How to get the status from another process window? (ImmGetOpenStatus)

Hello,

I'm developing a desk software. get some questions, VC++ code, Windows10 Pro X64 20H2,

Part 1 questions:

follow line can show availablenetworks:

ShellExecute(NULL, L"open", L"explorer.exe", L"ms-availablenetworks: ", NULL, SW_SHOWNORMAL);

exclude SendMessage/PostMessage WM_LBUTTONDOWN and keybd_event(VK_xxxx 0, 0, 0);

How to show the calendar (click the clock in the lower right corner)?

How to show the Start and it's right button menu?

and how to judge that it is showing？

Part 2 questions:

Only Microsoft Pinyin input method，

i want get the input method status and judge whether it is Chinese or English (shift switch),

the follow code only can get self process status:

//bool bn = ::AttachThreadInput(::GetCurrentThreadId(), ::GetWindowThreadProcessId(hwnd, NULL), TRUE);//No effect

HIMC himc = ImmGetContext(hwnd);

//::AttachThreadInput(::GetCurrentThreadId(), ::GetWindowThreadProcessId(hwnd, NULL), false);

bool re = ImmGetOpenStatus(himc); //

how to get the status from another app process window?

thanks

Best regards

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