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#include <windows.h>
#include "wmp3.h"

WMp3* myMp3 = new WMp3();



BOOL APIENTRY DllMain( HANDLE hModule, 
                       DWORD  ul_reason_for_call, 
                       LPVOID lpReserved
					 )
{
    return TRUE;
}

#define MYCOMMAND __declspec ( dllexport )

MYCOMMAND void loadmp3file(const char* file,int buff)
{
myMp3->OpenMp3File(file,buff);
}

MYCOMMAND void playmp3()
{
	myMp3->Play();

}

#include "wmp3.h"
#include <map>

using std::map;
//WMp3* myMp3 = new WMp3();
map<int,WMp3()> soundmap;//probably this thats wrong




BOOL APIENTRY DllMain( HANDLE hModule, 
                       DWORD  ul_reason_for_call, 
                       LPVOID lpReserved
					 )
{
    return TRUE;
}

#define MYCOMMAND __declspec ( dllexport )

MYCOMMAND void loadmp3file(const char* file,int id,int buff)
{
soundmap[id]->OpenMp3File(file,buff);
}

MYCOMMAND void playmp3(int id)
{
	soundmap[id]->Play();

}

1>main.cpp
1>.\main.cpp(24) : error C2227: left of '->OpenMp3File' must point to class/struct/union/generic type
1>        type is 'WMp3 (__cdecl &)(void)'
1>.\main.cpp(29) : error C2227: left of '->Play' must point to class/struct/union/generic type
1>        type is 'WMp3 (__cdecl &)(void)'

#include <map>

class Alarm
{
    //Class contents here
};

typedef std::map<DWORD, Alarm*>             Storage;

Storage AlarmMap;

EXPORTC void MakeAlarm(DWORD AlarmID)
{
    // Some checking needed here to ensure that the ID is not inuse
    AlarmMap[ AlarmID ] = new Alarm(/*Constructor args*/);
}