page no.44
"The title of my program" //window name,This will be shown in the titlebar 
ws_OVERLAPPEDWINDOW,//windoe style creates an overlapped window with the WS_OVERLAPPED, OS_CAPTION 
//WS_SYSMENU, WS_THICKFRAME, WS_MINIMIZEBOX,and WS_MAXIMIZEBOX syles
CW_USEDEFAULT //horizontal position of window 
CW-USEDEFAULT  //makes th system select default position of window 
CW-USEDEFAULT//vertical position of window
240,               //window
120,             //window height 
NULl,                 //handle to parent or owener window             
NULL ,          //  menu handle or child identifier 
hInstances ,           //handle to application instances 
NULL,               //wimdow creation data 
);*/
// if the function succeeds, the  return value is a handle to the mnew window.
if (hwnd==NULL)
{
Messagebox (NULL,"window creation failed ",MB_ICONEXCLAMATION /MB_BOOK);
return (0);
}
show Window () 