136 lines
3.2 KiB
C++
136 lines
3.2 KiB
C++
#include "stock.h"
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#pragma hdrstop
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#ifndef UNICODE
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#define UNICODE
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#endif
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#include <dobjutil.h>
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STDAPI DataObj_SetBlob(IDataObject *pdtobj, UINT cf, LPCVOID pvBlob, UINT cbBlob)
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{
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HRESULT hr = E_OUTOFMEMORY;
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void *pv = GlobalAlloc(GPTR, cbBlob);
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if (pv)
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{
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CopyMemory(pv, pvBlob, cbBlob);
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hr = DataObj_SetGlobal(pdtobj, cf, pv);
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if (FAILED(hr))
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GlobalFree((HGLOBAL)pv);
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}
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return hr;
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}
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STDAPI DataObj_GetBlob(IDataObject *pdtobj, UINT cf, void *pvBlob, UINT cbBlob)
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{
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STGMEDIUM medium = {0};
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FORMATETC fmte = {(CLIPFORMAT) cf, NULL, DVASPECT_CONTENT, -1, TYMED_HGLOBAL};
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HRESULT hr = pdtobj->GetData(&fmte, &medium);
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if (SUCCEEDED(hr))
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{
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void *pv = GlobalLock(medium.hGlobal);
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if (pv)
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{
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CopyMemory(pvBlob, pv, cbBlob);
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GlobalUnlock(medium.hGlobal);
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}
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else
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{
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hr = E_UNEXPECTED;
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}
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ReleaseStgMedium(&medium);
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}
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return hr;
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}
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STDAPI DataObj_SetDWORD(IDataObject *pdtobj, UINT cf, DWORD dw)
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{
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return DataObj_SetBlob(pdtobj, cf, &dw, sizeof(DWORD));
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}
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STDAPI_(DWORD) DataObj_GetDWORD(IDataObject *pdtobj, UINT cf, DWORD dwDefault)
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{
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DWORD dwRet;
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if (FAILED(DataObj_GetBlob(pdtobj, cf, &dwRet, sizeof(DWORD))))
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dwRet = dwDefault;
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return dwRet;
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}
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STDAPI DataObj_SetGlobal(IDataObject *pdtobj, UINT cf, HGLOBAL hGlobal)
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{
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FORMATETC fmte = {(CLIPFORMAT) cf, NULL, DVASPECT_CONTENT, -1, TYMED_HGLOBAL};
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STGMEDIUM medium = {0};
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medium.tymed = TYMED_HGLOBAL;
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medium.hGlobal = hGlobal;
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medium.pUnkForRelease = NULL;
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// give the data object ownership of ths
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return pdtobj->SetData(&fmte, &medium, TRUE);
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}
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STDAPI_(LPIDA) DataObj_GetHIDAEx(IDataObject *pdtobj, CLIPFORMAT cf, STGMEDIUM *pmedium)
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{
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FORMATETC fmte = {cf, NULL, DVASPECT_CONTENT, -1, TYMED_HGLOBAL};
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if (pmedium)
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{
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pmedium->pUnkForRelease = NULL;
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pmedium->hGlobal = NULL;
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}
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if (!pmedium)
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{
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if (S_OK == pdtobj->QueryGetData(&fmte))
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return (LPIDA)TRUE;
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else
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return (LPIDA)FALSE;
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}
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else if (SUCCEEDED(pdtobj->GetData(&fmte, pmedium)))
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{
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return (LPIDA)GlobalLock(pmedium->hGlobal);
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}
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return NULL;
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}
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STDAPI_(LPIDA) DataObj_GetHIDA(IDataObject *pdtobj, STGMEDIUM *pmedium)
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{
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static CLIPFORMAT cfHIDA = 0;
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if (!cfHIDA)
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{
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cfHIDA = (CLIPFORMAT)RegisterClipboardFormat(CFSTR_SHELLIDLIST);
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}
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return DataObj_GetHIDAEx(pdtobj, cfHIDA, pmedium);
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}
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STDAPI_(void) ReleaseStgMediumHGLOBAL(void *pv, STGMEDIUM *pmedium)
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{
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if (pmedium->hGlobal && (pmedium->tymed == TYMED_HGLOBAL))
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{
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#ifdef DEBUG
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if (pv)
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{
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void *pvT = (void *)GlobalLock(pmedium->hGlobal);
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ASSERT(pvT == pv);
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GlobalUnlock(pmedium->hGlobal);
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}
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#endif
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GlobalUnlock(pmedium->hGlobal);
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}
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else
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{
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ASSERT(0);
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}
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ReleaseStgMedium(pmedium);
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}
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STDAPI_(void) HIDA_ReleaseStgMedium(LPIDA pida, STGMEDIUM * pmedium)
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{
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ReleaseStgMediumHGLOBAL((void *)pida, pmedium);
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}
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