Get the number of files in recycle bin and the size of recycle bin

Problem/Question/Abstract:

How to get the number of files in recycle bin and the size of recycle bin

Answer:

To get the number files in the recycle bin, you have to use the function SHQueryRecycleBin. this function is available in the shell32 module. This function is supported in Win98 or above.

The function declarartion is as shown below

function SHQueryRecycleBin(pszrtootpath: pchar; QUERYRBINFO: pshqueryrbinfo): integer;
  stdcall;
  external 'shell32' name 'SHQueryRecycleBinA';

The SHQUERYBINFO Structure is as follows

type
  SHQUERYRBINFO = packed record
    cbSize: integer; // size of structure
    i64Size: int64; // size of recycle bin
    i64NumItems: int64; // number of items in recycle bin.
  end;

The cbsize must be set before calling the function

The first parameter must be the drive of which the recyclebin must be queried.
If the drive 'C' then the parameter must be'C:\'; if the parameter is empty then the function queries the recyclebin on all the harddisks as a whole.

the second parameter is a pointer to SHQUERYBINFO Structure.

The function returns 0 if successful.

The function can be called as follows

var
  rbinfo: SHQUERYRBINFO;
begin
  SHQueryRecycleBin('C:\', @rbinfo);
end;