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- modified windows installer to register new shell ext dll for drag/drop.

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- stopped release shell ext dll from crashing by initializing ref counting members.
- added logging to shell ext dll to debug crash.
This commit is contained in:
Nick Bolton 2013-08-31 17:05:17 +00:00
parent bf0204e7c2
commit 501e894d03
4 changed files with 294 additions and 207 deletions
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36
src/lib/synwinxt/CDataHandlerExtension.cpp
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@ -24,58 +24,82 @@ extern GUID g_CLSID;
extern void updateDraggingDir(char*);
extern void outputDebugStringF(const char *str, ...);
CDataHandlerExtension::CDataHandlerExtension()
CDataHandlerExtension::CDataHandlerExtension() :
m_refCount(1)
{
outputDebugStringF("synwinxt: > CDataHandlerExtension::ctor, g_refCount=%d", g_refCount);
InterlockedIncrement(&g_refCount);
outputDebugStringF("synwinxt: < CDataHandlerExtension::ctor, g_refCount=%d", g_refCount);
}
CDataHandlerExtension::~CDataHandlerExtension()
{
outputDebugStringF("synwinxt: > CDataHandlerExtension::dtor, g_refCount=%d", g_refCount);
InterlockedDecrement(&g_refCount);
outputDebugStringF("synwinxt: < CDataHandlerExtension::dtor, g_refCount=%d", g_refCount);
}
HRESULT STDMETHODCALLTYPE
CDataHandlerExtension::QueryInterface(REFIID riid, void **ppvObject)
{
outputDebugStringF("synwinxt: > CDataHandlerExtension::QueryInterface");
static const QITAB qit[] =
{
QITABENT(CDataHandlerExtension, IPersistFile),
QITABENT(CDataHandlerExtension, IDataObject),
{ 0 },
};
return QISearch(this, qit, riid, ppvObject);
HRESULT hr = QISearch(this, qit, riid, ppvObject);
if (FAILED(hr)) {
outputDebugStringF("synwinxt: < CDataHandlerExtension::QueryInterface, hr=FAILED");
}
else {
outputDebugStringF("synwinxt: < CDataHandlerExtension::QueryInterface, hr=%d", hr);
}
return hr;
}
ULONG STDMETHODCALLTYPE
CDataHandlerExtension::AddRef()
{
return InterlockedIncrement(&m_refCount);
outputDebugStringF("synwinxt: > CDataHandlerExtension::AddRef, m_refCount=%d", m_refCount);
LONG r = InterlockedIncrement(&m_refCount);
outputDebugStringF("synwinxt: < CDataHandlerExtension::AddRef, r=%d, m_refCount=%d", r, m_refCount);
return r;
}
ULONG STDMETHODCALLTYPE
CDataHandlerExtension::Release()
{
LONG count = InterlockedDecrement(&m_refCount);
if (count == 0) {
outputDebugStringF("synwinxt: > CDataHandlerExtension::Release, m_refCount=%d", m_refCount);
LONG r = InterlockedDecrement(&m_refCount);
if (r == 0) {
delete this;
}
return count;
outputDebugStringF("synwinxt: < CDataHandlerExtension::Release, r=%d", r);
return r;
}
HRESULT STDMETHODCALLTYPE
CDataHandlerExtension::Load(__RPC__in LPCOLESTR pszFileName, DWORD dwMode)
{
outputDebugStringF("synwinxt: > CDataHandlerExtension::Load");
char selectedFileDir[MAX_PATH];
StringCchCopyW(m_selectedFileDir, ARRAYSIZE(m_selectedFileDir), pszFileName);
WideCharToMultiByte(CP_ACP, 0, m_selectedFileDir, -1, selectedFileDir, MAX_PATH, NULL, NULL);
updateDraggingDir(selectedFileDir);
outputDebugStringF("synwinxt: < CDataHandlerExtension::Load");
return S_OK;
}
HRESULT STDMETHODCALLTYPE
CDataHandlerExtension::GetClassID(__RPC__out CLSID *pClassID)
{
outputDebugStringF("synwinxt: > CDataHandlerExtension::GetClassID");
*pClassID = g_CLSID;
outputDebugStringF("synwinxt: < CDataHandlerExtension::GetClassID");
return S_OK;
}