glade3教程（五）--对话框

白浪

打开glade  放置一个窗口，然后在窗口上放置一个按钮   然后放置一个信息对话框  在对话框上面放置两个按钮  保存为dialog.glade  如图所示

打开code::blocks 输入以下代码

  代码都比较简单

/*

作者：bailangcn

时间：2012/3/21

作者主页：bailangcn.tk

*/

#include <gtk/gtk.h>

void show_dialog(void)
{
    GtkWidget *dialog;
    GtkWidget *builder;
    GtkResponseType response;
    builder = gtk_builder_new();
    gtk_builder_add_from_file(builder, "dialog.glade", NULL);
    dialog = GTK_WIDGET(gtk_builder_get_object(builder,"messagedialog"));
    response = gtk_dialog_run (GTK_DIALOG (dialog));
    if(response==GTK_RESPONSE_OK)
    {
        g_printf("ok\n");
    }
    else if(response==GTK_RESPONSE_CANCEL)
    {
        g_printf("CANCEL\n");
    }
    gtk_widget_destroy(GTK_WIDGET(dialog));
    g_object_unref(G_OBJECT(builder));
}

int main(int argc, char *argv[])
{
    GtkBuilder *builder;

    gtk_init(&argc, &argv);
    GtkWidget *window;

    GtkWidget *button1;

    builder = gtk_builder_new();
    gtk_builder_add_from_file(builder, "dialog.glade", NULL);

    window = GTK_WIDGET(gtk_builder_get_object(builder, "window"));
    button1 = GTK_WIDGET(gtk_builder_get_object(builder,"button1"));

    g_signal_connect(G_OBJECT(window),"delete_event",G_CALLBACK(gtk_main_quit),NULL);
    g_signal_connect(G_OBJECT(button1),"pressed",G_CALLBACK(show_dialog),NULL);

   // gtk_builder_connect_signals(builder, NULL);//自动关联已在 UI 文件配置好的信号  如果你不在galde文件里面配置信号这行代码可以不用

    g_object_unref(G_OBJECT(builder));

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

运行后如下：

解释一下：在gtkdialog.h里面有这样子的定义

typedef enum
{
  /* GTK returns this if a response widget has no response_id,
   * or if the dialog gets programmatically hidden or destroyed.
   */
  GTK_RESPONSE_NONE = -1,

  /* GTK won't return these unless you pass them in
   * as the response for an action widget. They are
   * for your convenience.
   */
  GTK_RESPONSE_REJECT = -2,
  GTK_RESPONSE_ACCEPT = -3,

  /* If the dialog is deleted. */
  GTK_RESPONSE_DELETE_EVENT = -4,

  /* These are returned from GTK dialogs, and you can also use them
   * yourself if you like.
   */
  GTK_RESPONSE_OK     = -5,
  GTK_RESPONSE_CANCEL = -6,
  GTK_RESPONSE_CLOSE  = -7,
  GTK_RESPONSE_YES    = -8,
  GTK_RESPONSE_NO     = -9,
  GTK_RESPONSE_APPLY  = -10,
  GTK_RESPONSE_HELP   = -11
} GtkResponseType;

本文始发于：http://www.bailangcn.tk/?post=20转载请注明

白浪

本来我是一次性将控件从glade文件里面提取出来 ，然后运行的时候再显示，用完再隐藏起来，经测试发现第一次运行很正常，但是隐藏之后再显示出来就有些显示不出来了，不知道是什么原因，最后去国外的英文社区去看，发现蛮多人也是这样子的，有大神说在显示控件函数中再提取就好了，经测试发现的确是正常的，这样子做有什么不良的后果吗？有知道的人请赐教