вопрос по external и др - 5

#define WS_VISIBLE 268435456
#define WS_CHILD 1073741824
#define BS_GROUPBOX 7
#define BS_CENTER 768

external(INT, "CreateWindow", "CreateWindowExA", "User32.dll" );

int b0, b1;

createdialog(0);
showdialog(0, "Диалог",100, 100, 300, 300, 1, 1);


loop()sleep(10);

function getmessage(0, WM_CREATE)
{
b0=CreateWindow(0, "BUTTON", "Текст слева", BS_GROUPBOX | WS_CHILD | WS_VISIBLE , 10, 10,200, 100, gethwnd(0), 0, 0, 0);
b1=CreateWindow(0, "BUTTON", "Текст По центру", BS_CENTER | BS_GROUPBOX | WS_CHILD | WS_VISIBLE , 10, 120,200, 100, gethwnd(0), 0, 0, 0);
}