windows-nt/Source/XPSP1/NT/shell/ext/systray/dll/stobject.cpp
2020-09-26 16:20:57 +08:00

197 lines
4.6 KiB
C++

#include "stdafx.h"
#include "stobject.h"
#include "systray.h"
#include <initguid.h>
// 7007ACCF-3202-11D1-AAD2-00805FC1270E CLSID_ConnectionTray
DEFINE_GUID(CLSID_ConnectionTray, 0x7007ACCF,0x3202,0x11D1,0xAA,0xD2,0x00,0x80,0x5F,0xC1,0x27,0x0E);
IOleCommandTarget *g_pctNetShell = NULL;
extern "C"
{
void StartNetShell()
{
ASSERT(!g_pctNetShell);
HRESULT hr = CoCreateInstance(CLSID_ConnectionTray, NULL, CLSCTX_INPROC_SERVER | CLSCTX_INPROC_HANDLER,
IID_IOleCommandTarget, (void **)&g_pctNetShell);
if (SUCCEEDED(hr))
{
g_pctNetShell->Exec(&CGID_ShellServiceObject, SSOCMDID_OPEN, 0, NULL, NULL);
}
}
void StopNetShell()
{
if (g_pctNetShell)
{
g_pctNetShell->Exec(&CGID_ShellServiceObject, SSOCMDID_CLOSE, 0, NULL, NULL);
g_pctNetShell->Release();
g_pctNetShell = NULL;
}
}
} // extern C
/************************************************************************************
IUnknown Implementation
************************************************************************************/
HRESULT CSysTray::QueryInterface(REFIID iid, void** ppvObject)
{
HRESULT hr = S_OK;
if ((iid == IID_IOleCommandTarget) || (iid == IID_IUnknown))
{
*ppvObject = (IOleCommandTarget*) this;
}
else
{
*ppvObject = NULL;
hr = E_NOINTERFACE;
}
if (hr == S_OK)
{
((IUnknown*) (*ppvObject))->AddRef();
}
return hr;
}
ULONG CSysTray::AddRef()
{
return InterlockedIncrement(&m_cRef);
}
ULONG CSysTray::Release()
{
if (InterlockedDecrement(&m_cRef) == 0)
{
delete this;
return 0;
}
return m_cRef;
}
/************************************************************************************
IOleCommandTarget Implementation
************************************************************************************/
HRESULT CSysTray::QueryStatus(const GUID* pguidCmdGroup, ULONG cCmds, OLECMD prgCmds[], OLECMDTEXT* pCmdText)
{
HRESULT hr = OLECMDERR_E_UNKNOWNGROUP;
if (*pguidCmdGroup == CGID_ShellServiceObject)
{
// We like Shell Service Object notifications...
hr = S_OK;
}
return hr;
}
HRESULT CSysTray::Exec(const GUID* pguidCmdGroup, DWORD nCmdID, DWORD nCmdExecOpt, VARIANTARG* pvaIn, VARIANTARG* pvaOut)
{
HRESULT hr = OLECMDERR_E_UNKNOWNGROUP;
if (*pguidCmdGroup == CGID_ShellServiceObject)
{
// Handle Shell Service Object notifications here.
switch (nCmdID)
{
case SSOCMDID_OPEN:
hr = CreateSysTrayThread();
break;
case SSOCMDID_CLOSE:
hr = DestroySysTrayWindow();
break;
default:
hr = S_OK;
break;
}
}
return hr;
}
/************************************************************************************
Constructor/Destructor Implementation
************************************************************************************/
CSysTray::CSysTray(BOOL fRunTrayOnConstruct)
{
m_cRef = 1;
InterlockedIncrement(&g_cLocks);
if (fRunTrayOnConstruct)
{
// We are being called through SHLoadInProc - Launch the systray thread immediately
CreateSysTrayThread();
}
}
CSysTray::~CSysTray()
{
InterlockedDecrement(&g_cLocks);
}
/************************************************************************************
Private Function Implementation
************************************************************************************/
HRESULT CSysTray::CreateSysTrayThread()
{
HRESULT hr = S_OK;
HANDLE hThread;
DWORD dwThreadId;
hThread = CreateThread(NULL, 0, CSysTray::SysTrayThreadProc, NULL, 0, &dwThreadId);
if (hThread != NULL)
{
CloseHandle(hThread);
}
else
hr = E_FAIL;
return hr;
}
DWORD CSysTray::SysTrayThreadProc(void* lpv)
{
// We pass a "" for the command line to so that the tray applets dont' start.
TCHAR szModule[MAX_PATH];
GetModuleFileName(g_hinstDll, szModule, ARRAYSIZE(szModule));
HINSTANCE hInstThis = LoadLibrary(szModule);
int Result = SysTrayMain(g_hinstDll, NULL, TEXT(""), SW_SHOWNORMAL);
FreeLibraryAndExitThread(hInstThis, (DWORD) Result);
// Never gets here
return 0;
}
HRESULT CSysTray::DestroySysTrayWindow()
{
HWND hExistWnd = FindWindow(SYSTRAY_CLASSNAME, NULL);
if (hExistWnd)
{
// Destroy the window. Note that we can't use DestroyWindow since
// the window is on a different thread and DestroyWindow fails.
SendMessage(hExistWnd, WM_CLOSE, 0, 0);
}
return S_OK;
}