133 lines
4.2 KiB
C++
133 lines
4.2 KiB
C++
|
|
||
|
|
// WiaDataCallback.cpp: implementation of the CWiaEventCallback class.
|
||
|
|
//
|
||
|
|
//////////////////////////////////////////////////////////////////////
|
||
|
|
|
||
|
|
#include "stdafx.h"
|
||
|
|
#include "wiatest.h"
|
||
|
|
#include "WiaEventCallback.h"
|
||
|
|
|
||
|
|
#ifdef _DEBUG
|
||
|
|
#undef THIS_FILE
|
||
|
|
static char THIS_FILE[]=__FILE__;
|
||
|
|
#define new DEBUG_NEW
|
||
|
|
#endif
|
||
|
|
|
||
|
|
//////////////////////////////////////////////////////////////////////
|
||
|
|
// Construction/Destruction
|
||
|
|
//////////////////////////////////////////////////////////////////////
|
||
|
|
|
||
|
|
CWiaEventCallback::CWiaEventCallback()
|
||
|
|
{
|
||
|
|
m_cRef = 0;
|
||
|
|
for(LONG lEventIndex = 0; lEventIndex < MAX_REGISTERED_EVENTS; lEventIndex++){
|
||
|
|
if(m_pIUnkRelease[lEventIndex]){
|
||
|
|
m_pIUnkRelease[lEventIndex] = NULL;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
memset(m_szWindowText,0,sizeof(m_szWindowText));
|
||
|
|
}
|
||
|
|
|
||
|
|
CWiaEventCallback::~CWiaEventCallback()
|
||
|
|
{
|
||
|
|
for(LONG lEventIndex = 0; lEventIndex < MAX_REGISTERED_EVENTS; lEventIndex++){
|
||
|
|
if(m_pIUnkRelease[lEventIndex]){
|
||
|
|
m_pIUnkRelease[lEventIndex]->Release();
|
||
|
|
m_pIUnkRelease[lEventIndex] = NULL;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
HRESULT _stdcall CWiaEventCallback::QueryInterface(const IID& iid, void** ppv)
|
||
|
|
{
|
||
|
|
*ppv = NULL;
|
||
|
|
if (iid == IID_IUnknown || iid == IID_IWiaEventCallback)
|
||
|
|
*ppv = (IWiaEventCallback*) this;
|
||
|
|
else
|
||
|
|
return E_NOINTERFACE;
|
||
|
|
AddRef();
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
ULONG _stdcall CWiaEventCallback::AddRef()
|
||
|
|
{
|
||
|
|
InterlockedIncrement((long*) &m_cRef);
|
||
|
|
return m_cRef;
|
||
|
|
}
|
||
|
|
|
||
|
|
ULONG _stdcall CWiaEventCallback::Release()
|
||
|
|
{
|
||
|
|
ULONG ulRefCount = m_cRef - 1;
|
||
|
|
if (InterlockedDecrement((long*) &m_cRef) == 0)
|
||
|
|
{
|
||
|
|
delete this;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
return ulRefCount;
|
||
|
|
}
|
||
|
|
|
||
|
|
HRESULT _stdcall CWiaEventCallback::ImageEventCallback(
|
||
|
|
const GUID *pEventGUID,
|
||
|
|
BSTR bstrEventDescription,
|
||
|
|
BSTR bstrDeviceID,
|
||
|
|
BSTR bstrDeviceDescription,
|
||
|
|
DWORD dwDeviceType,
|
||
|
|
BSTR bstrFullItemName,
|
||
|
|
ULONG *plEventType,
|
||
|
|
ULONG ulReserved)
|
||
|
|
{
|
||
|
|
|
||
|
|
TCHAR szStatusText[255];
|
||
|
|
memset(szStatusText,0,sizeof(szStatusText));
|
||
|
|
|
||
|
|
TSPRINTF(szStatusText,TEXT("Description: %ws\nDeviceID: %ws\nDevice Description: %ws\nDevice Type: %d\nFull Item Name: %ws"),
|
||
|
|
bstrEventDescription,
|
||
|
|
bstrDeviceID,
|
||
|
|
bstrDeviceDescription,
|
||
|
|
dwDeviceType,
|
||
|
|
bstrFullItemName);
|
||
|
|
|
||
|
|
if(lstrlen(m_szWindowText) == 0){
|
||
|
|
SetViewWindowHandle(m_hViewWindow);
|
||
|
|
}
|
||
|
|
|
||
|
|
::MessageBox(m_hViewWindow,szStatusText, m_szWindowText, MB_ICONINFORMATION);
|
||
|
|
|
||
|
|
if (NULL != m_hViewWindow) {
|
||
|
|
BSTR bstrTargetDevice = SysAllocString(bstrDeviceID);
|
||
|
|
// handle known events
|
||
|
|
if (*pEventGUID == WIA_EVENT_DEVICE_DISCONNECTED) {
|
||
|
|
::PostMessage(m_hViewWindow,WM_DEVICE_DISCONNECTED,0,(LPARAM)bstrTargetDevice);
|
||
|
|
} else if (*pEventGUID == WIA_EVENT_DEVICE_CONNECTED) {
|
||
|
|
::PostMessage(m_hViewWindow,WM_DEVICE_CONNECTED,0,0);
|
||
|
|
} else if (*pEventGUID == WIA_EVENT_ITEM_DELETED) {
|
||
|
|
::PostMessage(m_hViewWindow,WM_ITEM_DELETED,0,0);
|
||
|
|
} else if (*pEventGUID == WIA_EVENT_ITEM_CREATED) {
|
||
|
|
::PostMessage(m_hViewWindow,WM_ITEM_CREATED,0,0);
|
||
|
|
} else if (*pEventGUID == WIA_EVENT_TREE_UPDATED) {
|
||
|
|
::PostMessage(m_hViewWindow,WM_TREE_UPDATED,0,0);
|
||
|
|
} else if (*pEventGUID == WIA_EVENT_STORAGE_CREATED) {
|
||
|
|
::PostMessage(m_hViewWindow,WM_STORAGE_CREATED,0,0);
|
||
|
|
} else if (*pEventGUID == WIA_EVENT_STORAGE_DELETED) {
|
||
|
|
::PostMessage(m_hViewWindow,WM_STORAGE_DELETED,0,0);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
void CWiaEventCallback::SetViewWindowHandle(HWND hWnd)
|
||
|
|
{
|
||
|
|
m_hViewWindow = hWnd;
|
||
|
|
TCHAR szWindowText[MAX_PATH];
|
||
|
|
memset(szWindowText,0,sizeof(szWindowText));
|
||
|
|
GetWindowText(hWnd,szWindowText,(sizeof(szWindowText)/sizeof(TCHAR)));
|
||
|
|
TSPRINTF(m_szWindowText,TEXT("Event Notification [%s]"),szWindowText);
|
||
|
|
}
|
||
|
|
|
||
|
|
void CWiaEventCallback::SetNumberOfEventsRegistered(LONG lEventsRegistered)
|
||
|
|
{
|
||
|
|
m_lNumEventsRegistered = lEventsRegistered;
|
||
|
|
}
|