(GtkTest.exe:15164): Gtk-CRITICAL **: gtk_list_store_set_valist: 断言`GTK_IS_LIST_STORE (list_store)' 失败
(GtkTest.exe:15164): Gtk-CRITICAL **: gtk_list_store_set_valist: assertion `GTK_IS_LIST_STORE (list_store)' failed
我在尝试使用 gtk_list_store_set() 函数时遇到此错误。
整个程序是这样的：
1. 首先，使用gtk_builder 构建UI with a4.glade 文件。
2.其次，得到按钮的GObject和link函数调用的信号"print_hello"
3. 第三步，获取GtkTreeView的GObject并初始化。
print_hello 函数正在尝试修改 GtkTreeModel 的 list_store。主要目的是修改GtkTreeView的cell数据
Hello World
Step1 model=gtk_tree_view_get_model(this->treeview); Step2
gtk_tree_model_get_iter_first (model,&iter);
(GtkTest.exe:15164): Gtk-CRITICAL **: gtk_list_store_set_valist:
assertion `GTK_IS_LIST_STORE (list_store)' failed
main.c的代码
#include <gtk/gtk.h>
//Start Data Definition
typedef struct
{
const gboolean fixed;
const guint number;
const gchar *severity;
const gchar *description;
}Bug;
enum{
COLUMN_FIXED,
COLUMN_NUMBER,
COLUMN_SEVERITY,
COLUMN_DESCRIPTION,
COLUMN_PULSE,
COLUMN_ICON,
COLUMN_ACTIVE,
COLUMN_SENSITIVE,
NUM_COLUMNS
};
static Bug data[] ={
{ FALSE, 60482, "Normal", "scrollable notebooks and hidden tabs" },
{ FALSE, 60620, "Critical", "gdk_window_clear_area (gdkwindow-win32.c) is not thread-safe" },
{ FALSE, 50214, "Major", "Xft support does not clean up correctly" },
{ TRUE, 52877, "Major", "GtkFileSelection needs a refresh method. " },
{ FALSE, 56070, "Normal", "Can't click button after setting in sensitive" },
{ TRUE, 56355, "Normal", "GtkLabel - Not all changes propagate correctly" },
{ FALSE, 50055, "Normal", "Rework width/height computations for TreeView" },
{ FALSE, 58278, "Normal", "gtk_dialog_set_response_sensitive () doesn't work" },
{ FALSE, 55767, "Normal", "Getters for all setters" },
{ FALSE, 56925, "Normal", "Gtkcalender size" },
{ FALSE, 56221, "Normal", "Selectable label needs right-click copy menu" },
{ TRUE, 50939, "Normal", "Add shift clicking to GtkTextView" },
{ FALSE, 6112, "Enhancement","netscape-like collapsable toolbars" },
{ FALSE, 1, "Normal", "First bug :=)" },
};
//End Data Definition
static void fixed_toggled (GtkCellRendererToggle *cell,
gchar *path_str,
gpointer data){
GtkTreeModel *model = (GtkTreeModel*) data;
GtkTreeIter iter;
GtkTreePath *path = gtk_tree_path_new_from_string (path_str);
gboolean fixed;
/* get toggled iter */
gtk_tree_model_get_iter (model, &iter, path);
gtk_tree_model_get (model, &iter, COLUMN_FIXED, &fixed, -1);
/* do something with the value */
fixed ^= 1;
/* set new value */
gtk_list_store_set (GTK_LIST_STORE (model), &iter, COLUMN_FIXED, fixed, -1);
/* clean up */
gtk_tree_path_free (path);
}
GObject *treeview;
void initTreeView(){
GtkTreeModel *model;
//Create Data
gint i = 0;
GtkListStore *store;
GtkTreeIter iter;
/* create list store */
store = gtk_list_store_new (NUM_COLUMNS,
G_TYPE_BOOLEAN,
G_TYPE_UINT,
G_TYPE_STRING,
G_TYPE_STRING,
G_TYPE_UINT,
G_TYPE_STRING,
G_TYPE_BOOLEAN,
G_TYPE_BOOLEAN);
/* add data to the list store */
for (i = 0; i < G_N_ELEMENTS (data); i++){
gchar *icon_name;
gboolean sensitive;
if (i == 1 || i == 3)
icon_name = "battery-caution-charging-symbolic";
else
icon_name = NULL;
if (i == 3)
sensitive = FALSE;
else
sensitive = TRUE;
