delphi - Why doesn't my code find any registry keys? -


i want list usb vids registry, , wrote following delphi code:

procedure findusbvids(vids: tstrings); var   reg1: tregistry; begin   reg1 := tregistry.create;   try     reg1.rootkey := hkey_local_machine;     reg1.openkey('system\currentcontrolset\enum\usb', false);     reg1.getkeynames(vids);       reg1.free;   end; end;  procedure tform1.button6click(sender: tobject);   findusbvids(memo2.lines); end;

unfortunately memo remains empty. triple-checked key, exists , has couple dozen subkeys. doing wrong?

(note: i'm not sure right way find usb vids, that's not point. it's i'm puzzled why code doesn't produce result.)

you asking write access registry key. use openkeyreadonly instead of openkey.


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