function buttonpro(var i){
switch (i)
{
case 0:
gv=2;
break;
case 1:
gv=3;
break;
}
}
pan_setbutton(gp[0],0,1, // set a new push button for quitting the game
10,10,gb[1],gb[2],gb[3],NULL,buttonpro(1),NULL,NULL);
buttonpro(1) is error,i want set function parameter for buttonpro.is it impossibility?