gtk_list_store_append (store, &iter);
gtk_list_store_set (store, &iter,
COLUMN_FIXED, data[i].fixed,
COLUMN_NUMBER, data[i].number,
COLUMN_SEVERITY, data[i].severity,
COLUMN_DESCRIPTION, data[i].description,
COLUMN_PULSE, 0,
COLUMN_ICON, icon_name,
COLUMN_ACTIVE, FALSE,
COLUMN_SENSITIVE, sensitive,
-1);
}
model=GTK_TREE_MODEL(store);
//model=gtk_tree_view_get_model((GtkTreeView*)treeview);
gtk_tree_view_set_model((GtkTreeView*)treeview, model);
GtkCellRenderer* renderer;
GtkTreeViewColumn *column;
renderer=gtk_cell_renderer_toggle_new ();
g_signal_connect (renderer, "toggled",G_CALLBACK (fixed_toggled), model);
column = gtk_tree_view_column_new_with_attributes ("Fixed?",renderer,"active", COLUMN_FIXED,NULL);
/* set this column to a fixed sizing (of 50 pixels) */
gtk_tree_view_column_set_sizing (GTK_TREE_VIEW_COLUMN (column),GTK_TREE_VIEW_COLUMN_FIXED);
gtk_tree_view_column_set_fixed_width (GTK_TREE_VIEW_COLUMN (column), 50);
gtk_tree_view_append_column ((GtkTreeView*)treeview, column);
/* column for bug numbers */
renderer = gtk_cell_renderer_text_new ();
column = gtk_tree_view_column_new_with_attributes ("Bug number",renderer,"text",COLUMN_NUMBER,NULL);
gtk_tree_view_column_set_sort_column_id (column, COLUMN_NUMBER);
gtk_tree_view_append_column ((GtkTreeView*)treeview, column);
renderer = gtk_cell_renderer_text_new ();
column = gtk_tree_view_column_new_with_attributes ("COLUMN_DESCRIPTION",renderer,"text",COLUMN_DESCRIPTION,NULL);
gtk_tree_view_column_set_sort_column_id (column, COLUMN_DESCRIPTION);
gtk_tree_view_append_column ((GtkTreeView*)treeview, column);
//GtkTreeIter iter;
gboolean valid;
gint row_count = 0;
valid = gtk_tree_model_get_iter_first (model,&iter);
gtk_list_store_set (store, &iter,
COLUMN_FIXED, data[i].fixed,
COLUMN_NUMBER, 20,
COLUMN_SEVERITY, data[i].severity,
COLUMN_DESCRIPTION, "sgdfrgs",
COLUMN_PULSE, 0,
COLUMN_ICON, "battery-caution-charging-symbolic",
COLUMN_ACTIVE, FALSE,
COLUMN_SENSITIVE, TRUE,
-1);
}
void on_window_destroy (GtkWidget *object, gpointer user_data) {
gtk_main_quit();
}
static void print_hello (GtkWidget *widget, gpointer data){
g_print ("Hello World\n");
GtkTreeModel *model;
//Create Data
gint i = 0;
GtkListStore *store;
GtkTreeIter iter;
gchar *str_data;
gint int_data;
// Make sure you terminate calls to gtk_tree_model_get() with a “-1” value
model=gtk_tree_view_get_model((GtkTreeView*)treeview);
g_print("\n\nStep1 model=gtk_tree_view_get_model(this->treeview);\n");
gboolean error = gtk_tree_model_get_iter_first (model,&iter);
gchar *str_data2;
gint int_data2;
// Make sure you terminate calls to gtk_tree_model_get() with a “-1” value
gtk_tree_model_get (model, &iter,
COLUMN_DESCRIPTION, &str_data2,
COLUMN_NUMBER, &int_data2,
-1);
g_print("Step2 gtk_tree_model_get_iter_first (model,&iter);\n",error);
//gdk_threads_enter();
gtk_list_store_set (store, &iter,
COLUMN_FIXED, TRUE,
COLUMN_NUMBER, int_data2 + 3,
COLUMN_SEVERITY, FALSE,
COLUMN_DESCRIPTION, "ABCABC bbc bbc",
COLUMN_PULSE, 0,
COLUMN_ICON, "battery-caution-charging-symbolic",
COLUMN_ACTIVE, FALSE,
COLUMN_SENSITIVE, TRUE,
-1);
//gdk_threads_leave();
// Before it is success!
