我无法弄清楚如何在我的 C 代码中为我在 GLADE 中创建的消息对话框编写信号处理程序。如果我不使用 GLADE，信号处理程序将包含构建消息对话框本身的必要信息。例如，“你确定要退出吗？”消息对话框将具有以下形式:
void show_question(GtkWidget *widget, gpointer window) {
GtkWidget *dialog;
dialog = gtk_message_dialog_new(GTK_WINDOW(window),
GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_MESSAGE_QUESTION,
GTK_BUTTONS_YES_NO,
"Are you sure to quit?");
gtk_window_set_title(GTK_WINDOW(dialog), "Question");
gtk_dialog_run(GTK_DIALOG(dialog));
gtk_widget_destroy(dialog);
}
同样，“关于窗口”的形式如下:
void show_about(GtkWidget *widget, gpointer data) {
GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file("battery.png", NULL);
GtkWidget *dialog = gtk_about_dialog_new();
gtk_about_dialog_set_name(GTK_ABOUT_DIALOG(dialog), "Battery");
gtk_about_dialog_set_version(GTK_ABOUT_DIALOG(dialog), "0.9");
gtk_about_dialog_set_copyright(GTK_ABOUT_DIALOG(dialog), "(c) Jan Bodnar");
gtk_about_dialog_set_comments(GTK_ABOUT_DIALOG(dialog), "Battery is a simple tool for battery checking.");
gtk_about_dialog_set_website(GTK_ABOUT_DIALOG(dialog), "http://www.batteryhq.net");
gtk_about_dialog_set_logo(GTK_ABOUT_DIALOG(dialog), pixbuf);
g_object_unref(pixbuf), pixbuf = NULL;
gtk_dialog_run(GTK_DIALOG (dialog));
gtk_widget_destroy(dialog);
}
现在我正在 GLADE 中完全创建这些窗口，我不确定信号处理程序应该采用什么形式(在 C 中)以便连接，比如说，单击帮助 -> 关于到在 GLADE 中创建的关于窗口，或者将单击文件 -> 退出与在 GLADE 中创建的“您确定要退出吗”消息对话框连接起来。我是 GTK+ 和 Glade 的新手，我似乎找不到任何可用于解决此问题的方法。任何帮助将不胜感激。
编辑:下面是一个由两个顶级窗口组成的示例 glade XML 文件。第一个是带有包含菜单栏的单个框的主窗口。第二个是关于对话框。我正在寻找帮助编写信号处理程序，该处理程序将在单击菜单栏中的文件 -> 关于后打开关于窗口。
<?xml version="1.0" encoding="UTF-8"?>
<!-- Generated with glade 3.18.3 -->
<interface>
<requires lib="gtk+" version="3.12"/>
<object class="GtkWindow" id="window1">
<property name="can_focus">False</property>
<child>
<object class="GtkBox" id="box1">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="orientation">vertical</property>
<child>
<object class="GtkMenuBar" id="menubar1">
<property name="visible">True</property>
<property name="can_focus">False</property>
<child>
<object class="GtkMenuItem" id="menuitem1">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="label" translatable="yes">_File</property>
<property name="use_underline">True</property>
<child type="submenu">
<object class="GtkMenu" id="menu1">
<property name="visible">True</property>
<property name="can_focus">False</property>
<child>
<object class="GtkImageMenuItem" id="imagemenuitem1">
<property name="label">gtk-new</property>
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="use_underline">True</property>
<property name="use_stock">True</property>
</object>
</child>
<child>
<object class="GtkImageMenuItem" id="imagemenuitem2">
<property name="label">gtk-open</property>
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="use_underline">True</property>
<property name="use_stock">True</property>
</object>
</child>
<child>
<object class="GtkImageMenuItem" id="imagemenuitem3">
<property name="label">gtk-save</property>
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="use_underline">True</property>
<property name="use_stock">True</property>
</object>
</child>
<child>
<object class="GtkImageMenuItem" id="imagemenuitem4">
<property name="label">gtk-save-as</property>
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="use_underline">True</property>
<property name="use_stock">True</property>
</object>
</child>
<child>
<object class="GtkSeparatorMenuItem" id="separatormenuitem1">
<property name="visible">True</property>
<property name="can_focus">False</property>
</object>
</child>
<child>
<object class="GtkImageMenuItem" id="imagemenuitem5">
<property name="label">gtk-quit</property>
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="use_underline">True</property>
<property name="use_stock">True</property>
</object>
</child>
</object>
</child>
</object>
</child>
<child>
<object class="GtkMenuItem" id="menuitem2">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="label" translatable="yes">_Edit</property>
<property name="use_underline">True</property>
<child type="submenu">
<object class="GtkMenu" id="menu2">
<property name="visible">True</property>
<property name="can_focus">False</property>
<child>
<object class="GtkImageMenuItem" id="imagemenuitem6">
<property name="label">gtk-cut</property>
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="use_underline">True</property>
<property name="use_stock">True</property>
</object>
</child>
<child>
<object class="GtkImageMenuItem" id="imagemenuitem7">
<property name="label">gtk-copy</property>
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="use_underline">True</property>
<property name="use_stock">True</property>
</object>
</child>
<child>
<object class="GtkImageMenuItem" id="imagemenuitem8">
<property name="label">gtk-paste</property>
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="use_underline">True</property>
<property name="use_stock">True</property>
</object>
</child>
<child>
<object class="GtkImageMenuItem" id="imagemenuitem9">
<property name="label">gtk-delete</property>
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="use_underline">True</property>
<property name="use_stock">True</property>
</object>
</child>
</object>
</child>
</object>
</child>
<child>
<object class="GtkMenuItem" id="menuitem3">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="label" translatable="yes">_View</property>
