DINPUT释放的错误,高手看看问题在哪里?

xiang

相关代码如下
#define KEYDOWN(key)(buffer[key] & 0x80)
#define SAFE_RELEASE(p) {if(p){(p)->Release();(p)=NULL;}}

BOOL CloseAll()
{
        pDev->Unacquire();
        SAFE_RELEASE(pDev);
        SAFE_RELEASE(pInput);
        DestroyWindow( hWnd );
        PostQuitMessage( 0 );
}

void InitInput()
{
        DirectInput8Create(GetModuleHandle(NULL),DIRECTINPUT_VERSION,IID_IDirectInput8,(void**)&pInput,NULL);
        pInput->CreateDevice(GUID_SysKeyboard,&pDev,NULL);
        pDev->SetDataFormat(&c_dfDIKeyboard);
        pDev->SetCooperativeLevel(hWnd,DISCL_EXCLUSIVE|DISCL_FOREGROUND);
        pDev->Acquire();
}

int PASCAL WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
    InitWindow(hInstance, nCmdShow);
    InitInput();
    for(;;)
    {
        pDev->GetDeviceState(sizeof(buffer),(LPVOID)&buffer);
        if(KEYDOWN(DIK_ESCAPE))
        {
            CloseAll();
        }
    }
    return 0;
}
程序可以编译通过并执行,但按ESC键退出后出现错误消息框,内容如下
Unhandle exception in CT(这是程序名).exe:0xC0000005: Acess Violation.

playerwing

int PASCAL WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
    InitWindow(hInstance, nCmdShow);
    InitInput();
    for(;;)
    {
        pDev->GetDeviceState(sizeof(buffer),(LPVOID)&buffer);
        if(KEYDOWN(DIK_ESCAPE))
        {
            CloseAll();
            return 0;   // Try add this line.
        }
    }
    return 0;
}

xiang

原来是这样!太感谢楼上了!!!