初学,一个关于窗口的小问题


     hwnd = CreateWindow (szAppName,                 
                          TEXT ("The first window"),  
                          WS_OVERLAPPEDWINDOW,        
                          400,                           
                          40,                      
                          300,                        
                          300,                        
                          NULL,                      
                          NULL,                      
                          hInstance,                 
                          NULL) ;                     
    
 hwnd = CreateWindow (szAppName,                 
                          TEXT ("The second window"),  
                          WS_OVERLAPPEDWINDOW,        
                          400,                           
                          40,                      
                          300,                        
                          300,                        
                          NULL,                      
                          NULL,                      
                          hInstance,                 
                          NULL) ;                     
   偶用同一个窗口类创建了以上两个大小一样的窗口,怎么样才能使它们输出的文本不一样呢?要能一起弹出,比如一个输出"hello,world" ,另外一个则输出 "hello,windows xp",偶才学了点皮毛,想不出来哦