C++ 按代码在glade中设置树存储模型-GTK glade TreeStore C++;
我读过Glade的一些手册,我创建了一个GUI,其中有一个树视图,我想通过代码填充它。glade文件是:C++ 按代码在glade中设置树存储模型-GTK glade TreeStore C++;,c++,gtk,glade,C++,Gtk,Glade,我读过Glade的一些手册,我创建了一个GUI,其中有一个树视图,我想通过代码填充它。glade文件是: <?xml version="1.0" encoding="UTF-8"?> <interface> <!-- interface-requires gtk+ 3.0 --> <!-- interface-naming-policy toplevel-contextual --> <object class="GtkWindo
<?xml version="1.0" encoding="UTF-8"?>
<interface>
<!-- interface-requires gtk+ 3.0 -->
<!-- interface-naming-policy toplevel-contextual -->
<object class="GtkWindow" id="tree_window">
<property name="can_focus">False</property>
<property name="border_width">3</property>
<property name="title" translatable="yes">Tree Viewer</property>
<property name="default_width">400</property>
<property name="default_height">600</property>
<signal name="destroy" handler="gtk_main_quit" swapped="no"/>
<child>
<object class="GtkVBox" id="vbox1">
<property name="visible">True</property>
<property name="can_focus">False</property>
<child>
<object class="GtkTreeView" id="treeview1">
<property name="visible">True</property>
<property name="can_focus">True</property>
<child>
<object class="GtkTreeViewColumn" id="aColumn">
<property name="title" translatable="yes">A</property>
</object>
</child>
<child>
<object class="GtkTreeViewColumn" id="bColumn">
<property name="title" translatable="yes">B</property>
</object>
</child>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">0</property>
</packing>
</child>
</object>
</child>
</object>
</interface>
假的
3.
树查看器
400
600
真的
假的
真的
真的
A.
B
真的
真的
0
因此,我们的想法是用我在下面的代码中定义的GtkTreeStore填充“TreeView W1”:
#include <gtk/gtk.h>
enum{
A_COL=0,
B_COL
};
GtkTreeModel * fill_gtk_tree_store_from_xml_file()
{
GtkTreeStore * t_model;
t_model=gtk_tree_store_new(2,G_TYPE_UINT,G_TYPE_UINT);
GtkTreeIter toplevel,childlevel;
gtk_tree_store_append(t_model,&toplevel,NULL);
gtk_tree_store_append(t_model,&toplevel,NULL);
gtk_tree_store_append(t_model,&toplevel,NULL);
gtk_tree_store_set(t_model,&toplevel,A_COL,(guint)12,B_COL,(guint)14,-1);
gtk_tree_store_append(t_model, &childlevel, &toplevel);
gtk_tree_store_set(t_model,&childlevel,0,(guint)20,
1,(guint)22,-1);
gtk_tree_store_append(t_model, &childlevel, &toplevel);
return GTK_TREE_MODEL (t_model);
}
#include <gtk/gtk.h>
#include <stdlib.h>
int launchGUI(GtkBuilder *builder,GError *error=NULL)
{
GtkWidget *ventanaPrincipal;
if( ! gtk_builder_add_from_file( builder,"treeStore.glade", &error ) )
{
g_warning( "%s", error->message );
g_free( error );
return( 1 );
}
ventanaPrincipal = GTK_WIDGET(gtk_builder_get_object(builder, "tree_window"));
GtkTreeModel *model;
GtkWidget *view;
model=fill_gtk_tree_store_from_xml_file();
view=GTK_WIDGET(gtk_builder_get_object(builder, "treeview1"));
