Creative AWE32 - Windows Programming Guide

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SB AWE32 Developer's Information Pack PART III Windows Driver API •• 75

AWE_ERR_INVALID_SAMPE Indicates application try to load an invalid sample

using AWE_VIENNA_LOAD_SAMPLE.

AWE_ERR_OUT_OF_DRAM Indicates that the AWE32 hardware doesn't have

enough RAM to hold the user sample.

AWE_ERR_OUT_OF_GCHANNEL Indicates that MIDI driver is run of channels to

be allocated to play user samples.

AWE_ERR_INVALID_PRESET Indicates that application try to load an invalid

preset using AWE_VIENNA_LOAD_PRESET.

Windows Programming Guide

This chapter provides you with examples on how to use the API provided by AWEMAN. The examples

provided, in fragments of code, are sufficient to let you start accessing and manipulating the Sound

Blaster AWE32. This guide will show, in step by step examples, how the AWE32 features can be

programmed using the DLL provided.

This guide assumes that you are proficient in 'C' and Windows programming basics. The code present in

the examples assume that the DLL is statically linked to your program.

This chapter consists of the following sections :

• Opening and closing the DLL

• Query for support

• Retrieving selections

• Issuing selections

Opening and closing

The first step in your application is to obtain the AWE device by calling the API provided in the

AWEMAN.DLL. This can be done during your program's initialization in WinMain.

#include "windows.h"

#include "AWE_DLL.H"

/* Global variables */

extern AWEHANDLE hDeviceID;

int PASCAL WinMain (

HANDLE hInst,

HANDLE hPrevInst,

LPSTR lpCmdLine,

int nCmdShow )

{

MSG msg;

LRESULT lResult;

HWND hWnd;

WORD num;

/* Perform your program's initialization and create main window */