(旧Siv3D) 押されたキーの名前を表示

https://gyazo.com/0b6fd6b16e4fd6fd14869246611f51c4

code:keyname.cpp

String join(const Array<String>& arr, const String& sep)

{

String joined = L"";

for (const auto& str : arr)

{

if (joined.length)

{

joined += sep;

}

joined += str;

}

return joined;

}

template <class Container, class T>

bool exists(const Container& c, const T& val)

{

return std::find(c.begin(), c.end(), val) != c.end();

}

// 仮想キーコードに対応するキーの名前を取得する

String getKeyName(const uint8 vkcode)

{

const Array<uint8> vkext = {

VK_INSERT, VK_DELETE, VK_HOME, VK_END, VK_PRIOR, VK_NEXT, VK_UP, VK_DOWN, VK_LEFT, VK_RIGHT,

};

const LONG scancode = ::MapVirtualKeyW(vkcode, MAPVK_VK_TO_VSC) | (exists(vkext, vkcode) ? 0x100 : 0);

if (::GetKeyNameTextW((scancode << 16) | (1 << 25), name, sizeof(name)) == 0)

{

return L"";

}

return name;

}

void Main()

{

const Font font(48, Typeface::Bold);

// 押されたキー一覧

Array<String> keynames;

while (System::Update())

{

if (Input::AnyKeyClicked())

{

keynames.clear();

for (const auto& key : Input::GetActiveKeys())

{

const String name = getKeyName(key.code);

if (!exists(keynames, name)) //"Ctrl"などの重複の回避

{

keynames.push_back(name);

}

}

}

font(join(keynames, L", ")).drawCenter(Window::Center());

}

}