本文整理汇总了C++中LPDATAOBJECT::EnumFormatEtc方法的典型用法代码示例。如果您正苦于以下问题：C++ LPDATAOBJECT::EnumFormatEtc方法的具体用法？C++ LPDATAOBJECT::EnumFormatEtc怎么用？C++ LPDATAOBJECT::EnumFormatEtc使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类LPDATAOBJECT的用法示例。
在下文中一共展示了LPDATAOBJECT::EnumFormatEtc方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: DragEnter
STDMETHODIMP UDropTarget::DragEnter(LPDATAOBJECT pDataObj, DWORD grfKeyState, POINTL pt, LPDWORD pdwEffect)
{
GuiLock __;
LLOG("DragEnter " << pt);
data = pDataObj;
data->AddRef();
fmt.Clear();
IEnumFORMATETC *fe;
if(!ctrl || pDataObj->EnumFormatEtc(DATADIR_GET, &fe) != NOERROR) {
*pdwEffect = DROPEFFECT_NONE;
return NOERROR;
}
FORMATETC fmtetc;
while(fe->Next(1, &fmtetc, 0) == S_OK) {
fmt.FindAdd(FromWin32CF(fmtetc.cfFormat));
if(fmtetc.ptd)
CoTaskMemFree(fmtetc.ptd);
}
fe->Release();
DnD(pt, false, pdwEffect, grfKeyState);
return NOERROR;
}示例2: AddOtherClipboardData
void COleServerItem::AddOtherClipboardData(COleDataSource* pDataSource)
{
ASSERT_VALID(this);
ASSERT_VALID(pDataSource);
// get IEnumFORMATETC interface for the IDataObject
LPDATAOBJECT lpDataObject = GetDataObject();
LPENUMFORMATETC lpEnumFORMATETC;
if (lpDataObject->EnumFormatEtc(DATADIR_GET, &lpEnumFORMATETC) != S_OK)
return;
ASSERT(lpEnumFORMATETC != NULL);
// get all formats that the object will give us
FORMATETC formatEtc;
while (lpEnumFORMATETC->Next(1, &formatEtc, NULL) == S_OK)
{
STGMEDIUM stgMedium;
if (lpDataObject->GetData(&formatEtc, &stgMedium) != S_OK)
{
// data is not available
CoTaskMemFree(formatEtc.ptd);
}
else if (stgMedium.pUnkForRelease != NULL)
{
// don't cache data with pUnkForRelease != NULL
::ReleaseStgMedium(&stgMedium);
CoTaskMemFree(formatEtc.ptd);
}
else
{
// cache the data (now we own the stgMedium)
pDataSource->CacheData(0, &stgMedium, &formatEtc);
}
}
// cleanup
lpEnumFORMATETC->Release();
}示例3: Initialize
STDMETHODIMP CDDShellExt::Initialize(LPCITEMIDLIST pidlFolder,LPDATAOBJECT pDO,HKEY hProgID)
{
(void)hProgID;
if(!connected)
{
bool b = m_ac.connectToServer();
if (b==true)
{
connected=true;
}
else
return E_FAIL;
}
FORMATETC fmt={CF_HDROP,NULL,DVASPECT_CONTENT,-1,TYMED_HGLOBAL};
STGMEDIUM stg={TYMED_HGLOBAL};
HDROP hDrop;
fDestDir[0]=0;
if (!SHGetPathFromIDList(pidlFolder,fDestDir))
{
#ifdef CATCHCOPY_EXPLORER_PLUGIN_DEBUG
MessageBox(NULL,L"Initialize",L"E_FAIL 1",MB_OK);
#endif // CATCHCOPY_EXPLORER_PLUGIN_DEBUG
return E_FAIL;
}
// Detect if it's explorer that started the operation by enumerating available
// clipboard formats and searching for one that only explorer uses
IEnumFORMATETC *en;
FORMATETC fmt2;
WCHAR fmtName[256]=L"\0";
fFromExplorer=false;
pDO->EnumFormatEtc(DATADIR_GET,&en);
while(en->Next(1,&fmt2,NULL)==S_OK){
GetClipboardFormatName(fmt2.cfFormat,fmtName,256);
if (!wcscmp(fmtName,CFSTR_SHELLIDLIST)) fFromExplorer=true;
}
en->Release();
// Look for CF_HDROP data in the data object. If there
// is no such data, return an error back to Explorer.
if (FAILED(pDO->GetData(&fmt,&stg)))
{
#ifdef CATCHCOPY_EXPLORER_PLUGIN_DEBUG
MessageBox(NULL,L"Initialize",L"E_INVALIDARG 2",MB_OK);
#endif // CATCHCOPY_EXPLORER_PLUGIN_DEBUG
return E_INVALIDARG;
}
// Get a pointer to the actual data.
hDrop=(HDROP)GlobalLock(stg.hGlobal);
// Make sure it worked.
if (hDrop==NULL)
{
#ifdef CATCHCOPY_EXPLORER_PLUGIN_DEBUG
MessageBox(NULL,L"Initialize",L"E_INVALIDARG 1",MB_OK);
#endif // CATCHCOPY_EXPLORER_PLUGIN_DEBUG
return E_INVALIDARG;
}
UINT numFiles,i;
WCHAR fn[MAX_PATH]=L"";
numFiles=DragQueryFile(hDrop,0xFFFFFFFF,NULL,0);
if (numFiles)
{
for(i=0;i<numFiles;++i)
{
if(DragQueryFile(hDrop,i,fn,MAX_PATH))
sources.push_back(fn);
}
}
GlobalUnlock(stg.hGlobal);
ReleaseStgMedium(&stg);
return S_OK;
}