gtk-listbox -contents在水平线中间显示，listbox不适合窗口大小 [英] gtk-listbox -contents shown in middle of horizontal line, listbox does not fit window size

问题描述

我在gtk
中写了一个listbox的代码
1.列表框的内容显示在水平线的中间。我希望它左对齐。
2.列表框不适合窗口大小
3.列表框位于笔记本标签内。我希望当选择列表框中的项目进行一些处理（某些函数调用）时，当前选项卡显示被隐藏，并且新选项卡显示结果和后退按钮。当按下后退按钮时，它会在2个标签中为2个标签
做2个情况 - 它只是显示之前的标签2中的内容
，它会再次处理，并以原始格式显示列表框中的结果。 p>

我的代码如下所示：

  #include< gtk / gtk。 h取代; 
 #include< glib.h> 
 #include< stdlib.h> 
 
 static void destroy（GtkWidget * widget，gpointer data）
 {
 gtk_main_quit（）; 
 
 
 $ b int main（int argc，char * argv []）
 {
 gtk_init（& argc，& argv）; 
 
 GtkWidget * window = gtk_window_new（GTK_WINDOW_TOPLEVEL）; 
 gtk_window_set_default_size（GTK_WINDOW（window），200，200）; 
 g_signal_connect（window，destroy，G_CALLBACK（destroy），NULL）; 
 
 GtkWidget * notebook = gtk_notebook_new（）; 
 gtk_container_add（GTK_CONTAINER（window），notebook）; 
 
 
 int count; 
 int i; 
 gchar * text; （count = 1; count <= 5; count ++）
 {
 GtkWidget * vbox = gtk_box_new（GTK_ORIENTATION_VERTICAL，0）; 
 
; 
 text = g_strdup_printf（Page％d，count）; 
 GtkWidget * label = gtk_label_new（text）; 
 GtkWidget * scrolledwindow = gtk_scrolled_window_new（NULL，NULL）; 
 gtk_container_add（GTK_CONTAINER（vbox），scrolledwindow）; 
 // GtkWidget * textview = gtk_text_view_new（）; 
 GtkWidget * listbox = gtk_list_box_new（）; 
 for（i = 1; i <100; i ++）
 {
 gchar * name = g_strdup_printf（Label％i，i）; 
 GtkWidget * label = gtk_label_new（name）; 
 gtk_container_add（GTK_CONTAINER（listbox），label）; 
 
 
 gtk_container_add（GTK_CONTAINER（scrolledwindow），listbox）; 
 gtk_container_add（GTK_CONTAINER（vbox），scrolledwindow）; 
 
 gtk_notebook_append_page（GTK_NOTEBOOK（notebook），vbox，label）; 
} 
 
 gtk_widget_show_all（window）; 
 
 gtk_main（）; 
 
返回0; 
 
  

解决方案

回答1和2所有关于对齐和展开属性。

1. 您可以设置展开属性，同时使用 gtk_box_pack _ * 一组函数，例如，
   
   
   

   关于3）太具体了，无法真正理解你的目标。
   您还应该分开问题，以便答案针对每个问题。
   

   I wrote a code for listbox in gtk problems 1. the contents of listbox are shown in middle of horizontal line. I want it to be left aligned. 2. the listbox does not fit the window size 3.the list box is within a notebook tab. I want when the item in the listbox is selected some processing to be done(some function called), the current tab display is hidden and new tab is displayed with the results and a back button. When Back button is pressed it does 2 cases for 2 tabs in 1 tab- it just shows the previous content in tab 2- it does processing again and shows results in list box in original format.

   my code is as follows

   #include <gtk/gtk.h>
   #include <glib.h>
   #include <stdlib.h>
   
   static void destroy(GtkWidget *widget, gpointer data)
   {
     gtk_main_quit();
   }
   
   
   int main(int argc, char *argv[])
   {
     gtk_init(&argc, &argv);
   
