gtk+如何设置按纽的宽度以及高度？？

#include <gtk/gtk.h>
#include <stdio.h>

int main(int argc,char** argv)
{
gtk_init(&argc,&argv);
GtkWidget *window;
GtkWidget *frame;
GtkWidget *vbox;
GtkWidget *check_button1,*check_button2;
GtkWidget *radio_button1,*radio_button2,*radio_button3,*radio_button4;
GtkWidget *image;
GSList *radio_button_group=NULL;
window=gtk_window_new(GTK_WINDOW_TOPLEVEL);
frame=gtk_frame_new("frame GTK＋应用程序");
vbox=gtk_vbox_new(FALSE,0);
check_button1=gtk_check_button_new_with_label("选项A");
check_button2=gtk_check_button_new_with_label("选项B");
radio_button1=gtk_radio_button_new_with_label(NULL,"选项1");
radio_button2=gtk_radio_button_new_with_label(NULL,"选项2");
radio_button3=gtk_radio_button_new_with_label(NULL,"选项3");
radio_button4=gtk_radio_button_new_with_label(NULL,"选项4");

gtk_radio_button_set_group(GTK_RADIO_BUTTON(radio_button1),radio_button_group);
gtk_radio_button_set_group(GTK_RADIO_BUTTON(radio_button2),radio_button_group);
gtk_radio_button_set_group(GTK_RADIO_BUTTON(radio_button3),radio_button_group);
gtk_radio_button_set_group(GTK_RADIO_BUTTON(radio_button4),radio_button_group);

//将链表加入按纽；

radio_button_group=gtk_radio_button_get_group(GTK_RADIO_BUTTON(radio_button1));
radio_button_group=gtk_radio_button_get_group(GTK_RADIO_BUTTON(radio_button2));
radio_button_group=gtk_radio_button_get_group(GTK_RADIO_BUTTON(radio_button3));
radio_button_group=gtk_radio_button_get_group(GTK_RADIO_BUTTON(radio_button5));
//将单选按纽作为成员加入链表；

image=gtk_image_new_from_file("/Screenshot.png");
gtk_widget_set_size_request(window,400,250);
gtk_container_set_border_width(GTK_CONTAINER(window),20);
gtk_window_set_position(GTK_WINDOW(window),GTK_WIN_POS_CENTER);
gtk_widget_set_size_request(check_button1,100,40);
gtk_container_add(GTK_CONTAINER(window),frame);
gtk_container_add(GTK_CONTAINER(frame),vbox);
gtk_box_pack_start(GTK_BOX(vbox),check_button1,FALSE,FALSE,0);
gtk_box_pack_start(GTK_BOX(vbox),check_button2,FALSE,FALSE,0);

gtk_box_pack_start(GTK_BOX(vbox),radio_button1,FALSE,FALSE,0);
gtk_box_pack_start(GTK_BOX(vbox),radio_button2,FALSE,FALSE,0);
gtk_box_pack_start(GTK_BOX(vbox),radio_button3,FALSE,FALSE,0);
gtk_box_pack_start(GTK_BOX(vbox),radio_button4,FALSE,FALSE,0);

gtk_container_add(GTK_CONTAINER(check_button1),image);

gtk_widget_show_all(window);
gtk_main();
return 0;



}
运行后发现 单选按纽 全部被选中了，，，，，，，，

gtk_radio_button_set_group 是设置成一个名字吧。
多看devhelp