自学教程：C++ GTK_IS_EDITABLE函数代码示例

/** * e_dialog_editable_get: * @widget: A #GtkEditable widget. * * Queries the string value inside a #GtkEditable-derived widget. * * Return value: String value.  You should free it when you are done with it. * This function can return NULL if the string could not be converted from * GTK+'s encoding into UTF8. **/gchar *e_dialog_editable_get (GtkWidget *widget){	g_return_val_if_fail (GTK_IS_EDITABLE (widget), NULL);	return gtk_editable_get_chars (GTK_EDITABLE (widget), 0, -1);}

/** * gtk_editable_get_position: * @editable: a #GtkEditable * * Retrieves the current position of the cursor relative to the start * of the content of the editable.  *  * Note that this position is in characters, not in bytes. * * Return value: the cursor position */gintgtk_editable_get_position (GtkEditable *editable){  g_return_val_if_fail (GTK_IS_EDITABLE (editable), 0);  return GTK_EDITABLE_GET_IFACE (editable)->get_position (editable);}

/** * gtk_editable_paste_clipboard: * @editable: a #GtkEditable * * Pastes the content of the clipboard to the current position of the * cursor in the editable. */voidgtk_editable_paste_clipboard (GtkEditable *editable){  g_return_if_fail (GTK_IS_EDITABLE (editable));    g_signal_emit_by_name (editable, "paste-clipboard");}

/** * gtk_editable_set_position: * @editable: a #GtkEditable * @position: the position of the cursor  * * Sets the cursor position in the editable to the given value. * * The cursor is displayed before the character with the given (base 0)  * index in the contents of the editable. The value must be less than or  * equal to the number of characters in the editable. A value of -1  * indicates that the position should be set after the last character  * of the editable. Note that @position is in characters, not in bytes. */voidgtk_editable_set_position (GtkEditable      *editable,			   gint              position){  g_return_if_fail (GTK_IS_EDITABLE (editable));  GTK_EDITABLE_GET_IFACE (editable)->set_position (editable, position);}

/** * gtk_editable_select_region: (virtual set_selection_bounds) * @editable: a #GtkEditable * @start_pos: start of region * @end_pos: end of region * * Selects a region of text. The characters that are selected are  * those characters at positions from @start_pos up to, but not  * including @end_pos. If @end_pos is negative, then the * characters selected are those characters from @start_pos to  * the end of the text. *  * Note that positions are specified in characters, not bytes. */voidgtk_editable_select_region (GtkEditable *editable,			    gint         start_pos,			    gint         end_pos){  g_return_if_fail (GTK_IS_EDITABLE (editable));    GTK_EDITABLE_GET_IFACE (editable)->set_selection_bounds (editable, start_pos, end_pos);}

/** * gtk_editable_delete_text: (virtual do_delete_text) * @editable: a #GtkEditable * @start_pos: start position * @end_pos: end position * * Deletes a sequence of characters. The characters that are deleted are  * those characters at positions from @start_pos up to, but not including  * @end_pos. If @end_pos is negative, then the characters deleted * are those from @start_pos to the end of the text. * * Note that the positions are specified in characters, not bytes. */voidgtk_editable_delete_text (GtkEditable *editable,			  gint         start_pos,			  gint         end_pos){  g_return_if_fail (GTK_IS_EDITABLE (editable));  GTK_EDITABLE_GET_IFACE (editable)->do_delete_text (editable, start_pos, end_pos);}

static voideditable_undo_delete_text (GObject *object,                           gint position_start,                           gint position_end){	g_return_if_fail (GTK_IS_EDITABLE (object));	gtk_editable_delete_text (GTK_EDITABLE (object), position_start, position_end);}

static voideditable_undo_insert_text (GObject *object,                           const gchar *text,                           gint position){	g_return_if_fail (GTK_IS_EDITABLE (object));	gtk_editable_insert_text (GTK_EDITABLE (object), text, -1, &position);}

gchar *    gtk_editable_get_chars (GtkEditable *editable,			gint         start,			gint         end){  g_return_val_if_fail (GTK_IS_EDITABLE (editable), NULL);  return GTK_EDITABLE_GET_CLASS (editable)->get_chars (editable, start, end);}

voidgtk_editable_select_region (GtkEditable *editable,			    gint         start,			    gint         end){  g_return_if_fail (GTK_IS_EDITABLE (editable));    GTK_EDITABLE_GET_CLASS (editable)->set_selection_bounds (editable,  start, end);}

