多媒体编程

开发平台：

Visual C++

CPI_Player_FileAssoc.c：源码内容

							#include "stdafx.h"
#include "globals.h"
#include "CPI_Player_CoDec.h"
typedef struct _CPs_FileAssociation
{
    char* m_pcExtension;
    DWORD m_dwCookie;
    void* m_pNext;
} CPs_FileAssociation;
//
void CPFA_InitialiseFileAssociations(CPs_CoDecModule* pCoDec)
{
    pCoDec->m_pFileAssociationCookie = NULL;
}
void CPFA_EmptyFileAssociations(CPs_CoDecModule* pCoDec)
{
    CPs_FileAssociation* pCursor = (CPs_FileAssociation*)pCoDec->m_pFileAssociationCookie;
    CPs_FileAssociation* pNext;
    while(pCursor)
    {
        CP_CHECKOBJECT(pCursor);
        pNext = (CPs_FileAssociation*)pCursor->m_pNext;
        free(pCursor->m_pcExtension);
        free(pCursor);
        pCursor = pNext;
    }
}
void CPFA_AddFileAssociation(CPs_CoDecModule* pCoDec, const char* pcExtension, DWORD dwCookie)
{
    CPs_FileAssociation* pNewAssociation = (CPs_FileAssociation*)malloc(sizeof(CPs_FileAssociation));
    CPs_FileAssociation* pCursor = (CPs_FileAssociation*)pCoDec->m_pFileAssociationCookie;
    while(pCursor)
    {
        if(stricmp(pcExtension, pCursor->m_pcExtension) == 0)
        {
            CP_TRACE1("** Extension "%s" already registered here", pcExtension);
            return;
        }
        pCursor = (CPs_FileAssociation*)pCursor->m_pNext;
    }
    STR_AllocSetString(&pNewAssociation->m_pcExtension, pcExtension, FALSE);
    pNewAssociation->m_dwCookie = dwCookie;
    pNewAssociation->m_pNext = pCoDec->m_pFileAssociationCookie;
    pCoDec->m_pFileAssociationCookie = pNewAssociation;
}
//
BOOL CPFA_IsAssociated(CPs_CoDecModule* pCoDec, const char* pcExtension, DWORD* pdwCookie)
{
    CPs_FileAssociation* pCursor = (CPs_FileAssociation*)pCoDec->m_pFileAssociationCookie;
    while(pCursor)
    {
        CP_CHECKOBJECT(pCursor);
        if(stricmp(pcExtension, pCursor->m_pcExtension) == 0)
        {
            *pdwCookie = pCursor->m_dwCookie;
            return TRUE;
        }
        pCursor = (CPs_FileAssociation*)pCursor->m_pNext;
    }
    return FALSE;
}
void CPFA_AssociateWithEXE(CPs_CoDecModule* pCoDec)
{
    CPs_FileAssociation* pCursor = (CPs_FileAssociation*)pCoDec->m_pFileAssociationCookie;
    HKEY hKey;
    DWORD dwDisposition;
    while(pCursor)
    {
        char* pDotExt;
        CP_CHECKOBJECT(pCursor);
        pDotExt = (char*)malloc(strlen(pCursor->m_pcExtension) + 2);
        pDotExt[0] = '.';
        strcpy(pDotExt + 1, pCursor->m_pcExtension);
        CP_TRACE1("Associating extension: "%s"", pCursor->m_pcExtension);
        RegCreateKeyEx(HKEY_CLASSES_ROOT, pDotExt, 0, NULL,
                       REG_OPTION_NON_VOLATILE,
                       KEY_ALL_ACCESS, NULL, &hKey,
                       &dwDisposition);
        RegSetValueEx(hKey, NULL, 0, REG_SZ, CIC_COOLPLAYER_FILETYPE, sizeof(CIC_COOLPLAYER_FILETYPE));
        RegCloseKey(hKey);
        free(pDotExt);
        pCursor = (CPs_FileAssociation*)pCursor->m_pNext;
    }
}
//

						