gtk dialog

最新推荐文章于 2023-04-18 18:09:08 发布

mcgrady_tracy

最新推荐文章于 2023-04-18 18:09:08 发布

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分类专栏：基础

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1. message dialog
message dialog有四种类型，分别是info、warning、question、error，代码示例如下：

#include <gtk/gtk.h>

void show_info(GtkWidget *widget, gpointer window)
{
	GtkWidget *dialog;
	dialog = gtk_message_dialog_new(GTK_WINDOW(window),
				GTK_DIALOG_DESTROY_WITH_PARENT,
				GTK_MESSAGE_INFO,
				GTK_BUTTONS_OK,
				"Download Completed");
	gtk_window_set_title(GTK_WINDOW(dialog), "Information");
	gtk_dialog_run(GTK_DIALOG(dialog));
	gtk_widget_destroy(dialog);
}

void show_error(GtkWidget *widget, gpointer window)
{
	GtkWidget *dialog;
	dialog = gtk_message_dialog_new(GTK_WINDOW(window),
				GTK_DIALOG_DESTROY_WITH_PARENT,
				GTK_MESSAGE_ERROR,
				GTK_BUTTONS_OK,
				"Error loading file");
	gtk_window_set_title(GTK_WINDOW(dialog), "Error");
	gtk_dialog_run(GTK_DIALOG(dialog));
	gtk_widget_destroy(dialog);
}

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);
}

void show_warning(GtkWidget *widget, gpointer window)
{
	GtkWidget *dialog;
	dialog = gtk_message_dialog_new(GTK_WINDOW(window),
				GTK_DIALOG_DESTROY_WITH_PARENT,
				GTK_MESSAGE_WARNING,
				GTK_BUTTONS_OK,
				"Unallowed operation");
	gtk_window_set_title(GTK_WINDOW(dialog), "Warning");
	gtk_dialog_run(GTK_DIALOG(dialog));
	gtk_widget_destroy(dialog);
}

int main(int argc, char *argv[])
{
	GtkWidget *window;
	GtkWidget *table;
	
	GtkWidget *info;
	GtkWidget *warn;
	GtkWidget *que;
	GtkWidget *err;

	gtk_init(&argc, &argv);

	window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
	gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
	gtk_window_set_default_size(GTK_WINDOW(window), 220, 150);
	gtk_window_set_title(GTK_WINDOW(window), "Message dialogs");

	table = gtk_table_new(2, 2, TRUE);
	gtk_table_set_row_spacings(GTK_TABLE(table), 2);
	gtk_table_set_col_spacings(GTK_TABLE(table), 2);

	info = gtk_button_new_with_label("Info");
	warn = gtk_button_new_with_label("Warning");
	que = gtk_button_new_with_label("Question");
	err = gtk_button_new_with_label("Error");

	gtk_table_attach(GTK_TABLE(table), info, 0, 1, 0, 1,
		GTK_FILL, GTK_FILL, 3, 3);
	gtk_table_attach(GTK_TABLE(table), warn, 1, 2, 0, 1,
		GTK_FILL, GTK_FILL, 3, 3);
	gtk_table_attach(GTK_TABLE(table), que, 0, 1, 1, 2,
		GTK_FILL, GTK_FILL, 3, 3);
	gtk_table_attach(GTK_TABLE(table), err, 1, 2, 1, 2,
		GTK_FILL, GTK_FILL, 3, 3);

	gtk_container_add(GTK_CONTAINER(window), table);
	gtk_container_set_border_width(GTK_CONTAINER(window), 15);

	g_signal_connect(G_OBJECT(info), "clicked",
		G_CALLBACK(show_info), (gpointer) window);

	g_signal_connect(G_OBJECT(warn), "clicked",
		G_CALLBACK(show_warning), (gpointer) window);

	g_signal_connect(G_OBJECT(que), "clicked",
		G_CALLBACK(show_question), (gpointer) window);

	g_signal_connect(G_OBJECT(err), "clicked",
		G_CALLBACK(show_error), (gpointer) window);

	g_signal_connect(G_OBJECT(window), "destroy",
		G_CALLBACK(gtk_main_quit), G_OBJECT(window));

	gtk_widget_show_all(window);

	gtk_main();

	return 0;
}

message dialog使用gtk_message_dialog_new()函数去创建，而gtk_dialog_run()函数用来显示一个对话框，最后还需要调用gtk_widget_destroy()函数来销毁对话框。

