GTK3 +无法通过输入GTK3获得键盘输入

时间：2018-10-08 06:14:16

标签： c user-interface raspberry-pi3 gtk3 glade

所有条目均被停用。因此，我无法输入键盘输入。 林间空地中“ can_focus”已经成立。

我应该解决什么才能输入字符？

我在一个空地文件中也有2个对象。 登录成功后，例如使用gtk_main_quit（），我想关闭登录对话框。所以我实际上放了on_login_dialog_close函数。 我如何填充它？

但是，该对话框不是主要应用程序。在这种情况下，最好制作单独的文件（主文件，登录文件）吗？

如果我生成新的林间空地文件，那么如何一次控制两个林间空地文件？

#define DEBUG 1


//login
GtkWidget * userid_input;
GtkWidget *passwd_input;





G_MODULE_EXPORT void on_login_dialog_close()
{

}



G_MODULE_EXPORT void on_login_btn_clicked(GtkButton **button)
{
    if(DEBUG)
        fprintf(stderr,"Btn Clicked : Log In\n");



    const gchar * userid = NULL;
    const gchar * passwd = NULL;


    userid = gtk_entry_get_text(userid_input);
    passwd = gtk_entry_get_text(passwd_input);

    if(DEBUG)
        if(userid != NULL && passwd != NULL){
            fprintf(stderr, "Entry contents : (Id : %s Passwd: %s) \n", userid, passwd);
            //g_print("Entry Information : (Id : %s Passwd: %s) \n", *userid, *passwd);
        }
}



int main ()
{

    GError *err = NULL;
    gtk_init(NULL, NULL);
    view= gtk_text_view_new();
    buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(view));



    window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
    builder = gtk_builder_new();
    if(0 == gtk_builder_add_from_file(builder, "gssiot_sconv_main.glade", &err))
    {
        if(DEBUG)
            fprintf(stderr, "Error : Adding build from file. Error, %s\n", err->message);
    }

    window = GTK_WIDGET( gtk_builder_get_object( builder, "sconv_main_wdw"));
    if(NULL == window)
    {
        if(DEBUG)
            fprintf(stderr,"Error : Unable to file object with id: SCONV");
    }


    loginDialg = GTK_WIDGET( gtk_builder_get_object( builder, "popover_login"));
    if(NULL == loginDialg)
    {
        if(DEBUG)
            fprintf(stderr,"Error : Unable to file object with id: loginDialg\n");
    }
    else
    {
            //login
        userid_input = GTK_WIDGET( gtk_builder_get_object( builder, "username_entry"));
        passwd_input = GTK_WIDGET( gtk_builder_get_object( builder, "password_entry"));
        if((NULL == userid_input )||(NULL == passwd_input ))
            if(DEBUG)
                fprintf(stderr,"Error : Unable to file object with id: userid_input or passwd_input\n");

        userid_input = gtk_entry_new ();
        passwd_input = gtk_entry_new ();

    }

    viewport1 = GTK_WIDGET(gtk_builder_get_object (builder , "viewpoint_inner_vbox"));
    if(NULL == viewport1)
    {
        if(DEBUG)
            fprintf(stderr,"Error : Unable to file object with id: viewport_widget\n");
    }

    gtk_container_add(GTK_CONTAINER(viewport1), view);

    gtk_builder_connect_signals(builder, NULL); 
    //g_object_unref(G_OBJECT(builder));



    gtk_widget_show(loginDialg);
    gtk_widget_show(window);

