gtk多线程编程用例

#include <gtk/gtk.h> 
static GtkWidget *fixed; 
static GtkWidget *button1; 
static GtkWidget *button2; 
int running = 1;
void our_thread1(GtkWidget *button) 
...{ 
 gint x,y,towards; 
 x=40; 
 y=40; 
 towards=1; 
 while (running)
 ...{ 
     g_usleep(1); //一定要加
  gdk_threads_enter(); //在需要与图形窗口交互的时候加
  gtk_fixed_move(GTK_FIXED(fixed),button,x,y); 
  switch(towards) 
  ...{ 
  case 1: 
   x=x+10; 
   if (x==250) towards=2; 
   break; 
  case 2: 
   y=y+10; 
   if (y==250) towards=3; 
   break; 
  case 3: 
   x=x-10; 
   if (x==40) towards=4; 
   break; 
  case 4: 
   y=y-10; 
   if (y==50) towards=5; 
  } 
  gdk_threads_leave();  //搭配上面的
 } 
} 

void our_thread2(GtkWidget *button) 
...{ 
 gint i,j,forward; 
 i=40; 
 j=40; 
 forward=1; 
 while (running) 
 ...{ 
  g_usleep(1); 
  gdk_threads_enter(); 
  gtk_fixed_move(GTK_FIXED(fixed),button2,i,j); 
  switch(forward) 
  ...{ 
  case 1: 
   i=i+10; 
   if (i==290) forward=2; 
   break; 
  case 2: 
   j=j+10; 
   if (j==250) forward=3; 
   break; 
  case 3: 
   i=i-10; 
   if (i==40) forward=4; 
   break; 
  case 4: 
   j=j-10; 
   if (j==40) forward=5; 
  } 
  gdk_threads_leave(); 
 } 
} 
void on_begin(GtkWidget* button,gpointer data) 
...{ 
     gtk_widget_set_sensitive(button,FALSE); 
     g_thread_create(our_thread1,button1,FALSE,NULL); 
     g_thread_create(our_thread2,button2,FALSE,NULL); 
} 
void *run_f(GtkWidget *butt,gpointer data)
...{
    running = 0;
}
int main(int argc,char* argv[]) 
...{ 
     GtkWidget *window,*view; 
     GtkWidget *vbox,*button,*label;

     if (!g_thread_supported()) 
      g_thread_init(NULL); 

     gdk_threads_init();

     gtk_init(&argc,&argv); 
     window=gtk_window_new(GTK_WINDOW_TOPLEVEL); 
     gtk_window_set_title(GTK_WINDOW(window),"thread apllication"); 
     g_signal_connect(G_OBJECT(window),"delete_event", 
          G_CALLBACK(gtk_main_quit),NULL); 
     gtk_container_set_border_width(GTK_CONTAINER(window),10); 
     vbox=gtk_vbox_new(FALSE,0); 
     gtk_container_add(GTK_CONTAINER(window),vbox); 
     label=gtk_label_new("Notice! Button is moving"); 
     gtk_box_pack_start(GTK_BOX(vbox),label,FALSE,FALSE,0); 
     view=gtk_viewport_new(NULL,NULL); 
     gtk_box_pack_start(GTK_BOX(vbox),view,FALSE,FALSE,0); 
     fixed=gtk_fixed_new(); 
     gtk_widget_set_usize(fixed,330,330); 
     gtk_container_add(GTK_CONTAINER(view),fixed); 
     button1=gtk_button_new_with_label("1"); 
     button2=gtk_button_new_with_label("2"); 
     gtk_fixed_put(GTK_FIXED(fixed),button1,10,10); 
     gtk_fixed_put(GTK_FIXED(fixed),button2,40,40); 
 
     button=gtk_button_new_with_label("Start"); 
     gtk_box_pack_start(GTK_BOX(vbox),button,FALSE,FALSE,5); 
     g_signal_connect(G_OBJECT(button),"clicked", 
          G_CALLBACK(on_begin),NULL);                // call on_begin
    
     GtkWidget *run = gtk_button_new_with_label("stop");
     gtk_box_pack_start(GTK_BOX(vbox),run,FALSE,FALSE,5); 
     g_signal_connect(G_OBJECT(run),"clicked", 
          G_CALLBACK(run_f),NULL);                // call on_begin

     gtk_widget_show_all(window); 
     gdk_threads_enter(); 
     gtk_main(); 
     gdk_threads_leave(); 
     return FALSE; 
}

 Makefile文件：

all: test

test: gthread.c
    gcc -o test gthread.c `pkg-config --cflags --libs gtk+-2.0 gthread-2.0`