Win32API: CreateWindowEx ウィンドウを生成します。 定義 Declare Function CreateWindowEx Lib "user32" Alias "CreateWindowExA" ( dwExStyle As DWord, lpClassName As BytePtr, lpWindowName As BytePtr, dwStyle As DWord, x As Long, y As Long, nWidth As Long, nHeight As Long, hWndParent As HWND, hMenu As HMENU, hInstance As HINSTANCE, lpParm As VoidPtr) As HWND dwExStyle ウィンドウの拡張スタイルを指定します。詳しい情報は「拡張スタイルについて」をご覧下さい。 lpCl