CreateWindowExA

function CreateWindowExA(

  dwExStyle: DWORD;

  lpClassName: LPCSTR;

  lpWindowName: LPCSTR;

  dwStyle: DWORD;

  X: Integer;

  Y: Integer;

  nWidth: Integer;

  nHeight: Integer;

  hWndParent: HWND;

  hMenu: HMENU;

  hInstance: HINST;

  lpParam: LPVOID

):HWND;