int row_count=0;
gboolean valid=TRUE;
while (valid){
gchar *str_data;
gint int_data;
// Make sure you terminate calls to gtk_tree_model_get() with a “-1” value
gtk_tree_model_get (model, &iter,
COLUMN_DESCRIPTION, &str_data,
COLUMN_NUMBER, &int_data,
-1);
// Do something with the data
g_print ("Row %d: (%s,%d)\n",row_count, str_data, int_data);
g_free (str_data);
valid = gtk_tree_model_iter_next (model,&iter);
row_count++;
}
}
int main(int argc, char** argv) {
GtkWidget *window;
GObject *button;
GtkBuilder *builder;
gtk_init (&argc, &argv);
builder = gtk_builder_new ();
gtk_builder_add_from_file (builder, "a4.glade", NULL);
window = GTK_WIDGET (gtk_builder_get_object (builder, "window1"));
button = gtk_builder_get_object (builder, "button1");
treeview = gtk_builder_get_object (builder, "treeview3");
initTreeView();
g_signal_connect (window, "destroy", G_CALLBACK (on_window_destroy), NULL);
g_signal_connect (button, "clicked", G_CALLBACK (print_hello), NULL);
gtk_widget_show (window);
gtk_main ();
return 0;
}
a4.glade
的代码
<?xml version="1.0" encoding="UTF-8"?>
<interface>
<!-- interface-requires gtk+ 3.0 -->
<object class="GtkWindow" id="window1">
<property name="can_focus">False</property>
<child>
<object class="GtkBox" id="box1">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="orientation">vertical</property>
<child>
<object class="GtkTreeView" id="treeview3">
<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">False</property>
<property name="fill">True</property>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkButton" id="button1">
<property name="label" translatable="yes">button</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
</object>
<packing>
<property name="expand">False</property>
<property name="fill">True</property>
<property name="position">1</property>
</packing>
</child>
</object>
</child>
</object>
</interface>
store 变量未在 print_hello() 中初始化。您可能想完全删除商店并使用
gtk_list_store_set (GTK_LIST_STORE (model), &iter,
...
-1);
虽然这部分代码的意图不是很明显。
“-Wall”编译器标志是你的朋友：我相信它会抱怨这个问题。
我在尝试使用 gtk_list_store_set() 函数时遇到此错误。 整个程序是这样的： 1. 首先，使用gtk_builder 构建UI with a4.glade 文件。 2.其次，得到按钮的GObject和link函数调用的信号"print_hello" 3. 第三步，获取GtkTreeView的GObject并初始化。
print_hello 函数正在尝试修改 GtkTreeModel 的 list_store。主要目的是修改GtkTreeView的cell数据
Hello World
Step1 model=gtk_tree_view_get_model(this->treeview); Step2
gtk_tree_model_get_iter_first (model,&iter);(GtkTest.exe:15164): Gtk-CRITICAL **: gtk_list_store_set_valist: assertion `GTK_IS_LIST_STORE (list_store)' failed
main.c的代码
#include <gtk/gtk.h>
//Start Data Definition
typedef struct
{
const gboolean fixed;
const guint number;
const gchar *severity;
const gchar *description;
}Bug;
enum{
COLUMN_FIXED,
COLUMN_NUMBER,
COLUMN_SEVERITY,
COLUMN_DESCRIPTION,
COLUMN_PULSE,
COLUMN_ICON,
COLUMN_ACTIVE,
COLUMN_SENSITIVE,
NUM_COLUMNS
};
static Bug data[] ={
{ FALSE, 60482, "Normal", "scrollable notebooks and hidden tabs" },
{ FALSE, 60620, "Critical", "gdk_window_clear_area (gdkwindow-win32.c) is not thread-safe" },
{ FALSE, 50214, "Major", "Xft support does not clean up correctly" },
{ TRUE, 52877, "Major", "GtkFileSelection needs a refresh method. " },
{ FALSE, 56070, "Normal", "Can't click button after setting in sensitive" },
{ TRUE, 56355, "Normal", "GtkLabel - Not all changes propagate correctly" },
{ FALSE, 50055, "Normal", "Rework width/height computations for TreeView" },
