GTK 不呈现所有用户界面

Question

我正在使用 gtk+ 和 c 。我已经创建了菜单栏，现在想附加一个带有一些按钮的 table。我已经编写了所有必要的 API 例程，但是，我面临的问题是，如果我首先创建菜单栏，那么 table 不会呈现为 window，我会先呈现 table在它的位置看不到菜单栏...。我不知道为什么。这是代码

    /* Button Boxes
 *
 * The Button Box widgets are used to arrange buttons with padding.
 */
#include <gtk/gtk.h>


 GtkWidget *window,*button,*container,*menubar,*fileM,*menu,*vbox,*aboutM,*quitM,*bdrM;
 GtkWidget *image,*table,*Fileframe,*framecnt;
bool status=false;

void aboutDialog()
{
    GtkWidget *box;
    box=gtk_message_dialog_new(GTK_WINDOW(window),GTK_DIALOG_DESTROY_WITH_PARENT,GTK_MESSAGE_INFO,GTK_BUTTONS_OK,"EXAMPLE");;
    gtk_dialog_run(GTK_DIALOG(box));
    gtk_widget_destroy(box);

}

void Warning_quit()
{
    GtkWidget *box;
    box=gtk_message_dialog_new(GTK_WINDOW(window),GTK_DIALOG_DESTROY_WITH_PARENT,GTK_MESSAGE_WARNING,GTK_BUTTONS_YES_NO,"Sure want to quit..");
    gtk_dialog_run(GTK_DIALOG(box));
    gtk_widget_destroy(box);
    gtk_main_quit();

}

void toggle_Border()
{
    if(status==false)
    {
        gtk_window_set_decorated(GTK_WINDOW(window),true);
        gtk_menu_item_set_label(GTK_MENU_ITEM(bdrM),"fix");
        status=true;
    }
    else if(status==true)
    {
        gtk_window_set_decorated(GTK_WINDOW(window),false);
        gtk_menu_item_set_label(GTK_MENU_ITEM(bdrM),"move");
        status=false;

    }

}
void initDecoration()
{
    vbox=gtk_vbox_new(false,0);
    menubar=gtk_menu_bar_new();
    fileM=gtk_menu_item_new_with_label("file");
    aboutM=gtk_menu_item_new_with_label("about");
    quitM=gtk_menu_item_new_with_label("quit");
    bdrM=gtk_menu_item_new_with_label("move");
    menu=gtk_menu_new();
    ////////////////////////
    gtk_container_add(GTK_CONTAINER(window),vbox);//attach vbox with window..
    gtk_menu_shell_append(GTK_MENU_SHELL(menubar),fileM);//attach menu into menubar
    gtk_menu_item_set_submenu(GTK_MENU_ITEM(fileM),menu);
    gtk_menu_shell_append(GTK_MENU_SHELL(menu),aboutM);
    gtk_menu_shell_append(GTK_MENU_SHELL(menubar),bdrM);
    gtk_menu_shell_append(GTK_MENU_SHELL(menu),quitM);//attach quit menu with menu..
    gtk_box_pack_start(GTK_BOX(vbox),menubar,0,0,1);//attach menubar with vbox//

    //attach signal intrrupt for menus..
    g_signal_connect(G_OBJECT(aboutM),"activate",G_CALLBACK(aboutDialog),0);//signal for about menu..
    g_signal_connect(G_OBJECT(quitM),"activate",G_CALLBACK(Warning_quit),0);//signal for quit menu..
    g_signal_connect(G_OBJECT(bdrM),"activate",G_CALLBACK(toggle_Border),0);
}

void initTable()
{
    GtkWidget *button;
    gtk_container_add(GTK_CONTAINER(window),table); //table attached to main window..
    button=gtk_button_new_with_label("button");
    table=gtk_table_new(4,4,true); //table created..
    gtk_table_attach_defaults(GTK_TABLE(table),button,0,1,0,1); //attaching frame container to table cell..

}
int main(int argc, char *argv[]) 
{
  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), 250, 200);
  //setup menubar;
  initDecoration();
  initTable();
  g_signal_connect(G_OBJECT(window),"destroy",G_CALLBACK(gtk_main_quit),0);
  gtk_widget_show_all(window);
  gtk_main();

  return 0;
}

Answer 1

问题是您试图将多个子项添加到同一个容器 GtkWindow，而该容器只能容纳一个子项。

您确实创建了一个 vbox，但是在您没有将 GtkTable 添加到 GtkBox 之后，顺便说一句，自 Gtk+ 3.4 以来它已被弃用。

另请注意，您在创建之前将 GtkTable 添加到 window 并且 GtkWindow 会对此抱怨。

所以，您的 initTable 函数应该是：

void initTable()
{
    GtkWidget *button;
    button=gtk_button_new_with_label("button");
    table=gtk_table_new(4,4,true); //table created..
    gtk_table_attach_defaults(GTK_TABLE(table),button,0,1,0,1); //attaching frame container to table cell..

