Borderless C++ window doesn't trigger Windows 11's docking panel

I recently created a window with C++ and the Win32 API. I want to make a custom titlebar for it (I overrode WM_NCHITTEST to be able to drag it anywhere):

#include <windows.h>

LRESULT CALLBACK window_proc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
    if (uMsg == WM_NCHITTEST) {
        LRESULT hit = DefWindowProc(hWnd, uMsg, wParam, lParam);
        if (hit == HTCLIENT) hit = HTCAPTION;
        return hit;
    }
    return DefWindowProc(hWnd, uMsg, wParam, lParam);
}

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE, LPSTR, int) {
    WNDCLASSW window_class = {
        NULL, window_proc, NULL,NULL, hInstance,
        NULL, LoadCursor(NULL, IDC_ARROW),
        NULL, NULL, L"minimal_example_window"
    }; RegisterClassW(&window_class);
    HWND hWnd = CreateWindowW(
        L"minimal_example_window", L"",
        WS_VISIBLE | WS_POPUP | WS_SIZEBOX | WS_MAXIMIZEBOX,
        CW_USEDEFAULT,
        CW_USEDEFAULT,
        1200,
        800,
        NULL,NULL,
        hInstance,
        NULL
    );

    MSG msg; while (GetMessageW(&msg, NULL, 0, 0) > 0)
    { TranslateMessage(&msg); DispatchMessageW(&msg); }
    
    return 0;
}

But, when I do not have the WS_SIZEBOX (or WS_THICKFRAME) and the WS_MAXIMIZEBOX style on the window, dragging it to the top of the screen doesn't trigger Windows 11's dock popup.

I tried a lot of different window styles listed in Window Styles Win32 Docs, with no success.

For the record, I use clang++ 17.0.6 x86_64-w64-windows-gnu posix

Any help?

Looks like Windows's docking system requires the window to be resizable. The solution is painting over the original titlebar and creating a custom HitTest function to be able to resize the window normally. This article goes into great detail: https://learn.microsoft.com/en-us/windows/win32/dwm/customframe