gtk_tree_view_set_model (GTK_TREE_VIEW (view), model);
gtk_tree_selection_set_mode(gtk_tree_view_get_selection(GTK_TREE_VIEW(view)),
GTK_SELECTION_NONE);
gtk_signal_connect(GTK_OBJECT(ventanaPrincipal), "destroy",
G_CALLBACK(gtk_main_quit), NULL);
gtk_widget_show_all(ventanaPrincipal);
gtk_main();
return 0;
}
int main(int argc,char **argv)
{
GtkBuilder *gtkBuilder;
GError *error = NULL;
gtk_init(&argc, &argv);
gtkBuilder= gtk_builder_new();
launchGUI(gtkBuilder,error);
return EXIT_SUCCESS;
}
#包括
枚举{
A_COL=0,
B_COL
};
GtkTreeModel*从xml文件()填充gtk树存储
{
GtkTreeStore*t_模型;
t_model=gtk_tree_store_new(2,G_类型单元,G_类型单元);
GtkTreeIter顶级、儿童级;
gtk_树_存储_附加(t_模型和顶级,空);
gtk_树_存储_附加(t_模型和顶级,空);
gtk_树_存储_附加(t_模型和顶级,空);
gtk_树_存储_集(t_模型和顶层,A_列,(guint)12,B_列,(guint)14,-1);
gtk_树_存储_附加(t_模型、子级和顶级);
gtk_树_存储_集(t_模型和儿童级,0,(吉尼特)20,
1,(吉尼特)22,-1);
gtk_树_存储_附加(t_模型、子级和顶级);
返回GTK_树_模型(t_模型);
}
#包括
#包括
int launchGUI(GtkBuilder*builder,GError*error=NULL)
{
GtkWidget*ventanaPrincipal;
如果(!gtk_builder_从_文件添加_(builder,“treeStore.glade”,&error))
{
g_警告(“%s”,错误->消息);
g_自由(错误);
申报表(1);
}
ventanaPrincipal=GTK_小部件(GTK_生成器_获取_对象(生成器,“树窗口”);
GTKTREE模型*模型;
GtkWidget*视图;
model=fill_gtk_tree_store_from_xml_file();
视图=GTK_小部件(GTK_生成器_get_对象(生成器,“TreeView”));
gtk树视图集模型(gtk树视图(视图),模型);
gtk_树_选择_设置_模式(gtk_树_视图_获取_选择(gtk_树_视图(视图)),
GTK_选择_无);
gtk_信号连接(gtk_对象(ventanaPrincipal),“销毁”,
G_回调(gtk_main_quit),NULL);
gtk_widget_show_all(ventanaPrincipal);
gtk_main();
返回0;
}
int main(int argc,字符**argv)
{
GtkBuilder*GtkBuilder;
GError*error=NULL;
gtk_init(&argc,&argv);
gtkBuilder=gtk_builder_new();
启动GUI(gtkBuilder,错误);
返回退出成功;
}
我尝试了不同的方法,使用枚举,而不是使用枚举。。。空行显示为空(确定),但不应为空的行也显示为空。当我运行代码时,会发生以下情况:
我不知道我做错了什么,有人能帮我吗?您的代码有许多构造方面。我将列出那些引起我特别注意的问题
<强>如果您使用GTK+,使用纯C而不是<强> < /P>,请不要称之为C++。 你用
c++
标记了你的问题。但是,您不使用gtkmm
,而是使用gtk+
。因此,您不应该散布与标准c不兼容的c++
特性
与代码相关,您不应该指定默认函数参数。该特性不是c编程语言的一部分,它会使处理代码的程序员感到困惑
在需要的地方声明变量并保持函数原型干净
不要不必要地将变量传递给实际上只属于函数本身逻辑范围的函数
例如函数
int launchGUI(GtkBuilder *builder,GError *error=NULL)
仅在本地使用builder
和error
,因此不应将它们作为函数参数实现
此外,在初始化用户界面的函数之外,您很少需要GtkBuilder
实例。因此,不要用不必要的局部变量定义来搞乱函数
查看参考手册,不仅了解功能说明,还了解对库功能的概念理解
不要在GError
资源上应用g_free
。像GError
这样的结构不一定是扁平的。而是使用有效的函数。关于GError
您应该使用g\u error\u free
研究GtkTreeModel
小部件的概念概述以及如何填充它。如果你不这样做或研究类似的描述,我看到困难的时刻会降临到你身上
不要使用不推荐的功能
检查代码中不推荐的功能,并将其替换为库的新版本
例如,不要在依赖于GTK+-3.0
的程序中使用GTK\u对象(我从ui定义文件得出结论)。在代码中,您几乎总是可以将gtk_对象
替换为g_对象
思考应该在ui定义文件中定义什么,以及应该保留在源文件中的内容
GtkTreeView
至少在我看来是gtk+中最复杂的小部件之一。设置小部件的模型并创建一些列是不够的
此时,必须使用单元渲染器打包列,并将数据存储/模型中的列链接到特定渲染器的特定属性。只有这样,数据存储的内容才会直接或间接显示在屏幕上
所说的,你应该考虑树视图的哪个部分应该用<代码> GtkBuilder < /代码>的方法来实例化,代码中应该定义什么。关于您的代码,您必须要么获取两列,要么分别使用
gtk\u builder\u get\u object
获取树视图,要么在glade中实现整个树视图
为了向您展示一个我想您想要实现的最低限度的工作示例,我决定删除
#include <gtk/gtk.h>
#include <stdlib.h>
enum
{
A_COL = 0,
B_COL,