    gtk_main();
    return 0;
}

.glade 

<?xml version="1.0" encoding="UTF-8"?>
<!-- Generated with glade 3.20.0 -->
<interface>
  <requires lib="gtk+" version="3.20"/>
  <object class="GtkDialog" id="login_dialog">
    <property name="name">Login</property>
    <property name="visible">True</property>
    <property name="can_focus">False</property>
    <property name="hexpand">True</property>
    <property name="vexpand">True</property>
    <property name="type">popup</property>
    <property name="resizable">False</property>
    <property name="window_position">center-always</property>
    <property name="icon_name">login</property>
    <property name="type_hint">dialog</property>
    <property name="focus_on_map">False</property>
    <signal name="close" handler="on_login_dialog_close" swapped="no"/>
    <child internal-child="vbox">
      <object class="GtkBox" id="login_vbox">
        <property name="can_focus">False</property>
        <property name="orientation">vertical</property>
        <property name="spacing">2</property>
        <child internal-child="action_area">
          <object class="GtkButtonBox" id="login_btn_opion">
            <property name="visible">True</property>
            <property name="can_focus">False</property>
            <property name="layout_style">end</property>
            <child>
              <object class="GtkButton" id="login_btn">
                <property name="label" translatable="yes">Log in</property>
                <property name="visible">True</property>
                <property name="can_focus">True</property>
                <property name="receives_default">True</property>
                <property name="halign">end</property>
                <property name="valign">center</property>
                <property name="margin_left">1</property>
                <property name="margin_right">1</property>
                <property name="margin_top">1</property>
                <property name="margin_bottom">1</property>
                <property name="hexpand">True</property>
                <property name="vexpand">True</property>
                <signal name="clicked" handler="on_login_btn_clicked" swapped="no"/>
              </object>
              <packing>
                <property name="expand">True</property>
                <property name="fill">True</property>
                <property name="position">0</property>
              </packing>
            </child>
            <child>
              <object class="GtkButton" id="register_btn">
                <property name="label" translatable="yes">Sign in</property>
                <property name="visible">True</property>
                <property name="can_focus">True</property>
                <property name="receives_default">True</property>
                <property name="halign">center</property>
                <property name="valign">center</property>
                <property name="hexpand">True</property>
                <property name="vexpand">True</property>
                <signal name="clicked" handler="on_register_btn_clicked" swapped="no"/>
              </object>
              <packing>
                <property name="expand">True</property>
                <property name="fill">True</property>
                <property name="position">1</property>
              </packing>
            </child>
          </object>
          <packing>
            <property name="expand">False</property>
            <property name="fill">False</property>
            <property name="position">0</property>
          </packing>
        </child>
        <child>
          <object class="GtkBox" id="user_login_input_box">
            <property name="visible">True</property>
            <property name="can_focus">True</property>
            <property name="orientation">vertical</property>
            <child>
              <object class="GtkBox" id="user_id_hbox">
                <property name="visible">True</property>
                <property name="can_focus">True</property>
                <child>
                  <object class="GtkLabel" id="id_input_lbl">
                    <property name="visible">True</property>
                    <property name="can_focus">True</property>
                    <property name="halign">start</property>
                    <property name="valign">center</property>
                    <property name="hexpand">True</property>
                    <property name="vexpand">True</property>
                    <property name="label" translatable="yes">USERNAME:</property>
                    <property name="single_line_mode">True</property>
                  </object>
                  <packing>
                    <property name="expand">False</property>
                    <property name="fill">True</property>
                    <property name="position">0</property>
                  </packing>
                </child>
                <child>
                  <object class="GtkEntry" id="userid_input">
                    <property name="visible">True</property>
                    <property name="can_focus">True</property>
                    <property name="halign">end</property>
                    <property name="valign">center</property>
                    <property name="margin_left">1</property>
                    <property name="margin_right">1</property>
                    <property name="margin_top">1</property>
                    <property name="margin_bottom">1</property>
                    <property name="hexpand">True</property>
                    <property name="vexpand">True</property>
                    <property name="max_length">20</property>
                    <property name="activates_default">True</property>
                    <property name="overwrite_mode">True</property>
                    <property name="placeholder_text" translatable="yes">username</property>
                  </object>
                  <packing>
                    <property name="expand">False</property>
                    <property name="fill">True</property>
                    <property name="position">1</property>
                  </packing>
                </child>
              </object>
              <packing>
                <property name="expand">False</property>
                <property name="fill">True</property>
                <property name="position">0</property>
              </packing>
            </child>
            <child>
              <object class="GtkBox" id="user_passwd_hbox">
                <property name="visible">True</property>
                <property name="can_focus">True</property>
                <child>
                  <object class="GtkLabel" id="passwd_input_lbl">
                    <property name="visible">True</property>
                    <property name="can_focus">False</property>
                    <property name="halign">start</property>
                    <property name="valign">center</property>
                    <property name="hexpand">True</property>
                    <property name="vexpand">True</property>
                    <property name="label" translatable="yes">PASSWORD:</property>
                    <property name="single_line_mode">True</property>
                  </object>
                  <packing>
                    <property name="expand">True</property>
                    <property name="fill">True</property>
                    <property name="position">0</property>
                  </packing>
                </child>
                <child>
                  <object class="GtkEntry" id="passwd_input">
                    <property name="visible">True</property>
                    <property name="can_focus">True</property>
                    <property name="halign">end</property>
                    <property name="valign">center</property>
                    <property name="margin_top">1</property>
                    <property name="margin_bottom">1</property>
                    <property name="hexpand">True</property>
                    <property name="vexpand">True</property>
                    <property name="max_length">20</property>
                    <property name="visibility">False</property>
                    <property name="invisible_char">*</property>
                    <property name="placeholder_text" translatable="yes">password</property>
                  </object>
                  <packing>
                    <property name="expand">False</property>
                    <property name="fill">True</property>
                    <property name="position">1</property>
                  </packing>
                </child>
              </object>
              <packing>
                <property name="expand">False</property>
                <property name="fill">True</property>
                <property name="position">1</property>
              </packing>
            </child>
          </object>
          <packing>
            <property name="expand">False</property>
            <property name="fill">True</property>
            <property name="position">1</property>
          </packing>
        </child>
      </object>
    </child>
  </object>
  <object class="GtkWindow" id="sconv_main_wdw">
    ...
  </object>
</interface>

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