Why C++ Console App work only in my dev PC?

[Douglas Filipe]

Hy All!

It`s my code

#include <windows.h>
#include <dshow.h>

#pragma comment(lib, "strmiids")

HRESULT EnumerateDevices(REFGUID category, IEnumMoniker** ppEnum)
{
// Create the System Device Enumerator.
ICreateDevEnum* pDevEnum;
HRESULT hr = CoCreateInstance(CLSID_SystemDeviceEnum, NULL,
CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&pDevEnum));

if (SUCCEEDED(hr))
{
// Create an enumerator for the category.
hr = pDevEnum->CreateClassEnumerator(category, ppEnum, 0);
if (hr == S_FALSE)
{
hr = VFW_E_NOT_FOUND; // The category is empty. Treat as an error.
}
pDevEnum->Release();
}
return hr;
}

void DisplayDeviceInformation(IEnumMoniker* pEnum)
{
IMoniker* pMoniker = NULL;

while (pEnum->Next(1, &pMoniker, NULL) == S_OK)
{
IPropertyBag* pPropBag;
HRESULT hr = pMoniker->BindToStorage(0, 0, IID_PPV_ARGS(&pPropBag));
if (FAILED(hr))
{
pMoniker->Release();
continue;
}

VARIANT var;
VariantInit(&var);

// Get description or friendly name.
hr = pPropBag->Read(L"Description", &var, 0);
if (FAILED(hr))
{
hr = pPropBag->Read(L"FriendlyName", &var, 0);
}
if (SUCCEEDED(hr))
{
printf("%S\n", var.bstrVal);
VariantClear(&var);
}

hr = pPropBag->Write(L"FriendlyName", &var);

// WaveInID applies only to audio capture devices.
hr = pPropBag->Read(L"WaveInID", &var, 0);
if (SUCCEEDED(hr))
{
printf("WaveIn ID: %d\n", var.lVal);
VariantClear(&var);
}

hr = pPropBag->Read(L"DevicePath", &var, 0);
if (SUCCEEDED(hr))
{
// The device path is not intended for display.
printf("Device path: %S\n", var.bstrVal);
VariantClear(&var);
}

pPropBag->Release();
pMoniker->Release();
}
}

void main()
{
HRESULT hr = CoInitializeEx(NULL, COINIT_MULTITHREADED);
if (SUCCEEDED(hr))
{
IEnumMoniker* pEnum;

hr = EnumerateDevices(CLSID_VideoInputDeviceCategory, &pEnum);
if (SUCCEEDED(hr))
{
DisplayDeviceInformation(pEnum);
pEnum->Release();
}
hr = EnumerateDevices(CLSID_AudioInputDeviceCategory, &pEnum);
if (SUCCEEDED(hr))
{
DisplayDeviceInformation(pEnum);
pEnum->Release();
}
CoUninitialize();
system("pause");
}
}

Works fine in a development environment running Win 8.1 and VS 2019 Enterprise.


So I copy .exe file to Win 7 PC With Visual C++ RC 2019, Net Framework 4.7.2, and It does not do what it should



Win 7 PC had installed Microphone and CABLE devices.




Douglas Filipe (sem título)

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