<property name="use_underline">True</property>
</object>
</child>
<child>
<object class="GtkMenuItem" id="menuitem4">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="label" translatable="yes">_Help</property>
<property name="use_underline">True</property>
<child type="submenu">
<object class="GtkMenu" id="menu3">
<property name="visible">True</property>
<property name="can_focus">False</property>
<child>
<object class="GtkImageMenuItem" id="imagemenuitem10">
<property name="label">gtk-about</property>
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="use_underline">True</property>
<property name="use_stock">True</property>
</object>
</child>
</object>
</child>
</object>
</child>
</object>
<packing>
<property name="expand">False</property>
<property name="fill">True</property>
<property name="position">0</property>
</packing>
</child>
</object>
</child>
</object>
<object class="GtkAboutDialog" id="window_about">
<property name="can_focus">False</property>
<property name="type_hint">dialog</property>
<property name="program_name">Glade</property>
<property name="logo_icon_name">image-missing</property>
<child internal-child="vbox">
<object class="GtkBox" id="aboutdialog-vbox1">
<property name="can_focus">False</property>
<property name="orientation">vertical</property>
<property name="spacing">2</property>
<child internal-child="action_area">
<object class="GtkButtonBox" id="aboutdialog-action_area1">
<property name="can_focus">False</property>
<property name="layout_style">end</property>
</object>
<packing>
<property name="expand">False</property>
<property name="fill">False</property>
<property name="position">0</property>
</packing>
</child>
<child>
<placeholder/>
</child>
</object>
</child>
</object>
</interface>
最佳答案
如果理解正确，您不希望以编程方式创建对话框，而是希望通过 glade 创建对话框。
通过使用 glade，您必须使用 GtkBuilder .
假设您使用 glade (yesno_dialog.ui) 创建一个简单的是，否对话框:
<?xml version="1.0" encoding="UTF-8"?>
<!-- Generated with glade 3.20.2 -->
<interface>
<requires lib="gtk+" version="3.20"/>
<object class="GtkDialog" id="dialog1">
<property name="can_focus">False</property>
<property name="modal">True</property>
<property name="default_width">275</property>
<property name="default_height">130</property>
<property name="type_hint">dialog</property>
<child internal-child="vbox">
<object class="GtkBox">
<property name="can_focus">False</property>
<property name="orientation">vertical</property>
<property name="spacing">2</property>
<child internal-child="action_area">
<object class="GtkButtonBox">
<property name="can_focus">False</property>
<property name="hexpand">True</property>
<property name="layout_style">spread</property>
<child>
<object class="GtkButton" id="button1">
<property name="label">gtk-yes</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
<property name="use_stock">True</property>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkButton" id="button2">
<property name="label">gtk-no</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
<property name="use_stock">True</property>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">1</property>
</packing>
</child>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkLabel">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="halign">center</property>
<property name="valign">center</property>
<property name="hexpand">True</property>
<property name="vexpand">True</property>
<property name="label" translatable="yes">Are you sure to quit?</property>
</object>
<packing>
<property name="expand">False</property>
<property name="fill">True</property>
<property name="position">1</property>
</packing>
</child>
</object>
</child>
<action-widgets>
<action-widget response="1">button1</action-widget>
<action-widget response="2">button2</action-widget>
</action-widgets>
<child>
<placeholder/>
</child>
</object>
</interface>
应该是这样的:
注意 response_id 为 1 以备后用。
让我们测试一个带有按钮的简单窗口，该按钮将通过其 clicked 触发对话框信号处理程序/回调:
#include <gtk/gtk.h>
void on_button_clicked (GtkButton *button, gpointer user_data) {
int response;
GtkWidget *dialog;
GtkBuilder *builder;
g_return_if_fail (user_data != NULL);
builder = gtk_builder_new_from_file("yesno_dialog.ui");
dialog = GTK_WIDGET(gtk_builder_get_object (builder, "dialog1"));
gtk_window_set_transient_for (GTK_WINDOW(dialog), GTK_WINDOW(user_data));
gtk_widget_show_all(dialog);
response = gtk_dialog_run(GTK_DIALOG(dialog));
gtk_widget_destroy(dialog);
g_object_unref(G_OBJECT(builder));
g_print ("Response is %s\n", response == 1 ? "Yes" : "No");
}
int main(int argc, char *argv[]) {
GtkWidget *button;
GtkWidget *window;
gtk_init(&argc,&argv);
button = gtk_button_new_with_label("Press for dialog");
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_container_add(GTK_CONTAINER(window), button);
g_signal_connect(G_OBJECT(button), "clicked", G_CALLBACK(on_button_clicked), window);
g_signal_connect(G_OBJECT(window), "destroy", G_CALLBACK(gtk_main_quit), NULL);
gtk_widget_show_all(window);
gtk_main();
return 0;
}
当您使用标准响应 ID 以编程方式构建对话时，您可以使用预定义的枚举器来检查响应。使用 glade，即使我们已经定义了 Stock 按钮，我们也必须定义(用户定义的)响应 id，以便 gtk_dialog_run 函数知道用户已经选择了一个响应。
编译:
gcc -o dialog main.c `pkg-config --cflags --libs gtk+-3.0`
应该会产生类似这样的结果:
关于c - 使用 Glade(和 C)的 GTK+ 中消息对话框的信号处理程序，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/48177396/