/** * gtk_editable_get_chars: * @editable: a #GtkEditable * @start_pos: start of text * @end_pos: end of text * * Retrieves a sequence of characters. The characters that are retrieved  * are those characters at positions from @start_pos up to, but not  * including @end_pos. If @end_pos is negative, then the characters * retrieved are those characters from @start_pos to the end of the text. *  * Note that positions are specified in characters, not bytes. * * Return value: a pointer to the contents of the widget as a *      string. This string is allocated by the #GtkEditable *      implementation and should be freed by the caller. */gchar *    gtk_editable_get_chars (GtkEditable *editable,			gint         start_pos,			gint         end_pos){  g_return_val_if_fail (GTK_IS_EDITABLE (editable), NULL);  return GTK_EDITABLE_GET_IFACE (editable)->get_chars (editable, start_pos, end_pos);}

static void on_break_ignore_editing_started(G_GNUC_UNUSED GtkCellRenderer *cell,	GtkCellEditable *editable, G_GNUC_UNUSED const gchar *path, G_GNUC_UNUSED gpointer gdata){	if (GTK_IS_EDITABLE(editable))		validator_attach(GTK_EDITABLE(editable), VALIDATOR_NUMERIC);	if (GTK_IS_ENTRY(editable))		gtk_entry_set_max_length(GTK_ENTRY(editable), 10);}

/** * gtk_editable_delete_selection: * @editable: a #GtkEditable * * Deletes the currently selected text of the editable. * This call doesn’t do anything if there is no selected text. */voidgtk_editable_delete_selection (GtkEditable *editable){  gint start, end;  g_return_if_fail (GTK_IS_EDITABLE (editable));  if (gtk_editable_get_selection_bounds (editable, &start, &end))    gtk_editable_delete_text (editable, start, end);}

/** * gtk_editable_set_editable: * @editable: a #GtkEditable * @is_editable: %TRUE if the user is allowed to edit the text *   in the widget * * Determines if the user can edit the text in the editable * widget or not.  */voidgtk_editable_set_editable (GtkEditable    *editable,			   gboolean        is_editable){  g_return_if_fail (GTK_IS_EDITABLE (editable));  g_object_set (editable,		"editable", is_editable != FALSE,		NULL);}

static voidedit_copy_activated (GtkAction  * action,                     CMainWindow* self){	if (GTK_IS_EDITABLE (gtk_window_get_focus (GTK_WINDOW (self)))) {		gtk_editable_copy_clipboard (GTK_EDITABLE (gtk_window_get_focus (GTK_WINDOW (self))));	} else if (C_IS_TASK_WIDGET (gtk_window_get_focus (GTK_WINDOW (self)))) {                c_task_widget_copy_clipboard (C_TASK_WIDGET (gtk_window_get_focus (GTK_WINDOW (self))));	}}

/** * gtk_editable_get_editable: * @editable: a #GtkEditable * * Retrieves whether @editable is editable. See * gtk_editable_set_editable(). * * Return value: %TRUE if @editable is editable. */gbooleangtk_editable_get_editable (GtkEditable *editable){  gboolean value;  g_return_val_if_fail (GTK_IS_EDITABLE (editable), FALSE);  g_object_get (editable, "editable", &value, NULL);  return value;}

/** * e_dialog_editable_set: * @widget: A #GtkEditable widget. * @value: String value. * * Sets the string value inside a #GtkEditable-derived widget. **/voide_dialog_editable_set (GtkWidget *widget,                       const gchar *value){	gint pos = 0;	g_return_if_fail (GTK_IS_EDITABLE (widget));	gtk_editable_delete_text (GTK_EDITABLE (widget), 0, -1);	if (value)		gtk_editable_insert_text (GTK_EDITABLE (widget), value, strlen (value), &pos);}

void on_paste(GtkAction* act, FmMainWin* win){    GtkWidget* focus = gtk_window_get_focus((GtkWindow*)win);    if(GTK_IS_EDITABLE(focus) )    {        gtk_editable_paste_clipboard((GtkEditable*)focus);    }    else    {        FmPath* path = fm_folder_view_get_cwd(FM_FOLDER_VIEW(win->folder_view));        fm_clipboard_paste_files(win->folder_view, path);    }}

