www.pudn.com > RBGContrast.rar > icontrst.h

//------------------------------------------------------------------------------ 
// File: IContrst.h 
// 
// Desc: DirectShow sample code - custom interface allowing the user 
//       to adjust the contrast level. 
// 
// Copyright (c) Microsoft Corporation.  All rights reserved. 
//------------------------------------------------------------------------------ 
 
 
#ifndef __ICONTRAST__ 
#define __ICONTRAST__ 
 
#ifdef __cplusplus 
extern "C" { 
#endif 
 
    // {fd5010a2-8ebe-11ce-8183-00aa00577da1} 
    DEFINE_GUID(IID_IContrast, 
    0xfd5010a2, 0x8ebe, 0x11ce, 0x81, 0x83, 0x00, 0xaa, 0x00, 0x57, 0x7d, 0xa1); 
 
    DECLARE_INTERFACE_(IContrast, IUnknown) 
    { 
        STDMETHOD(get_ContrastLevel) (THIS_ 
            signed char *ContrastLevel      // The current contrast level 
        ) PURE; 
 
        STDMETHOD(put_ContrastLevel) (THIS_ 
            signed char ContrastLevel,      // Change to the contrast level 
            unsigned long ChangeTime        // Time from now to do the change 
        ) PURE; 
 
        STDMETHOD(put_DefaultContrastLevel) (THIS) PURE; 
    }; 
 
#ifdef __cplusplus 
} 
#endif 
 
#endif // __ICONTRAST__