Gtk組合框函數缺少參數和表達式

我想要做一個GTK 2+中的下拉菜單，並且我得出的結論是它們被稱爲「gtk_combo_box」。但是，每當我嘗試編譯，它給了我丟失的參數的函數錯誤...Gtk組合框函數缺少參數和表達式

這裏是一個重要的部分代碼：

vbox3_field = gtk_vbox_new (FALSE, 0); 
    gtk_container_add (GTK_CONTAINER (hbox2), vbox3_field); 
    gtk_box_pack_start (GTK_BOX (hbox2), vbox3_field, FALSE, TRUE, 0); 

    vbox3_sett = gtk_vbox_new (FALSE, 0); 
    gtk_container_add (GTK_CONTAINER (hbox2), vbox3_sett); 

    ball_menu=gtk_combo_box_text_new(); 
    gtk_combo_box_text_append_text (GtkComboBoxText ball_menu, "1"); 
    gtk_combo_box_text_append_text (GtkComboBoxText ball_menu, "2"); 
    gtk_combo_box_set_active (GtkComboBox *combo_box, 0); 
    //g_signal_connect (ball_menu, "changed", G_CALLBACK (cb_ball_selection), gtk_combo_box_text_get_active_text()); 
gtk_box_pack_start(GTK_BOX (vbox3_sett), ball_menu);

當我嘗試採取「GtkComboBoxText」出來的函數參數，它仍然給我一個警告，說不兼容的指針類型。（我宣佈「ball_menu」爲GtkWidget * ball_menu）。

的功能被定義爲遵循GTK 2+參考網站：

void 
gtk_combo_box_text_append_text (GtkComboBoxText *combo_box, 
           const gchar *text);

以下是編譯的結果：

gcc -o main main.c `pkg-config --cflags --libs gtk+-2.0` -lm 
main.c: In function ‘main’: 
main.c:265:35: error: expected expression before ‘GtkComboBox’ 
    gtk_combo_box_text_append_text (GtkComboBoxText ball_menu, "1"); 
           ^
main.c:265:35: error: too few arguments to function ‘gtk_combo_box_text_append_text’ 
In file included from /usr/include/gtk-2.0/gtk/gtk.h:74:0, 
       from main.c:1: 
/usr/include/gtk-2.0/gtk/gtkcomboboxtext.h:63:15: note: declared here 
void   gtk_combo_box_text_append_text  (GtkComboBoxText  *combo_box, 
      ^
main.c:266:35: error: expected expression before ‘GtkComboBoxText’ 
    gtk_combo_box_text_append_text (GtkComboBoxText ball_menu, "2"); 
           ^
main.c:266:35: error: too few arguments to function ‘gtk_combo_box_text_append_text’ 
In file included from /usr/include/gtk-2.0/gtk/gtk.h:74:0, 
       from main.c:1: 
/usr/include/gtk-2.0/gtk/gtkcomboboxtext.h:63:15: note: declared here 
void   gtk_combo_box_text_append_text  (GtkComboBoxText  *combo_box, 
      ^
main.c:267:29: error: expected expression before ‘GtkComboBox’ 
    gtk_combo_box_set_active (GtkComboBox *combo_box, 0); 
          ^
main.c:267:29: error: too few arguments to function ‘gtk_combo_box_set_active’ 
In file included from /usr/include/gtk-2.0/gtk/gtk.h:72:0, 
       from main.c:1: 
/usr/include/gtk-2.0/gtk/gtkcombobox.h:101:15: note: declared here 
void   gtk_combo_box_set_active  (GtkComboBox  *combo_box, 
      ^

有誰知道要做到這一點的原因是什麼？

來源

2015-01-07 Kelthar

gtk_combo_box_text_append_text (GtkComboBoxText ball_menu, "1");

沒有一個有效的投/轉換，改變

gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT(ball_menu), "1");

來源

2015-01-07 21:14:10

好，它的工作，謝謝。請注意，對於gtk_combo_box_set_active，演員似乎是GTK_COMBO_BOX。 – Kelthar

Gtk組合框函數缺少參數和表達式

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