/** * gtk_editable_insert_text: (virtual do_insert_text) * @editable: a #GtkEditable * @new_text: the text to append * @new_text_length: the length of the text in bytes, or -1 * @position: (inout): location of the position text will be inserted at * * Inserts @new_text_length bytes of @new_text into the contents of the * widget, at position @position. * * Note that the position is in characters, not in bytes.  * The function updates @position to point after the newly inserted text. */voidgtk_editable_insert_text (GtkEditable *editable,			  const gchar *new_text,			  gint         new_text_length,			  gint        *position){  g_return_if_fail (GTK_IS_EDITABLE (editable));  g_return_if_fail (position != NULL);  if (new_text_length < 0)    new_text_length = strlen (new_text);    GTK_EDITABLE_GET_IFACE (editable)->do_insert_text (editable, new_text, new_text_length, position);}

static void on_display_editing_started(G_GNUC_UNUSED GtkCellRenderer *cell,	GtkCellEditable *editable, const gchar *path_str, ScpTreeStore *store){	GtkTreeIter iter;	const char *value;	gint hb_mode;	g_assert(GTK_IS_EDITABLE(editable));	scp_tree_store_get_iter_from_string(store, &iter, path_str);	scp_tree_store_get(store, &iter, COLUMN_VALUE, &value, COLUMN_HB_MODE, &hb_mode, -1);	/* scrolling editable to the proper position is left as an exercise for the reader */	g_signal_connect(editable, "map-event", G_CALLBACK(on_display_editable_map_event),		parse_get_display_from_7bit(value, hb_mode, MR_EDITVC));}

voidcaja_clipboard_set_up_editable (GtkEditable *target,                                GtkUIManager *ui_manager,                                gboolean shares_selection_changes){    g_return_if_fail (GTK_IS_EDITABLE (target));    g_return_if_fail (GTK_IS_UI_MANAGER (ui_manager));    caja_clipboard_real_set_up (target, ui_manager,                                shares_selection_changes,                                editable_select_all_callback,                                editable_connect_callbacks,                                editable_disconnect_callbacks);}

void on_copy1_activate(GtkMenuItem *menuitem, gpointer user_data){	GtkWidget *focusw = gtk_window_get_focus(GTK_WINDOW(main_widgets.window));	if (GTK_IS_EDITABLE(focusw))		gtk_editable_copy_clipboard(GTK_EDITABLE(focusw));	else if (IS_SCINTILLA(focusw))		sci_copy(SCINTILLA(focusw));	else if (GTK_IS_TEXT_VIEW(focusw))	{		GtkTextBuffer *buffer = gtk_text_view_get_buffer(			GTK_TEXT_VIEW(focusw));		gtk_text_buffer_copy_clipboard(buffer, gtk_clipboard_get(GDK_NONE));	}}

void on_delete1_activate(GtkMenuItem *menuitem, gpointer user_data){	GtkWidget *focusw = gtk_window_get_focus(GTK_WINDOW(main_widgets.window));	if (GTK_IS_EDITABLE(focusw))		gtk_editable_delete_selection(GTK_EDITABLE(focusw));	else if (IS_SCINTILLA(focusw) && sci_has_selection(SCINTILLA(focusw)))		sci_clear(SCINTILLA(focusw));	else if (GTK_IS_TEXT_VIEW(focusw))	{		GtkTextBuffer *buffer = gtk_text_view_get_buffer(			GTK_TEXT_VIEW(focusw));		gtk_text_buffer_delete_selection(buffer, TRUE, TRUE);	}}

static voidwidget_undo_place_cursor_at (GObject *object,                             gint char_pos){	if (GTK_IS_EDITABLE (object))		gtk_editable_set_position (GTK_EDITABLE (object), char_pos);	else if (GTK_IS_TEXT_BUFFER (object)) {		GtkTextBuffer *buffer;		GtkTextIter pos;		buffer = GTK_TEXT_BUFFER (object);		gtk_text_buffer_get_iter_at_offset (buffer, &pos, char_pos);		gtk_text_buffer_place_cursor (buffer, &pos);	}}

static void on_break_ignore_editing_started(G_GNUC_UNUSED GtkCellRenderer *cell,	GtkCellEditable *editable, const gchar *path_str, G_GNUC_UNUSED gpointer gdata){	GtkTreeIter iter;	const gchar *ignore;	if (GTK_IS_EDITABLE(editable))		validator_attach(GTK_EDITABLE(editable), VALIDATOR_NUMERIC);	if (GTK_IS_ENTRY(editable))		gtk_entry_set_max_length(GTK_ENTRY(editable), 10);	scp_tree_store_get_iter_from_string(store, &iter, path_str);	scp_tree_store_get(store, &iter, BREAK_IGNORE, &ignore, -1);	g_signal_connect(editable, "map", G_CALLBACK(on_view_editable_map), g_strdup(ignore));}

