gtk中鼠标左右键合计是哪个信号？

yyy790601

GdkEventButton *event；
...
switch(event->button)
        {
        case 1: //左键按下
        case 3: //右键按下
           }

请问如何判断左右键一起按下？

whyglinux

通常的三键鼠标可这样实现：

1.   if ( event->button == 1 && event->state & GDK_BUTTON3_MASK ||
   
2.        event->button == 3 && event->state & GDK_BUTTON1_MASK )
   
3.     g_print( "Both left and right button clicked.\n" );
   
4.   else if ( event->button == 1 )
   
5.     g_print( "left button clicked.\n" );
   
6.   else if ( event->button == 3 )
   
7.     g_print( "right button clicked.\n" );
   
8.   else
   
9.     g_print( "middle button clicked.\n" );
   

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