I got a question about playing midi "resource".
    I could play wav "resource"  by PlaySound.
    But I wonder if there exists a function like that can play midi
"resource"?
    Would you please give me some hints?
    Thanks a lot! :-)

//don't forget to add mmsystem.lib to
// the import settings of your project

#include <mmsystem.h>
PlaySound("C:\\myfile.mid",NULL,SND_FILENAME | SND_ASYNC);

There are different ways to do it depending on the level of control that you
require.
1.    Insert an ActiveX control (Windows media player)
2.    Sub-class the MCIWnd class which encapsulates the MCI (Media Control
Interface) in a easy to implement window class.  You can play and record
MIDI, wave audiot and video avi's with this class.
3.    Use the MCI media layer in your own window ( easier to implement if
you don't want the User Interface offered in MCIWnd).
4.    Use Stream buffers ({*filter*}, low-level but with much more control and
performance).  This layer is used by commercial sequencers.
5.    Use MIDI Services (only one level of abstraction from the hardware
drivers - very lowlevel - lots of work - complete control).

I wrote a simple sequencer using stream buffers, but for most applications,
MCI is great.  Al the documentation is in the MSDN library...

HTH marcus