#include <gtk/gtk.h> typedef struct _ProgressData {GtkWidget *window;GtkWidget *pbar;int timer;gboolean activity_mode;} ProgressData;/* 更新进度条，这样就能够看到进度条的移动 */gint progress_timeout( gpointer data ){ProgressData *pdata = (ProgressData *)data;gdouble new_val;if (pdata->activity_mode)gtk_progress_bar_pulse (GTK_PROGRESS_BAR (pdata->pbar));else{/* 使用在调整对象中设置的取值范围计算进度条的值 */new_val = gtk_progress_bar_get_fraction (GTK_PROGRESS_BAR(pdata->pbar)) + 0.01;if (new_val > 1.0)new_val = 0.0;/* 设置进度条的新值 */gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (pdata->pbar),new_val);}/* 这是一个timeout函数，返回 TRUE，这样它就能够继续被调用 */return TRUE;}/* 回调函数，切换在进度条你的滑槽上的文本显示 */void toggle_show_text( GtkWidget *widget, ProgressData *pdata ){const gchar *text;text = gtk_progress_bar_get_text (GTK_PROGRESS_BAR (pdata->pbar));if (text && *text)gtk_progress_bar_set_text (GTK_PROGRESS_BAR (pdata->pbar), "");elsegtk_progress_bar_set_text (GTK_PROGRESS_BAR (pdata->pbar), "some text");}/* 回调函数，切换进度条的活动模式 */void toggle_activity_mode( GtkWidget *widget, ProgressData *pdata ){pdata->activity_mode = !pdata->activity_mode;if (pdata->activity_mode)gtk_progress_bar_pulse (GTK_PROGRESS_BAR (pdata->pbar));elsegtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (pdata->pbar), 0.0);}/* 回调函数，切换进度条的移动方向 */void toggle_orientation( GtkWidget *widget, ProgressData *pdata ){switch (gtk_progress_bar_get_orientation (GTK_PROGRESS_BAR(pdata->pbar))) {case GTK_PROGRESS_LEFT_TO_RIGHT:gtk_progress_bar_set_orientation (GTK_PROGRESS_BAR (pdata->pbar),GTK_PROGRESS_RIGHT_TO_LEFT);break;case GTK_PROGRESS_RIGHT_TO_LEFT:gtk_progress_bar_set_orientation (GTK_PROGRESS_BAR (pdata->pbar),GTK_PROGRESS_LEFT_TO_RIGHT);break;default:break;// 什么也不做}}/* 清除分配的内存，删除定时器(timer) */void destroy_progress( GtkWidget *widget, ProgressData *pdata){gtk_timeout_remove (pdata->timer);pdata->timer = 0;pdata->window = NULL;g_free (pdata);gtk_main_quit ();}int main( int argc, char *argv[]){ProgressData *pdata;GtkWidget *align;GtkWidget *separator;GtkWidget *table;GtkWidget *button;GtkWidget *check;GtkWidget *vbox;gtk_init (&argc, &argv);/* 为传递到回调函数中的数据分配内存 */pdata = g_malloc (sizeof (ProgressData));pdata->window = gtk_window_new (GTK_WINDOW_TOPLEVEL);gtk_window_set_resizable (GTK_WINDOW (pdata->window), TRUE);g_signal_connect (G_OBJECT (pdata->window), "destroy",G_CALLBACK (destroy_progress),pdata);gtk_window_set_title (GTK_WINDOW (pdata->window),"GtkProgressBar");gtk_container_set_border_width (GTK_CONTAINER (pdata->window), 0);vbox = gtk_vbox_new (FALSE, 5);gtk_container_set_border_width (GTK_CONTAINER (vbox), 10);gtk_container_add (GTK_CONTAINER (pdata->window), vbox);gtk_widget_show (vbox);/* 创建一个居中对齐的对象 */align = gtk_alignment_new (0.5, 0.5, 0, 0);gtk_box_pack_start (GTK_BOX (vbox), align, FALSE, FALSE, 5);gtk_widget_show (align);/* 创建进度条 */pdata->pbar = gtk_progress_bar_new ();gtk_container_add (GTK_CONTAINER (align), pdata->pbar);gtk_widget_show (pdata->pbar);/* 加一个定时器(timer)，以更新进度条的值 */pdata->timer = gtk_timeout_add (100, progress_timeout, pdata);separator = gtk_hseparator_new ();gtk_box_pack_start (GTK_BOX (vbox), separator, FALSE, FALSE, 0);gtk_widget_show (separator);/* 行数、列数、同质性(homogeneous) */table = gtk_table_new (2, 2, FALSE);gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, TRUE, 0);gtk_widget_show (table);/* 添加一个复选按钮，以选择是否显示在滑槽里的文本 */check = gtk_check_button_new_with_label ("Show text");gtk_table_attach (GTK_TABLE (table), check, 0, 1, 0, 1,GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL,5, 5);g_signal_connect (G_OBJECT (check), "clicked",G_CALLBACK (toggle_show_text),pdata);gtk_widget_show (check);/* 添加一个复选按钮，切换活动状态 */check = gtk_check_button_new_with_label ("Activity mode");gtk_table_attach (GTK_TABLE (table), check, 0, 1, 1, 2,GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL,5, 5);g_signal_connect (G_OBJECT (check), "clicked",G_CALLBACK (toggle_activity_mode),pdata);gtk_widget_show (check);/* 添加一个复选按钮，切换移动方向 */check = gtk_check_button_new_with_label ("Right to Left");gtk_table_attach (GTK_TABLE (table), check, 0, 1, 2, 3,GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL,5, 5);g_signal_connect (G_OBJECT (check), "clicked",G_CALLBACK (toggle_orientation),pdata);gtk_widget_show (check);/* 添加一个按钮，用来退出应用程序 */button = gtk_button_new_with_label ("close");g_signal_connect_swapped (G_OBJECT (button), "clicked",G_CALLBACK (gtk_widget_destroy),pdata->window);gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);/* 将按钮设置为能缺省的构件 */GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);/* 将缺省焦点设置到这个按钮上，使之成为缺省按钮，只要按回车键 * 就相当于点击了这个按钮 *///译者注： 能缺省的构件在获取焦点后成为缺省构件,用户按方向键等可以切换焦点。gtk_widget_grab_default (button);gtk_widget_show (button);gtk_widget_show (pdata->window);gtk_main ();return 0;}
# Target, compiler and objects.EXEC = testCC = gccOBJ = main.o# Use for compile.CFLAGS = `pkg-config --cflags gtk+-2.0 --cflags glib-2.0`# Use for link.CLIBS = `pkg-config --libs gtk+-2.0 --cflags glib-2.0`$(EXEC):$(OBJ)$(CC) -o $@ $^ $(CLIBS)main.o:main.c$(CC) -c $< $(CFLAGS)clean:rm $(EXEC) * .o