{ FALSE, 58278, "Normal", "gtk_dialog_set_response_sensitive () doesn't work" },
{ FALSE, 55767, "Normal", "Getters for all setters" },
{ FALSE, 56925, "Normal", "Gtkcalender size" },
{ FALSE, 56221, "Normal", "Selectable label needs right-click copy menu" },
{ TRUE, 50939, "Normal", "Add shift clicking to GtkTextView" },
{ FALSE, 6112, "Enhancement","netscape-like collapsable toolbars" },
{ FALSE, 1, "Normal", "First bug :=)" },
};
//End Data Definition
static void fixed_toggled (GtkCellRendererToggle *cell,
gchar *path_str,
gpointer data){
GtkTreeModel *model = (GtkTreeModel*) data;
GtkTreeIter iter;
GtkTreePath *path = gtk_tree_path_new_from_string (path_str);
gboolean fixed;
/* get toggled iter */
gtk_tree_model_get_iter (model, &iter, path);
gtk_tree_model_get (model, &iter, COLUMN_FIXED, &fixed, -1);
/* do something with the value */
fixed ^= 1;
/* set new value */
gtk_list_store_set (GTK_LIST_STORE (model), &iter, COLUMN_FIXED, fixed, -1);
/* clean up */
gtk_tree_path_free (path);
}
GObject *treeview;
void initTreeView(){
GtkTreeModel *model;
//Create Data
gint i = 0;
GtkListStore *store;
GtkTreeIter iter;
/* create list store */
store = gtk_list_store_new (NUM_COLUMNS,
G_TYPE_BOOLEAN,
G_TYPE_UINT,
G_TYPE_STRING,
G_TYPE_STRING,
G_TYPE_UINT,
G_TYPE_STRING,
G_TYPE_BOOLEAN,
G_TYPE_BOOLEAN);
/* add data to the list store */
for (i = 0; i < G_N_ELEMENTS (data); i++){
gchar *icon_name;
gboolean sensitive;
if (i == 1 || i == 3)
icon_name = "battery-caution-charging-symbolic";
else
icon_name = NULL;
if (i == 3)
sensitive = FALSE;
else
sensitive = TRUE;
gtk_list_store_append (store, &iter);
gtk_list_store_set (store, &iter,
COLUMN_FIXED, data[i].fixed,
COLUMN_NUMBER, data[i].number,
COLUMN_SEVERITY, data[i].severity,
COLUMN_DESCRIPTION, data[i].description,
COLUMN_PULSE, 0,
COLUMN_ICON, icon_name,
COLUMN_ACTIVE, FALSE,
COLUMN_SENSITIVE, sensitive,
-1);
}
model=GTK_TREE_MODEL(store);
//model=gtk_tree_view_get_model((GtkTreeView*)treeview);
gtk_tree_view_set_model((GtkTreeView*)treeview, model);
GtkCellRenderer* renderer;
GtkTreeViewColumn *column;
renderer=gtk_cell_renderer_toggle_new ();
g_signal_connect (renderer, "toggled",G_CALLBACK (fixed_toggled), model);
column = gtk_tree_view_column_new_with_attributes ("Fixed?",renderer,"active", COLUMN_FIXED,NULL);
/* set this column to a fixed sizing (of 50 pixels) */
gtk_tree_view_column_set_sizing (GTK_TREE_VIEW_COLUMN (column),GTK_TREE_VIEW_COLUMN_FIXED);
gtk_tree_view_column_set_fixed_width (GTK_TREE_VIEW_COLUMN (column), 50);
gtk_tree_view_append_column ((GtkTreeView*)treeview, column);
/* column for bug numbers */
renderer = gtk_cell_renderer_text_new ();
column = gtk_tree_view_column_new_with_attributes ("Bug number",renderer,"text",COLUMN_NUMBER,NULL);
gtk_tree_view_column_set_sort_column_id (column, COLUMN_NUMBER);
gtk_tree_view_append_column ((GtkTreeView*)treeview, column);
renderer = gtk_cell_renderer_text_new ();
column = gtk_tree_view_column_new_with_attributes ("COLUMN_DESCRIPTION",renderer,"text",COLUMN_DESCRIPTION,NULL);
gtk_tree_view_column_set_sort_column_id (column, COLUMN_DESCRIPTION);
gtk_tree_view_append_column ((GtkTreeView*)treeview, column);
//GtkTreeIter iter;
gboolean valid;
gint row_count = 0;
valid = gtk_tree_model_get_iter_first (model,&iter);
gtk_list_store_set (store, &iter,
COLUMN_FIXED, data[i].fixed,
COLUMN_NUMBER, 20,
