/**
* Choose the appropriate launch type based on the user's previously chosen
* host environment, along with system constraints.
*
* AHE_DESKTOP = 0, AHE_IMMERSIVE = 1
*/
AHE_TYPE GetLaunchType()
{
AHE_TYPE ahe = GetLastAHE();
Log(L"Previous AHE: %d", ahe);
// Default launch settings from GetLastAHE() can be overriden by
// custom parameter values we receive.
if (mRequestType == DESKTOP_RESTART) {
Log(L"Restarting in desktop host environment.");
return AHE_DESKTOP;
} else if (mRequestType == METRO_RESTART) {
Log(L"Restarting in metro host environment.");
ahe = AHE_IMMERSIVE;
} else if (mRequestType == METRO_UPDATE) {
// Shouldn't happen from GetValue above, but might from other calls.
ahe = AHE_IMMERSIVE;
}
if (ahe == AHE_IMMERSIVE) {
if (!IsDefaultBrowser()) {
Log(L"returning AHE_DESKTOP because we are not the default browser");
return AHE_DESKTOP;
}
if (!IsDX10Available()) {
Log(L"returning AHE_DESKTOP because DX10 is not available");
return AHE_DESKTOP;
}
}
return ahe;
}
// IExecuteCommandApplicationHostEnvironment
IFACEMETHODIMP GetValue(AHE_TYPE *aLaunchType)
{
Log(L"IExecuteCommandApplicationHostEnvironment::GetValue()");
*aLaunchType = AHE_DESKTOP;
mIsDesktopRequest = true;
if (!mUnkSite) {
Log(L"No mUnkSite.");
return S_OK;
}
HRESULT hr;
IServiceProvider* pSvcProvider = NULL;
hr = mUnkSite->QueryInterface(IID_IServiceProvider, (void**)&pSvcProvider);
if (!pSvcProvider) {
Log(L"Couldn't get IServiceProvider service from explorer. (%X)", hr);
return S_OK;
}
IExecuteCommandHost* pHost = NULL;
// If we can't get this it's a conventional desktop launch
hr = pSvcProvider->QueryService(SID_ExecuteCommandHost,
IID_IExecuteCommandHost, (void**)&pHost);
if (!pHost) {
Log(L"Couldn't get IExecuteCommandHost service from explorer. (%X)", hr);
SafeRelease(&pSvcProvider);
return S_OK;
}
SafeRelease(&pSvcProvider);
EC_HOST_UI_MODE mode;
if (FAILED(pHost->GetUIMode(&mode))) {
Log(L"GetUIMode failed.");
SafeRelease(&pHost);
return S_OK;
}
// 0 - launched from desktop
// 1 - ?
// 2 - launched from tile interface
Log(L"GetUIMode: %d", mode);
if (!IsDefaultBrowser()) {
mode = ECHUIM_DESKTOP;
}
if (mode == ECHUIM_DESKTOP) {
Log(L"returning AHE_DESKTOP");
SafeRelease(&pHost);
return S_OK;
}
SafeRelease(&pHost);
if (!IsDX10Available()) {
Log(L"returning AHE_DESKTOP because DX10 is not available");
*aLaunchType = AHE_DESKTOP;
mIsDesktopRequest = true;
} else {
Log(L"returning AHE_IMMERSIVE");
*aLaunchType = AHE_IMMERSIVE;
mIsDesktopRequest = false;
}
return S_OK;
}
