procedure TForm1.FormCreate(Sender: TObject);var hDSound: Cardinal; pDirectSoundCreate: Pointer; hWinmm: Cardinal; pmidiStreamOpen: Pointer; pwaveOutWrite: Pointer; lp: Cardinal;begin hDSound := LoadLibrary(‘DSound.dll‘); if hDSound > 0 then pDirectSoundCreate := GetProcAddress(hDSound, ‘DirectSoundCreate‘); if pDirectSoundCreate <> nil then begin VirtualProtect(pDirectSoundCreate, 3, PAGE_EXECUTE_READWRITE, lp); Move(#$C2#$0C#$00, pDirectSoundCreate^, 3); end; hWinmm := LoadLibrary(‘Winmm.dll‘); if hWinmm > 0 then pmidiStreamOpen := GetProcAddress(hWinmm, ‘midiStreamOpen‘); if pmidiStreamOpen <> nil then begin VirtualProtect(pmidiStreamOpen, 3, PAGE_EXECUTE_READWRITE, lp); Move(#$C2#$04#$00, pmidiStreamOpen^, 3); end; if hWinmm > 0 then pwaveOutWrite := GetProcAddress(hWinmm, ‘waveOutWrite‘); if pwaveOutWrite <> nil then begin VirtualProtect(pwaveOutWrite, 3, PAGE_EXECUTE_READWRITE, lp); Move(#$C2#$0C#$00, pwaveOutWrite^, 3); end;end;原文：http://www.cnblogs.com/honeynm/p/4438291.html