/* Edit->Select All */voidaction_select_all(GtkAction *action, I7Document *document){	GtkWidget *widget = gtk_window_get_focus(GTK_WINDOW(document));	/* What actually happens depends on the type of widget that is focused */	if(WEBKIT_IS_WEB_VIEW(widget))		webkit_web_view_select_all(WEBKIT_WEB_VIEW(widget));	else if(GTK_IS_LABEL(widget) && gtk_label_get_selectable(GTK_LABEL(widget)))		gtk_label_select_region(GTK_LABEL(widget), 0, -1);	else if(GTK_IS_EDITABLE(widget))		gtk_editable_select_region(GTK_EDITABLE(widget), 0, -1);	else if(GTK_IS_TEXT_VIEW(widget))		g_signal_emit_by_name(widget, "select-all", TRUE, NULL);	else /* If we don't know how to select it, just select all in the source */		g_signal_emit_by_name(i7_document_get_default_view(document), "select-all", TRUE, NULL);}

void on_copy(GtkAction* act, FmMainWin* win){    GtkWidget* focus = gtk_window_get_focus((GtkWindow*)win);    if(GTK_IS_EDITABLE(focus) &&       gtk_editable_get_selection_bounds((GtkEditable*)focus, NULL, NULL) )    {        gtk_editable_copy_clipboard((GtkEditable*)focus);    }    else    {        FmPathList* files = fm_folder_view_get_selected_file_paths(FM_FOLDER_VIEW(win->folder_view));        if(files)        {            fm_clipboard_copy_files(win, files);            fm_list_unref(files);        }    }}

/** * gtk_test_text_set: * @widget:     valid widget pointer. * @string:     a 0-terminated C string * * Set the text string of @widget to @string if it is a GtkLabel, * GtkEditable (entry and text widgets) or GtkTextView. * * Since: 2.14 **/voidgtk_test_text_set (GtkWidget   *widget,                   const gchar *string){    if (GTK_IS_LABEL (widget))        gtk_label_set_text (GTK_LABEL (widget), string);    else if (GTK_IS_EDITABLE (widget))    {        int pos = 0;        gtk_editable_delete_text (GTK_EDITABLE (widget), 0, -1);        gtk_editable_insert_text (GTK_EDITABLE (widget), string, -1, &pos);    }    else if (GTK_IS_TEXT_VIEW (widget))    {        GtkTextBuffer *tbuffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (widget));        gtk_text_buffer_set_text (tbuffer, string, -1);    }}

static void remmina_file_editor_on_realize(GtkWidget* widget, gpointer user_data){	RemminaFileEditor* gfe;	GtkWidget* defaultwidget;	gfe = REMMINA_FILE_EDITOR(widget);	defaultwidget = gfe->priv->name_entry;	if (defaultwidget)	{		if (GTK_IS_EDITABLE(defaultwidget))		{			gtk_editable_select_region(GTK_EDITABLE(defaultwidget), 0, -1);		}		gtk_widget_grab_focus(defaultwidget);	}}

/** * gtk_editable_get_selection_bounds: * @editable: a #GtkEditable * @start_pos: (out) (allow-none): location to store the starting position, or %NULL * @end_pos: (out) (allow-none): location to store the end position, or %NULL * * Retrieves the selection bound of the editable. start_pos will be filled * with the start of the selection and @end_pos with end. If no text was * selected both will be identical and %FALSE will be returned. * * Note that positions are specified in characters, not bytes. * * Return value: %TRUE if an area is selected, %FALSE otherwise */gbooleangtk_editable_get_selection_bounds (GtkEditable *editable,				   gint        *start_pos,				   gint        *end_pos){  gint tmp_start, tmp_end;  gboolean result;    g_return_val_if_fail (GTK_IS_EDITABLE (editable), FALSE);  result = GTK_EDITABLE_GET_IFACE (editable)->get_selection_bounds (editable, &tmp_start, &tmp_end);  if (start_pos)    *start_pos = MIN (tmp_start, tmp_end);  if (end_pos)    *end_pos = MAX (tmp_start, tmp_end);  return result;}