GTK进阶学习：事件盒子 源代码

#include <gtk/gtk.h> // "button_press_event"信号处理函数 gboolean button_pressed( GtkWidget *eventbox, GdkEventButton *event, GtkLabel *label ) { if (event->type == GDK_2BUTTON_PRESS){// 双击 const gchar *text = gtk_label_get_text(label); // 获取label内容 if( text[0] == 'D' ){ gtk_label_set_text(label, "I Was Double-Clicked!"); // 修改 }else{ gtk_label_set_text(label, "Double-Click Me Again!"); } } return FALSE; } int main( int argc, char *argv[] ) { gtk_init(&argc, &argv); GtkWidget *window = gtk_window_new(GTK_WINDOW_TOPLEVEL); // 主窗口 gtk_window_set_title(GTK_WINDOW(window), "Event Box"); // 标题 gtk_container_set_border_width(GTK_CONTAINER(window), 10); gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER); // 居中显示 gtk_widget_set_size_request(window, 200, 50); // 最小大小 g_signal_connect(window, "destroy",G_CALLBACK(gtk_main_quit), NULL ); GtkWidget *eventbox = gtk_event_box_new(); // 事件盒子的创建 gtk_widget_set_events(eventbox, GDK_BUTTON_PRESS_MASK); // 捕获鼠标点击事件 gtk_container_add( GTK_CONTAINER(window), eventbox ); // 事件盒子放入窗口 GtkWidget *label = gtk_label_new("Double-Click Me!"); // label gtk_container_add( GTK_CONTAINER(eventbox), label ); // label放入事件盒子里 // 处理"button_press_event"信号，把标签label传给回调函数 g_signal_connect(eventbox, "button_press_event", G_CALLBACK(button_pressed), (gpointer)label); gtk_widget_show_all(window); // 显示所有控件 gtk_main(); return 0; }