2. about dialog
代码示例如下：

#include <gtk/gtk.h>

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);
}

int main(int argc, char *argv[])
{
	GtkWidget *window;
	GtkWidget *about;
	GdkPixbuf *battery;

	gtk_init(&argc, &argv);

	window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
	gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
	gtk_window_set_default_size(GTK_WINDOW(window), 220, 150);
	gtk_window_set_title(GTK_WINDOW(window), "Battery");

	gtk_container_set_border_width(GTK_CONTAINER(window), 15);
	gtk_widget_add_events(window, GDK_BUTTON_PRESS_MASK);

	g_signal_connect(G_OBJECT(window), "button-press-event",
		G_CALLBACK(show_about), (gpointer) window);

	g_signal_connect(G_OBJECT(window), "destroy",
		G_CALLBACK(gtk_main_quit), G_OBJECT(window));

	gtk_widget_show_all(window);

	gtk_main();

	return 0;
}

3. font selection dialog
代码如下：

#include <gtk/gtk.h>

void select_font(GtkWidget *widget, gpointer label)
{
	GtkResponseType result;

	GtkWidget *dialog = gtk_font_selection_dialog_new("Select Font");

	result = gtk_dialog_run(GTK_DIALOG(dialog));

	if (result == GTK_RESPONSE_OK || result == GTK_RESPONSE_APPLY) {
		PangoFontDescription *font_desc;
		gchar *fontname = gtk_font_selection_dialog_get_font_name(
					GTK_FONT_SELECTION_DIALOG(dialog));

		font_desc = pango_font_description_from_string(fontname);

		gtk_widget_modify_font(GTK_WIDGET(label), font_desc);

		g_free(fontname);
	}

	gtk_widget_destroy(dialog);
}

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

	GtkWidget *toolbar;
	GtkToolItem *font;

	gtk_init(&argc, &argv);

	window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
	gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
	gtk_window_set_default_size(GTK_WINDOW(window), 280, 200);
	gtk_window_set_title(GTK_WINDOW(window), "Font Selection Dialog");

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

	toolbar = gtk_toolbar_new();
	gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_ICONS);

	gtk_container_set_border_width(GTK_CONTAINER(toolbar), 2);

	font = gtk_tool_button_new_from_stock(GTK_STOCK_SELECT_FONT);
	gtk_toolbar_insert(GTK_TOOLBAR(toolbar), font, -1);

	gtk_box_pack_start(GTK_BOX(vbox), toolbar, FALSE, FALSE, 5);

	label = gtk_label_new("ZetCode");
	gtk_label_set_justify(GTK_LABEL(label), GTK_JUSTIFY_CENTER);
	gtk_box_pack_start(GTK_BOX(vbox), label, TRUE, FALSE, 5);

	g_signal_connect(G_OBJECT(font), "clicked",
		G_CALLBACK(select_font), label);

	g_signal_connect(G_OBJECT(window), "destroy",
		G_CALLBACK(gtk_main_quit), NULL);

	gtk_widget_show_all(window);

	gtk_main();

	return 0;
}

4. color selection dialog
代码如下：

#include <gtk/gtk.h>

void select_font(GtkWidget *widget, gpointer label)
{
	GtkResponseType result;
	GtkColorSelection *colorsel;

	GtkWidget *dialog = gtk_color_selection_dialog_new("Font Color");

	result = gtk_dialog_run(GTK_DIALOG(dialog));

	if (result == GTK_RESPONSE_OK) {
		GdkColor color;

		colorsel = GTK_COLOR_SELECTION(
			GTK_COLOR_SELECTION_DIALOG(dialog)->colorsel);
		gtk_color_selection_get_current_color(colorsel, &color);

		gtk_widget_modify_fg(GTK_WIDGET(label),
					GTK_STATE_NORMAL,
					&color);
	}

	gtk_widget_destroy(dialog);
}

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

	GtkWidget *toolbar;
	GtkToolItem *font;

	gtk_init(&argc, &argv);

	window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
	gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
	gtk_window_set_default_size(GTK_WINDOW(window), 280, 200);
	gtk_window_set_title(GTK_WINDOW(window), "Color Selection Dialog");

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

	toolbar = gtk_toolbar_new();
	gtk_toolbar_set_style(GTK_TOOLBAR(toolbar), GTK_TOOLBAR_ICONS);

	gtk_container_set_border_width(GTK_CONTAINER(toolbar), 2);

	font = gtk_tool_button_new_from_stock(GTK_STOCK_SELECT_COLOR);
	gtk_toolbar_insert(GTK_TOOLBAR(toolbar), font, -1);

	gtk_box_pack_start(GTK_BOX(vbox), toolbar, FALSE, FALSE, 5);

	label = gtk_label_new("ZetCode");
	gtk_label_set_justify(GTK_LABEL(label), GTK_JUSTIFY_CENTER);
	gtk_box_pack_start(GTK_BOX(vbox), label, TRUE, FALSE, 5);

	g_signal_connect(G_OBJECT(font), "clicked",
		G_CALLBACK(select_font), label);

	g_signal_connect(G_OBJECT(window), "destroy",
		G_CALLBACK(gtk_main_quit), NULL);

	gtk_widget_show_all(window);

	gtk_main();

	return 0;
}

参考：http://zetcode.com/gui/gtk2/gtkdialogs/