COL_NUMBER
};
gchar *title[] = { "Column A", "Column B" };
void
fill_gtk_tree_store (GtkTreeView * view)
{
GtkTreeStore *model;
GtkTreeIter toplevel, childlevel;
GtkTreeViewColumn *column;
GtkTreeSelection *selection;
GtkCellRenderer *renderer;
guint i;
model = gtk_tree_store_new (COL_NUMBER, G_TYPE_UINT, G_TYPE_UINT);
gtk_tree_store_append (model, &toplevel, NULL);
gtk_tree_store_append (model, &toplevel, NULL);
gtk_tree_store_append (model, &toplevel, NULL);
gtk_tree_store_set (model, &toplevel, A_COL, 12, B_COL, 14, -1);
gtk_tree_store_append (model, &childlevel, &toplevel);
gtk_tree_store_set (model, &childlevel, A_COL, 20, B_COL, 22, -1);
gtk_tree_store_append (model, &childlevel, &toplevel);
gtk_tree_view_set_model (view, GTK_TREE_MODEL (model));
selection = gtk_tree_view_get_selection(view);
gtk_tree_selection_set_mode (selection, GTK_SELECTION_NONE);
for (i = 0; i < COL_NUMBER; i++) {
renderer = gtk_cell_renderer_text_new ();
column =
gtk_tree_view_column_new_with_attributes (title[i], renderer,
"text", i, NULL);
gtk_tree_view_append_column (view, column);
}
}
void
launchGUI ()
{
GtkWidget *ventanaPrincipal;
GtkBuilder *builder;
GError *error = NULL;
GtkTreeView *view;
builder = gtk_builder_new ();
gtk_builder_add_from_file (builder, "treeStoreMod.glade", &error);
if (error != NULL) {
g_warning ("%s", error->message);
g_error_free (error);
exit(1);
}
ventanaPrincipal =
GTK_WIDGET (gtk_builder_get_object (builder, "tree_window"));
view = GTK_TREE_VIEW (gtk_builder_get_object (builder, "treeview1"));
g_object_unref(builder);
fill_gtk_tree_store (view);
g_signal_connect (G_OBJECT (ventanaPrincipal),
"destroy", G_CALLBACK (gtk_main_quit), NULL);
gtk_widget_show_all (ventanaPrincipal);
gtk_main ();
}
int
main (int argc, char **argv)
{
gtk_init (&argc, &argv);
launchGUI ();
return 0;
}
<?xml version="1.0" encoding="UTF-8"?>
<interface>
<!-- interface-requires gtk+ 3.0 -->
<object class="GtkWindow" id="tree_window">
<property name="can_focus">False</property>
<property name="border_width">3</property>
<property name="title" translatable="yes">Tree Viewer</property>
<property name="default_width">400</property>
<property name="default_height">600</property>
<signal name="destroy" handler="gtk_main_quit" swapped="no"/>
<child>
<object class="GtkVBox" id="vbox1">
<property name="visible">True</property>
<property name="can_focus">False</property>
<child>
<object class="GtkTreeView" id="treeview1">
<property name="visible">True</property>
<property name="can_focus">True</property>
<child internal-child="selection">
<object class="GtkTreeSelection" id="treeview-selection1"/>
</child>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">0</property>
</packing>
</child>
</object>
</child>
</object>
</interface>