     GtkWidget *window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
     gtk_window_set_default_size(GTK_WINDOW(window), 200, 200);
     g_signal_connect(window, "destroy", G_CALLBACK(destroy), NULL);
   
     GtkWidget *notebook = gtk_notebook_new();
     gtk_container_add(GTK_CONTAINER(window), notebook);
   
   
     int count;
     int i;
     gchar *text;
   
     for (count = 1; count <= 5; count++)
       {
         GtkWidget *vbox = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
         text = g_strdup_printf("Page %d", count);
         GtkWidget *label = gtk_label_new(text);
         GtkWidget *scrolledwindow = gtk_scrolled_window_new(NULL, NULL);
         gtk_container_add(GTK_CONTAINER(vbox), scrolledwindow);
         //GtkWidget *textview = gtk_text_view_new();
         GtkWidget *listbox = gtk_list_box_new();
         for (i=1; i<100; i++)
         {
             gchar *name = g_strdup_printf("Label %i", i);
             GtkWidget *label = gtk_label_new(name);
             gtk_container_add(GTK_CONTAINER(listbox), label);
   
    }
         gtk_container_add(GTK_CONTAINER(scrolledwindow), listbox);
         gtk_container_add(GTK_CONTAINER(vbox), scrolledwindow);
   
         gtk_notebook_append_page(GTK_NOTEBOOK(notebook), vbox, label);
       }
   
     gtk_widget_show_all(window);
   
     gtk_main();
   
     return 0;
   }
   

   解决方案

   Answer to 1 and 2 it's all about alignment and expand properties.

   1. You can set expand properties while adding to the container with gtk_box_pack_* set of functions, eg., gtk_box_pack_start.
   2. You can set alignment with gtk_widget_set_halign and gtk_widget_set_valign functions

   Applying these to your code:

   #include <gtk/gtk.h>
   #include <glib.h>
   #include <stdlib.h>
   
   static void destroy(GtkWidget *widget, gpointer data)
   {
     gtk_main_quit();
   }
   
   
   int main(int argc, char *argv[])
   {
     gtk_init(&argc, &argv);
   
     GtkWidget *window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
     gtk_window_set_default_size(GTK_WINDOW(window), 200, 200);
     g_signal_connect(window, "destroy", G_CALLBACK(destroy), NULL);
   
     GtkWidget *notebook = gtk_notebook_new();
     gtk_container_add(GTK_CONTAINER(window), notebook);
   
   
     int count;
     int i;
     gchar *text;
   
     for (count = 1; count <= 5; count++)
     {
         GtkWidget *vbox = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
         text = g_strdup_printf("Page %d", count);
         GtkWidget *label = gtk_label_new(text);
         GtkWidget *scrolledwindow = gtk_scrolled_window_new(NULL, NULL);
         gtk_box_pack_start (GTK_BOX(vbox), scrolledwindow, TRUE, TRUE, 0);
         GtkWidget *listbox = gtk_list_box_new();
         for (i=1; i<100; i++)
         {
             gchar *name = g_strdup_printf("Label %i", i);
             GtkWidget *label = gtk_label_new(name);
             gtk_widget_set_halign (GTK_WIDGET(label), GTK_ALIGN_START);
             gtk_container_add(GTK_CONTAINER(listbox), label);
   
         }
         gtk_container_add(GTK_CONTAINER(scrolledwindow), listbox);
         gtk_notebook_append_page(GTK_NOTEBOOK(notebook), vbox, label);
     }
   
     gtk_widget_show_all(window);
   
     gtk_main();
   
     return 0;
   }
   

   Notice gtk_box_pack_start when adding the scrolled window to the container, it's set to fill and expand. Also check the label halign being set at GTK_ALIGN_START.

   The result should be:

   About 3) it's too specific and could not really understand your goal. You should also separate questions so that the answers are specific to each problem.

   这篇关于gtk-listbox -contents在水平线中间显示，listbox不适合窗口大小的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！