Title: Search an entire drive for a file QUICKLY
Question: For a quick way to find a file try using the SearchTreeForFile function located in the library imagehlp.dll. I've loaded this dll
explicitly - feel free to load it implicitly if you want to.
Answer:
//This function offers you a QUICK way of finding a single
//file on any drive. lpStartingPoint is either a drive, or
//a path, the search will begin at the starting point. The
//file returned will be the first match found.
//This is a good way to quickly find a file without asking
//the user to specify the file's location. :-)
//FUNCTION RESULTS:
//The function will return the path and name of lpFileToFind.
//If the lpFileToFind can't be found the return result is ''.
//Any other problems will be returned in the form of a string
function SearchForFileEx(lpStartingPoint, lpFileToFind: string): string;
type
TSearchTree = function(lpRootPath: PChar; lpInputPathName: PChar; lpOutputPath: PChar): integer; stdcall;
var
imagehlp_hwnd: THandle;
SearchTreeNow: TSearchTree;
lpResult: array [0..MAX_PATH + 256] of char;
begin
imagehlp_hwnd := LoadLibrary('imagehlp.dll');
if imagehlp_hwnd = 0 then
Result := 'Failed to Load "imagehlp.dll"'
else
begin
@SearchTreeNow := GetProcAddress(imagehlp_hwnd, 'SearchTreeForFile');
if @SearchTreeNow = nil then
Result := 'Failed to find function "SearchTreeForFile"'
else
begin
SearchTreeNow(PChar(lpStartingPoint), PChar(lpFileToFind), lpResult);
Result := lpResult;
end;
end;
FreeLibrary(imagehlp_hwnd);
end;
//Use the function like:
procedure TForm1.Button1Click(Sender: TObject);
begin
showmessage(SearchForFileEx('C:\', 'winhlp32.hlp'));
end;
//Once you have found your file, you may like to check for version
//numbers or some other way of verifying you have the right file..