Help with a midi player

Try with this code for midiplayer.cpp

#include "stdafx.h"
//#using <mscorlib.dll>

//using namespace std;

HWND hMainWnd = GetActiveWindow();

DWORD playMIDIFile(HWND hWndNotify, LPSTR lpszMIDIFileName)
{
UINT wDeviceID;
DWORD dwReturn;
MCI_OPEN_PARMS mciOpenParms;
MCI_PLAY_PARMS mciPlayParms;
MCI_STATUS_PARMS mciStatusParms;
MCI_SEQ_SET_PARMS mciSeqSetParms;

// Open the device by specifying the device and filename.
// MCI will attempt to choose the MIDI mapper as the output port.
mciOpenParms.lpstrDeviceType = "sequencer";
mciOpenParms.dwCallback=0;
mciOpenParms.lpstrElementName = lpszMIDIFileName;
if (dwReturn = mciSendCommand(NULL, MCI_OPEN,
MCI_OPEN_TYPE | MCI_OPEN_ELEMENT | MCI_WAIT,
(DWORD)(LPVOID) &mciOpenParms))
{
// Failed to open device. Don't close it; just return error.
return (dwReturn);
}

// The device opened successfully; get the device ID.
wDeviceID = mciOpenParms.wDeviceID;

// Check if the output port is the MIDI mapper.
mciStatusParms.dwItem = MCI_SEQ_STATUS_PORT;
if (dwReturn = mciSendCommand(wDeviceID, MCI_STATUS,
MCI_STATUS_ITEM, (DWORD)(LPVOID) &mciStatusParms))
{
mciSendCommand(wDeviceID, MCI_CLOSE, 0, NULL);
return (dwReturn);
}

// The output port is not the MIDI mapper.
// Ask if the user wants to continue.
if (LOWORD(mciStatusParms.dwReturn) != WORD(MIDI_MAPPER)) // MIDI_MAPPER==-1, so you must convert it to WORD
{
if (MessageBox(hMainWnd,
"The MIDI mapper is not available. Continue?",
"", MB_YESNO) == IDNO)
{
// User does not want to continue. Not an error;
// just close the device and return.
mciSendCommand(wDeviceID, MCI_CLOSE, 0, NULL);
return (0L);
}
}

// Begin playback. The window procedure function for the parent
// window will be notified with an MM_MCINOTIFY message when
// playback is complete. At this time, the window procedure closes
// the device.
mciPlayParms.dwCallback = (DWORD) hWndNotify;
if (dwReturn = mciSendCommand(wDeviceID, MCI_PLAY, MCI_WAIT,
(DWORD)(LPVOID) &mciPlayParms)) // request to wait
{
mciSendCommand(wDeviceID, MCI_CLOSE, 0, NULL);
return (dwReturn);
}

return (0L);
}

int main()
{
playMIDIFile(0,"C:\\hangar.mid");
return 0;
}

I solved the problem, in the playback part, where there is the mci command "MCI_WAIT", I put a 0 in its place so that now, it immediately returns the command to the user instead of waiting the midi file end.

Thanks,

Victor Freire