Копирование потока компонент в буфер обмена

{ 
  Clipboard has  methods  GetComponent and SetComponent but we need 
  to stream multiple components to the clipboard to include copy paste type 
  of feature. 
 
}
 
 
 procedure CopyStreamToClipboard(fmt: Cardinal; S: TStream);
 var
   hMem: THandle;
   pMem: Pointer;
 begin
   S.Position := 0;
   hMem       := GlobalAlloc(GHND or GMEM_DDESHARE, S.Size);
   if hMem <> 0 then
    begin
     pMem := GlobalLock(hMem);
     if pMem <> nil then
      begin
       S.Read(pMem^, S.Size);
       S.Position := 0;
       GlobalUnlock(hMem);
       Clipboard.Open;
       try
         Clipboard.SetAsHandle(fmt, hMem);
       finally
         Clipboard.Close;
       end;
     end { If }
     else
      begin
       GlobalFree(hMem);
       OutOfMemoryError;
     end;
   end { If }
   else
     OutOfMemoryError;
 end; { CopyStreamToClipboard }

 procedure CopyStreamFromClipboard(fmt: Cardinal; S: TStream);
 var
   hMem: THandle;
   pMem: Pointer;
 begin
   hMem := Clipboard.GetAsHandle(fmt);
   if hMem <> 0 then
    begin
     pMem := GlobalLock(hMem);
     if pMem <> nil then
      begin
       S.Write(pMem^, GlobalSize(hMem));
       S.Position := 0;
       GlobalUnlock(hMem);
     end { If }
     else
       raise Exception.Create('CopyStreamFromClipboard: could not lock global handle ' +
         'obtained from clipboard!');
   end; { If }
 end; { CopyStreamFromClipboard }

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