Borland C++ Builder FAQ
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mciSendString("Set cdaudio!N: door open wait", NULL, 0, this->Handle);
mciSendString("Set cdaudio!N: door closed wait", NULL, 0, this->Handle);
Где N - литера CD-ROM.mciSendString("Set cdaudio door open wait", NULL, 0, this->Handle);
mciSendString("Set cdaudio door closed wait", NULL, 0, this->Handle);