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How to call BOOL Beep( dwFreq, dwDuration ) from managed C++ ?

Hi there,

I'm trying to call very simple API function from managed C++ code

BOOL Beep( DWORD dwFreq, DWORD dwDuration );

Something like this:

namespace DocImage {

public __gc class cBeep {
public:
static bool myBeep(unsigned long iFreq, unsigned long iDur)
{
Beep(iFreq, iDur); return true;
}
};//EOF Class

}

This is the error i'm getting:

c:\src\VC7\Mana ged\snmKiosk\Do cImage\Utils.h( 10):
error C3861: 'Beep': identifier not found, even with argument-dependent
lookupC:\Progra m Files\Microsoft Visual Studio .NET

2003\Vc7\Platfo rmSDK\Include\W inBase.h(3657): error C2365: 'Beep' :
redefinition; previous definition was a 'formerly unknown identifier'

What's wrong am i doing here?

--
Regards,
Sergey Muschin
Nov 16 '05 #1
1 5370
senimu wrote:
Hi there,

I'm trying to call very simple API function from managed C++ code

BOOL Beep( DWORD dwFreq, DWORD dwDuration );

c:\src\VC7\Mana ged\snmKiosk\Do cImage\Utils.h( 10):
error C3861: 'Beep': identifier not found, even with argument-dependent
lookup


Du solltest ganz oben in deinem CPP-File folgendes hinschreiben:

#include <windows.h>
--
Greetings
Jochen

Do you need a memory-leak finder ?
http://www.codeproject.com/useritems/leakfinder.asp
Nov 16 '05 #2

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