listing_8_30.c

来自「This source code has been tested under O」· C语言 代码 · 共 60 行

/***********************************************************************
**                                                                    **
**  listing_8_30.c                                                    **
**                                                                    **
**  Demonstration of accelerators, using two pushbuttons.             **
**                                                                    **
***********************************************************************/


#include <Xm/BulletinBP.h>
#include <Xm/LabelP.h>
#include <Xm/PushBP.h>

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


void    Btn1CB();                       /* FORWARD Definition         */


Widget  appshell,
        the_bb,
        buttons[2];


void main( argc, argv )
    int     argc;
    char    *argv[];
{
    appshell = XtInitialize( argv[0], "Listing_8_30", NULL, 0, &argc, argv );

    the_bb = XmCreateBulletinBoard( appshell, "BB", NULL, 0 );
    XtManageChild( the_bb );

    buttons[0] = XmCreatePushButton( the_bb, "Button_0", NULL, 0 );
    buttons[1] = XmCreatePushButton( the_bb, "Button_1", NULL, 0 );
    XtManageChildren( buttons, 2 );

    XtAddCallback( buttons[1], XmNactivateCallback, Btn1CB, NULL );

    XtInstallAccelerators( buttons[0], buttons[1] );

    XtRealizeWidget( appshell );
    XtMainLoop();
}



void Btn1CB( w, client_data, call_data )
    Widget              w;
    caddr_t             client_data;
    XmAnyCallbackStruct *call_data;
{
    printf( "\nButton 1 Activated\n" );
    if (call_data->event == NULL)
        printf( "Event is NULL\n" );
    else
        printf( "Event is not NULL\n" );
}