//  ( m4.C )    
//      コ−ルバック関数に複数の引数を渡す方法
//      

#include <iostream.h>           
#include <Xm/BulletinB.h>      
#include <Xm/PushB.h>           

extern class Push ;
struct A {
    char  str[20] ;
    Push* btn ;
};

class Push {                                /* 注：ここは A cb 定義でいいと思う */
    friend  void push_cb( Widget,caddr_t,caddr_t ) ; 
    Widget  motif ;
    A       cb ;                                // A* cb ［ポインタを使う場合］
public:                                     
    Push( Widget,int,int,char* ) ;
    ~Push() { XtDestroyWidget( motif ) ; }      // delete cb 追加
    void pushCB( char* ) ;       
} ;

Push::Push( Widget wid,int x,int y,char* cmd )
{               
    Arg     args[2] ;            
                                                // cb = new A, cb->str, cb->btn 
    strcpy( cb.str,cmd ) ; cb.btn = this ;      
    XtSetArg( args[0],XmNx,x ) ; XtSetArg( args[1],XmNy,y )  ; 
    motif = XmCreatePushButton( wid,"PB",args,2 ) ; XtManageChild( motif ) ;                         
    XtAddCallback( motif,XmNactivateCallback,(XtCallbackProc)push_cb,(caddr_t)&cb ) ;
}                                               // (caddr_t)cb
                          
void Push::pushCB( char* str )
{                
    cout << "Push :" << str << endl ; cout.flush() ;
}

void push_cb( Widget ww,caddr_t myself,caddr_t event ) 
{
    A *a = (A*)myself ;
    Push* push = (Push*)(a->btn) ;
    if ( push ) push->pushCB( a->str ) ;
}


static String fallback[] = {       
    "*BB.x    :   0","*BB.y     :   0",
    "*BB.width: 250","*BB.height: 200", NULL
} ;                          


void main( int argc,char **argv )   
{                                 
    XtAppContext appCon ; Widget top,bb ;    
                        
    top = XtAppInitialize( &appCon,NULL,NULL,0,(Cardinal*)&argc,argv,
                           fallback,NULL,0 ) ;
    bb = XmCreateBulletinBoard( top,"BB",NULL,0 ) ; XtManageChild( bb ) ;                         
                           
    Push a( bb, 50,50,"hello katou" ) ;
    Push b( bb,150,50,"hello haruo" ) ;

    XtRealizeWidget( top ) ; XtAppMainLoop( appCon ) ;                              
}