刚开始学习GTK编程，中间遇到很多问题，将解决方法记录下来，
希望多多交流
1。添加多线程支持库，先make clean 清除；再将将configure.in文件中的
PKG_CHECK_MODULES(GTK,gtk+-2.0 gdk-2.0, , exit)改为
PKG_CHECK_MODULES(GTK,gtk+-2.0 gdk-2.0 gthread-2.0 , , exit)
2.或者使用手动编译，命令如下
gcc -o thread thread.c `pkg-config --cflags --libs gtk+-2.0 gthread-2.0`
3.示例代码
#include <gtk/gtk.h>
static GtkWidget *fixed;
static GtkWidget *button1;
static GtkWidget *button2;
void our_thread1(GtkWidget *button)
{
gint x,y,towards;
x=40;
y=40;
towards=1;
for (;;)
{
g_usleep(4);
gdk_threads_enter();
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==40) towards=5;
}
gdk_threads_leave();
}
}
void our_thread2(GtkWidget *button)
{
gint i,j,forward;
i=40;
j=40;
forward=1;
for (;;)
{
g_usleep(1);
gdk_threads_enter();
gtk_fixed_move(GTK_FIXED(fixed),button,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);
}
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);
gtk_widget_show_all(window);
gdk_threads_enter();
gtk_main();
gdk_threads_leave();
return FALSE;
}
//编译选项如下:
//gcc -o thread thread.c `pkg-config --cflags --libs gtk+-2.0 gthread-2.0`
