Function ResolveInputTargetWindow

libop/window/WindowText.cpp:133–150

}

HWND ResolveInputTargetWindow(HWND hwnd) {
    if (!::IsWindow(hwnd))
        return nullptr;

    DWORD target_thread = ::GetWindowThreadProcessId(hwnd, nullptr);
    if (target_thread != 0) {
        GUITHREADINFO gti = {0};
        gti.cbSize = sizeof(gti);
        if (::GetGUIThreadInfo(target_thread, &gti)) {
            if (::IsWindow(gti.hwndFocus) && (gti.hwndFocus == hwnd || ::IsChild(hwnd, gti.hwndFocus)))
                return gti.hwndFocus;
            if (::IsWindow(gti.hwndActive) && (gti.hwndActive == hwnd || ::IsChild(hwnd, gti.hwndActive)))
                return gti.hwndActive;
        }
    }

    return hwnd;
}

bool SendCharMessage(HWND hwnd, UINT msg, wchar_t ch) {
    DWORD_PTR result = 0;