请高手指点迷津.

[feng]

下面程序运行到标号4的时候报错

#include "windows.h"
#include "dsound.h"

typedef HRESULT (*CreateDSound)(LPCGUID ,LPDIRECTSOUND * ,LPUNKNOWN );
HMODULE haspi = NULL;
CreateDSound DSoundCreate = NULL;

HRESULT hr;
LPDIRECTSOUND m_ps_ds;

1. if( hr = CoInitialize(NULL) )
printf("error\n");

2. haspi = LoadLibrary("dsound.dll");
if(haspi == NULL)
printf("error\n");
3. DSoundCreate = (CreateDSound)GetProcAddress(haspi, "DirectSoundCreate");

//extern HRESULT WINAPI DirectSoundCreate(LPCGUID, LPDIRECTSOUND *, LPUNKNOWN);
4. hr = DSoundCreate( NULL, &m_ps_ds, NULL );
if( FAILED( hr ) )
printf("error\n");
错误信息如下
The value of ESP was not properly saved across a function call.
This is usually a result of calling a function declared with one
calling convention with a function pointer declared with a different
calling convention
请高手指点迷津.

[zhq2000]

用这个:
LPDIRECTSOUND lpDSound=NULL;
DirectSoundCreate(lpGuid,&lpDSound,NULL);

lpGuid是通过DirectSoundEnumerate得到！

[Kevin_qing]

是你的DirectSoundCreate的聲明有问题
，另外你为什么用程序加载dll不用自动链接？
extern HRESULT WINAPI DirectSoundCreate(LPGUID, LPDIRECTSOUND *, LPUNKNOWN);
不能少了WINAPI，因为一种是PASCAL方式的call，一种是C方式的。
乱用会造成堆栈错误，使程序运行道不正常的地方。
还有建议在：

3. DSoundCreate = (CreateDSound)GetProcAddress(haspi, "DirectSoundCreate");


这里检查一下DSoundCreate是否为NULL;

[feng]

问题已自己解决。Kevin_qing说的有一些道理。