Recording MIDI Inputs from a MIDI Device (using wimm library)?

So basically, I've been trying to record the MIDI inputs from a piano keyboard of mine, which is connected to my soundcard's game port.

However, I have been having trouble actually getting any MIDI input of any kind (or so I think). I'm not very well versed in MIDI (or actually most of anything that's programming), so bare with me.

Hopefully it's just something silly that I didn't understand. Anyways, this is the code I have so far. I've been using this to get feedback on what kind of values everything gives out, but I just can't get MIM_DATA to be the value for uMsg (which is what I need in order to know that my computer is indeed reading my piano inputs).

Code:

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//Link winmm library

#include <windows.h>
#include <stdio.h>
#include <mmsystem.h>
#include <cstdlib>
#include <iostream>
#include <conio.h>      /* include for kbhit() and getch() functions */

using namespace std;

void CALLBACK midiCallback(HMIDIIN handle, UINT uMsg, DWORD dwInstance, DWORD dwParam1, DWORD dwParam2)
{
   
    switch ( uMsg )
        {
        case MIM_OPEN:
        cout << "-----OPENED.-----" << endl;
                break;
        case MIM_CLOSE:
        cout << "-----EVERYTHING IS CLOSING.-----" << endl;
                break;
        case MIM_DATA:
        cout << "-----APPARENTLY THERE IS DATA.-----" << endl;        //I'm hoping to see this line...
                break;
        case MIM_LONGDATA:
        cout << "-----LONGDATA'D.-----" << endl;
                break;
        case MIM_ERROR:
        cout << "-----ERROR.-----" << endl;
                break;
        case MIM_LONGERROR:
        cout << "-----LONGERROR.  EVEN WORSE.-----" << endl;
                break;
        }
    cout << "dwInstance is " << dwInstance << endl; 
    cout << "Handle is " << handle << endl;
    cout << "dwParam1 is " << dwParam1 << endl; //dwParam1 is the bytes of the MIDI Message packed into an unsigned long
    cout << "dwParam2 is " << dwParam2 << endl; //dwParam2 is the timestamp of key press
    cout << "uMsg is " << uMsg << endl;
    cout << "-----" << endl;
}


void MidiThing(){
    MIDIINCAPS    mic;     

    unsigned long result;
    HMIDIIN      inHandle;
   
    int ckey;            // storage for the current keyboard key being pressed
    unsigned long    iNumDevs, i;
    iNumDevs = midiInGetNumDevs();  /* Get the number of MIDI In devices in this computer */

          /* Go through all of those devices, displaying their names */
    for (i = 0; i < iNumDevs; i++)
    {
        /* Get info about the next device */
        if (!midiInGetDevCaps(i, &mic, sizeof(MIDIINCAPS)))
        {
            /* Display its Device ID and name */
            printf("Device ID #%u: %s\r\n", i, mic.szPname);
        }
    }

    cout << "These are the only available devices...?" << endl;
    cout << endl;
   
    // Open the default MIDI In device.
    result = midiInOpen(&inHandle, 0, (DWORD)midiCallback, 0, CALLBACK_FUNCTION);
   
    if (result)
    {
      printf("There was an error opening the default MIDI In device!\r\n");
    }
    else
    {
        midiInStart(inHandle);
        cout << endl;
        cout << "midiInStart has been called." << endl;
    }
   
    cout << endl;
    cout << "The unsigned long, result, value was " << result << endl;
   
    cout << MIM_OPEN << " is MIM_OPEN's value" << endl;
    cout << MIM_CLOSE << " is MIM_CLOSE's value" << endl;
    cout << MIM_DATA << " is MIM_DATA's value" << endl;
    cout << endl;
   
    printf("Press \"q\" to quit.\n");
      while (1) {
          if (kbhit()) {
            ckey = getch();
            if (ckey == 'q')
                {             
                cout << "Stopped." << endl;   
                cout << endl;
                break;
                }
            }
      }
     
   

    midiInStop(inHandle);
    midiInReset(inHandle);
    midiInClose(inHandle);

    cout << endl;
    cout << "Lines are done twice because midiCallback " << endl;
    cout << "is called when midiInClose is called...?" << endl;
    cout << endl;
    cout << inHandle << " was the MIDIIN handle." << endl;
    cout << "Stuff's closed now." << endl;   
    cout << endl;
    cout << endl;
    cout << endl;
}


int main(int argc, char *argv[])
{
    MidiThing();
    system("PAUSE");
    return EXIT_SUCCESS;
}

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For the midiInStart function, I will admit I'm not exactly sure what to do with it.
The for loop in the middle of program where you press q to quit has no purpose for being there... but I uhh, left it in anyway.

EDIT: Okay wow. I just got it to work (kinda lame considering I've been stuck for about 3 hours until finally deciding to post here, and then finding the answer 5 minutes after). It turns out that the line

Code:

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result = midiInOpen(&inHandle, 0, (DWORD)midiCallback, 0, CALLBACK_FUNCTION);

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has to be written like

Code:

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result = midiInOpen(&inHandle, 0, (DWORD)midiCallback, NULL, CALLBACK_FUNCTION);

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Though I've solved my main issue, Dev-C++ gives me a warning for using NULL here though. Also, I'd still like to know what exactly midiInStart does and how to set up a buffer with it.
http://msdn.microsoft.com/en-us/libr...30(VS.85).aspx

The page I linked tells me that I should send at least one buffer to the driver before recording, but I'm not exactly sure how.

I have been trying to write a program to take input from my midi keyboard and compare it to another midi file. How did this program for taking the keyboard data end up for you? I was able to compile it using Code Block with microsfot visual studio c++.