    gtk_box_pack_start(GTK_BOX(vbox),table,0,0,1);//attach menubar with vbox//

}

为了编译我们必须定义true、false和bool（由于包含，不确定您使用的是哪个框架）。

完整的源代码是：

 /* Button Boxes
 *
 * The Button Box widgets are used to arrange buttons with padding.
 */
#include <gtk/gtk.h>

#define true TRUE
#define false FALSE
#define bool gboolean

 GtkWidget *window,*button,*container,*menubar,*fileM,*menu,*vbox,*aboutM,*quitM,*bdrM;
 GtkWidget *image,*table,*Fileframe,*framecnt;
bool status=false;

void aboutDialog()
{
    GtkWidget *box;
    box=gtk_message_dialog_new(GTK_WINDOW(window),GTK_DIALOG_DESTROY_WITH_PARENT,GTK_MESSAGE_INFO,GTK_BUTTONS_OK,"EXAMPLE");;
    gtk_dialog_run(GTK_DIALOG(box));
    gtk_widget_destroy(box);

}

void Warning_quit()
{
    GtkWidget *box;
    box=gtk_message_dialog_new(GTK_WINDOW(window),GTK_DIALOG_DESTROY_WITH_PARENT,GTK_MESSAGE_WARNING,GTK_BUTTONS_YES_NO,"Sure want to quit..");
    gtk_dialog_run(GTK_DIALOG(box));
    gtk_widget_destroy(box);
    gtk_main_quit();

}

void toggle_Border()
{
    if(status==false)
    {
        gtk_window_set_decorated(GTK_WINDOW(window),true);
        gtk_menu_item_set_label(GTK_MENU_ITEM(bdrM),"fix");
        status=true;
    }
    else if(status==true)
    {
        gtk_window_set_decorated(GTK_WINDOW(window),false);
        gtk_menu_item_set_label(GTK_MENU_ITEM(bdrM),"move");
        status=false;

    }

}
void initDecoration()
{
    vbox=gtk_vbox_new(false,0);
    menubar=gtk_menu_bar_new();
    fileM=gtk_menu_item_new_with_label("file");
    aboutM=gtk_menu_item_new_with_label("about");
    quitM=gtk_menu_item_new_with_label("quit");
    bdrM=gtk_menu_item_new_with_label("move");
    menu=gtk_menu_new();
    ////////////////////////
    gtk_container_add(GTK_CONTAINER(window),vbox);//attach vbox with window..
    gtk_menu_shell_append(GTK_MENU_SHELL(menubar),fileM);//attach menu into menubar
    gtk_menu_item_set_submenu(GTK_MENU_ITEM(fileM),menu);
    gtk_menu_shell_append(GTK_MENU_SHELL(menu),aboutM);
    gtk_menu_shell_append(GTK_MENU_SHELL(menubar),bdrM);
    gtk_menu_shell_append(GTK_MENU_SHELL(menu),quitM);//attach quit menu with menu..
    gtk_box_pack_start(GTK_BOX(vbox),menubar,0,0,1);//attach menubar with vbox//

    //attach signal intrrupt for menus..
    g_signal_connect(G_OBJECT(aboutM),"activate",G_CALLBACK(aboutDialog),0);//signal for about menu..
    g_signal_connect(G_OBJECT(quitM),"activate",G_CALLBACK(Warning_quit),0);//signal for quit menu..
    g_signal_connect(G_OBJECT(bdrM),"activate",G_CALLBACK(toggle_Border),0);
}

void initTable()
{
    GtkWidget *button;
    button=gtk_button_new_with_label("button");
    table=gtk_table_new(4,4,true); //table created..
    gtk_table_attach_defaults(GTK_TABLE(table),button,0,1,0,1); //attaching frame container to table cell..

    gtk_box_pack_start(GTK_BOX(vbox),table,0,0,1);//attach menubar with vbox//

}
int main(int argc, char *argv[]) 
{
  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), 250, 200);
  //setup menubar;
  initDecoration();
  initTable();
  g_signal_connect(G_OBJECT(window),"destroy",G_CALLBACK(gtk_main_quit),0);
  gtk_widget_show_all(window);
  gtk_main();

  return 0;
}

编译：

gcc -o main main.c `pkg-config --cflags --libs gtk+-3.0`

GTK 不呈现所有用户界面

GTK not rendering all user interfaces

c

gtk

gtk3