我正在使用Opensuse 13.1 Linux Os。我是gtk2和c的新手。我正在尝试创建一个应用程序,该应用程序可以将按钮放置在根据用户键入的值附加的表上。我的程序代码如下]
#include <stdlib.h>
#include <gtk/gtk.h>
typedef struct {
GtkWidget *value1, *value2, *value3, *value4;
} entrygrouped;
guint ival1, ival2, ival3, ival4;
void button_clicked(entrygrouped *widget)
{
const gchar *value1, *value2, *value3, *value4;
value1 = gtk_entry_get_text (GTK_ENTRY(widget->value1));
value2 = gtk_entry_get_text (GTK_ENTRY(widget->value2));
value3 = gtk_entry_get_text (GTK_ENTRY(widget->value3));
value4 = gtk_entry_get_text (GTK_ENTRY(widget->value4));
ival1 = (guint)atoi(value1);
ival2 = (guint)atoi(value2);
ival3 = (guint)atoi(value3);
ival4 = (guint)atoi(value4);
g_print("ENTRY VALUES = %s %s %s %s\n", value1, value2, value3, value4);
g_print("ENTRY NUMS = %d %d %d %d\n", ival1, ival2, ival3, ival4);
}
int main (int argc, char *args[])
{
GtkWidget *window, *vbox, *uptable, *downtable, *label;
GtkWidget *button, *button2;
gtk_init(&argc, &args);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_get_resizable(GTK_WINDOW(window));
entrygrouped *eg;
eg = g_slice_new(entrygrouped);
vbox = gtk_vbox_new(FALSE, 2);
uptable = gtk_table_new (3, 4, FALSE);
downtable = gtk_table_new (3, 3, TRUE);
label = gtk_label_new (" Enter the values to position the widget ");
eg->value1 = gtk_entry_new();
eg->value2 = gtk_entry_new();
eg->value3 = gtk_entry_new();
eg->value4 = gtk_entry_new();
button = gtk_button_new_with_label ("Submit");
button2 = gtk_button_new_with_label("BUTTON");
gtk_table_attach_defaults (GTK_TABLE(uptable), label, 0, 3, 0, 1);
gtk_table_attach_defaults (GTK_TABLE(uptable), eg->value1, 0, 1, 1, 2);
gtk_table_attach_defaults (GTK_TABLE(uptable), eg->value2, 1, 2, 1, 2);
gtk_table_attach_defaults (GTK_TABLE(uptable), eg->value3, 0, 1, 2, 3);
gtk_table_attach_defaults (GTK_TABLE(uptable), eg->value4, 1, 2, 2, 3);
gtk_table_attach_defaults (GTK_TABLE(uptable), button, 1, 2, 3, 4);
gtk_widget_queue_draw(GTK_WIDGET(window));
gtk_table_attach_defaults (GTK_TABLE(downtable), button2, ival1, ival2,
ival3, ival4);
gtk_box_pack_start(GTK_BOX(vbox), uptable, 0, 0, 0);
gtk_box_pack_start(GTK_BOX(vbox), downtable, 0, 0, 0);
g_signal_connect_swapped(G_OBJECT(button), "clicked",
G_CALLBACK(button_clicked), eg);
g_signal_connect_swapped(G_OBJECT(window), "destroy",
G_CALLBACK(gtk_main_quit), NULL);
gtk_container_add (GTK_CONTAINER(window), vbox);
gtk_widget_show_all(window);
gtk_main();
return 0;
}
现在,每当我从终端打开我的应用程序并输入一些值并单击提交按钮时,值就会打印在终端上,但是问题是窗口没有用新分配的值绘制button2。我不知道任何可以刷新或重绘整个窗口的功能,尽管我尝试过
while (gtk_events_pending())
gtk_main_iteration();
在button2表附件上方,我仍然没有执行任何操作。我是否需要另一个回调函数来调整窗口大小?请帮助我解决这个问题。
编辑:如果我的问题不清楚,我想以图形方式显示它,如下所示
----------------------------
| a.out _ [ ] x |
---------------------------- before entering the
| -------------------------- | values
|| | ||
| -------------------------- |
|| | ||
| -------------------------- |
| ________ |
| | Submit ||
| -------- |
----------------------------
----------------------------
| a.out _ [ ] x |
---------------------------- after entering the
| -------------------------- | values
|| 0 | 1 ||
| -------------------------- | button2 widget should be
|| 0 | 1 || redrawn according to the
| -------------------------- | values entered and window
| ________ | widget should be updated
| | Submit ||
| -------- |
| _________ |
| | Button | |
| --------- |
----------------------------
我正在使用Opensuse 13.1 Linux Os。我是gtk2和c的新手。我正在尝试创建一个应用程序,该应用程序可以将按钮放置在根据用户键入的值附加的表上。我的程序代码...
您从未更改button2
的标签。
您应该在gtk_button_set_label上有一些回调调用button2
;如果要调整窗口小部件的大小,则可能需要在容器上发送size-request信号和/或size-allocate和/或check-resize信号。另请参见this线程。
经过大量阅读和沮丧之后,我终于能够解决我的问题,我的应用程序的目的是了解表附件的工作方式。