Sr.Name<>'..') then
                          DeleteFile(Dir_Name+'\'+Sr.Name);
             end;
           FindClose(Sr);
     end;
     RemoveDir(Dir_Name);
  end;
end;
  delphi6+Windows2000/98下编译通过。