85 lines
1.8 KiB
C++
85 lines
1.8 KiB
C++
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/*
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* comcpp.cpp - Common C++ functions implementation.
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*/
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/* Headers
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**********/
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#include "project.hpp"
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#pragma hdrstop
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/****************************** Public Functions *****************************/
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PUBLIC_CODE HRESULT MyReleaseStgMedium(PSTGMEDIUM pstgmed)
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{
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HRESULT hr;
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ASSERT(IS_VALID_STRUCT_PTR(pstgmed, CSTGMEDIUM));
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if (pstgmed->pUnkForRelease)
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{
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hr = pstgmed->pUnkForRelease->Release();
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switch(pstgmed->tymed)
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{
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case TYMED_FILE:
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SHFree(pstgmed->lpszFileName);
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hr = S_OK;
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break;
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case TYMED_ISTREAM:
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hr = pstgmed->pstm->Release();
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break;
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case TYMED_ISTORAGE:
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hr = pstgmed->pstm->Release();
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break;
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}
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}
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else
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{
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switch(pstgmed->tymed)
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{
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case TYMED_HGLOBAL:
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hr = (! GlobalFree(pstgmed->hGlobal)) ? S_OK : E_HANDLE;
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break;
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case TYMED_ISTREAM:
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hr = pstgmed->pstm->Release();
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break;
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case TYMED_ISTORAGE:
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hr = pstgmed->pstm->Release();
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break;
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case TYMED_FILE:
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SHFree(pstgmed->lpszFileName);
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hr = S_OK;
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break;
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case TYMED_GDI:
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hr = (DeleteObject(pstgmed->hBitmap)) ? S_OK : E_HANDLE;
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break;
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case TYMED_MFPICT:
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hr = (DeleteMetaFile((HMETAFILE)(pstgmed->hMetaFilePict)) &&
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! GlobalFree(pstgmed->hMetaFilePict)) ? S_OK : E_HANDLE;
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break;
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case TYMED_ENHMF:
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hr = (DeleteEnhMetaFile(pstgmed->hEnhMetaFile)) ? S_OK : E_HANDLE;
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break;
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default:
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ASSERT(pstgmed->tymed == TYMED_NULL);
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hr = S_OK;
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break;
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}
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}
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return(hr);
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}
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