module.c

来自「gtk插件程序例子说明」· C语言 代码 · 共 86 行

//module.c
#include <gtk/gtk.h>
#include <gmodule.h>

typedef void (*About) (void);
typedef void (*Dialog) (gchar* message);

GModule *module;

void	on_open(GtkWidget *button, gpointer data)
{
	module = g_module_open("./libhello.so", 0); // G_MODULE_BIND_LAZY);
	if(module == NULL)
		g_error("ERROR:%s", g_module_error());
	gtk_widget_set_sensitive(button, FALSE);
}

void	on_dialog(GtkWidget *button, gpointer data)
{
	Dialog dialog;

	if(g_module_symbol(module,"create_message_dialog",(gpointer*)&dialog))
	{
		dialog("这是一个测试用的消息对话框。");
	}
	else
	{
		g_error("ERROR:%s", g_module_error());
	}	
}

void	on_about(GtkWidget *button, gpointer data)
{
	About about;

	if(g_module_symbol(module,"about",(gpointer*)&about))
	{
		about();
	}
	else
	{
		g_error("ERROR:%s", g_module_error());
	}
}

void	on_delete_event(GtkWidget *widget, GdkEvent *event, gpointer data)
{
	g_module_close(module);
	gtk_main_quit();
}

int	main(int argc, char* argv[])
{
	GtkWidget *window, *vbox, *button;

	gtk_init(&argc, &argv);

	window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
	gtk_window_set_title(GTK_WINDOW(window),"插件功能 -- 动态链接库调用");
	g_signal_connect(G_OBJECT(window),"delete_event",
			G_CALLBACK(on_delete_event),NULL);
	gtk_container_set_border_width(GTK_CONTAINER(window),10);

	vbox = gtk_vbox_new(FALSE,0);
	gtk_container_add(GTK_CONTAINER(window),vbox);

	button = gtk_button_new_with_label("调用插件");
	gtk_box_pack_start(GTK_BOX(vbox), button, FALSE, FALSE, 0);
	g_signal_connect(G_OBJECT(button), "clicked",
			G_CALLBACK(on_open), NULL);

	button = gtk_button_new_with_label("显示信息对话框");
	gtk_box_pack_start(GTK_BOX(vbox),button,FALSE,FALSE,0);
	g_signal_connect(G_OBJECT(button),"clicked",
			G_CALLBACK(on_dialog),NULL);

	button = gtk_button_new_with_label("显示关于对话框");
	gtk_box_pack_start(GTK_BOX(vbox),button,FALSE,FALSE,0);
	g_signal_connect(G_OBJECT(button),"clicked",
			G_CALLBACK(on_about),NULL);

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