TDR Audio Nova plugin doesn't render in window - C++

[florin0x01]

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Hello, doing an integration with TDR audio Nova.

General flow is AEffect gets loaded via DLL VstPluginMain function.
Then, it does calls like this:

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effect->dispatcher(effect, effGetEffectName, 0, 0, effectName, 0);
effect->dispatcher(effect, effGetVendorString, 0, 0, vendorString, 0);
effect->dispatcher(effect, effOpen, 0, 0, nullptr, 0.0f);
size_t sampleRate = audio_output_get_sample_rate(obs_get_audio());
effect->dispatcher(effect, effSetSampleRate, 0, 0, nullptr, sampleRate);
int blocksize = BLOCK_SIZE;
effect->dispatcher(effect, effSetBlockSize, 0, blocksize, nullptr, 0.0f);
effect->dispatcher(effect, effMainsChanged, 0, 1, nullptr, 0);

Then, I do something like:

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windowWorker = std::thread(std::bind(&EditorWidget::buildEffectContainer_worker, this));

so, in the

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buildEffectContainer_worker 

function (when the thread starts), it creates a window and calls

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effEditOpen

, but then the plugin hangs, not sure why ?

Other VST plugins load and work ok.

Code in buildEffectContainer_worker function which creates a window and calls effEditOpen:

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wcex.lpfnWndProc   = DefWindowProc;
wcex.hInstance     = GetModuleHandleW(nullptr);
wcex.lpszClassName = L"Minimal VST host - Guest VST Window Frame";
RegisterClassExW(&wcex);

LONG style = WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_DLGFRAME | WS_POPUP | WS_SYSMENU | WS_CAPTION | WS_MINIMIZEBOX;
LONG exStyle = WS_EX_DLGMODALFRAME;
m_hwnd = CreateWindowEx(exStyle, 
		wcex.lpszClassName, 
		TEXT(""), 
		style, 0, 0, 0, 0, nullptr, nullptr, nullptr, nullptr);
m_effect->dispatcher(m_effect, effEditOpen, 0, 0, m_hwnd, 0); //-> hangs here, no UI is displayed.