COLUMN_SEVERITY, data[i].severity,
COLUMN_DESCRIPTION, "sgdfrgs",
COLUMN_PULSE, 0,
COLUMN_ICON, "battery-caution-charging-symbolic",
COLUMN_ACTIVE, FALSE,
COLUMN_SENSITIVE, TRUE,
-1);
}
void on_window_destroy (GtkWidget *object, gpointer user_data) {
gtk_main_quit();
}
static void print_hello (GtkWidget *widget, gpointer data){
g_print ("Hello World\n");
GtkTreeModel *model;
//Create Data
gint i = 0;
GtkListStore *store;
GtkTreeIter iter;
gchar *str_data;
gint int_data;
// Make sure you terminate calls to gtk_tree_model_get() with a “-1” value
model=gtk_tree_view_get_model((GtkTreeView*)treeview);
g_print("\n\nStep1 model=gtk_tree_view_get_model(this->treeview);\n");
gboolean error = gtk_tree_model_get_iter_first (model,&iter);
gchar *str_data2;
gint int_data2;
// Make sure you terminate calls to gtk_tree_model_get() with a “-1” value
gtk_tree_model_get (model, &iter,
COLUMN_DESCRIPTION, &str_data2,
COLUMN_NUMBER, &int_data2,
-1);
g_print("Step2 gtk_tree_model_get_iter_first (model,&iter);\n",error);
//gdk_threads_enter();
gtk_list_store_set (store, &iter,
COLUMN_FIXED, TRUE,
COLUMN_NUMBER, int_data2 + 3,
COLUMN_SEVERITY, FALSE,
COLUMN_DESCRIPTION, "ABCABC bbc bbc",
COLUMN_PULSE, 0,
COLUMN_ICON, "battery-caution-charging-symbolic",
COLUMN_ACTIVE, FALSE,
COLUMN_SENSITIVE, TRUE,
-1);
//gdk_threads_leave();
// Before it is success!
int row_count=0;
gboolean valid=TRUE;
while (valid){
gchar *str_data;
gint int_data;
// Make sure you terminate calls to gtk_tree_model_get() with a “-1” value
gtk_tree_model_get (model, &iter,
COLUMN_DESCRIPTION, &str_data,
COLUMN_NUMBER, &int_data,
-1);
// Do something with the data
g_print ("Row %d: (%s,%d)\n",row_count, str_data, int_data);
g_free (str_data);
valid = gtk_tree_model_iter_next (model,&iter);
row_count++;
}
}
int main(int argc, char** argv) {
GtkWidget *window;
GObject *button;
GtkBuilder *builder;
gtk_init (&argc, &argv);
builder = gtk_builder_new ();
gtk_builder_add_from_file (builder, "a4.glade", NULL);
window = GTK_WIDGET (gtk_builder_get_object (builder, "window1"));
button = gtk_builder_get_object (builder, "button1");
treeview = gtk_builder_get_object (builder, "treeview3");
initTreeView();
g_signal_connect (window, "destroy", G_CALLBACK (on_window_destroy), NULL);
g_signal_connect (button, "clicked", G_CALLBACK (print_hello), NULL);
gtk_widget_show (window);
gtk_main ();
return 0;
}
a4.glade
的代码<?xml version="1.0" encoding="UTF-8"?>
<interface>
<!-- interface-requires gtk+ 3.0 -->
<object class="GtkWindow" id="window1">
<property name="can_focus">False</property>
<child>
<object class="GtkBox" id="box1">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="orientation">vertical</property>
<child>
<object class="GtkTreeView" id="treeview3">
<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">False</property>
<property name="fill">True</property>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkButton" id="button1">
<property name="label" translatable="yes">button</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
</object>
<packing>
<property name="expand">False</property>
<property name="fill">True</property>
<property name="position">1</property>
</packing>
</child>
</object>
</child>
</object>
</interface>
store 变量未在 print_hello() 中初始化。您可能想完全删除商店并使用
gtk_list_store_set (GTK_LIST_STORE (model), &iter,
...
-1);
虽然这部分代码的意图不是很明显。
“-Wall”编译器标志是你的朋友：我相信它会抱怨这个问题。