Trouver un widget par son nom
Bonjour à tous, après plusieurs heures de recherche, je viens poser ma question sur le forum :aie:...
Je cherche comment trouver un widget d'après son nom.
J'utilise Netbeans pour programmer et Glade 3.6.7 pour générer mon fichier glade (j'utilise le format gtkbuilder).
Voici un résumé des noeuds avec lesquels je travaille.
Code:
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| <child>
<object class="GtkHBox" id="hbox1">
<property name="visible">True</property>
<child>
<object class="GtkButton" id="btnOriginal">
<property name="label" translatable="yes">Original</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
<signal name="clicked" handler="on_btnOriginal_clicked"/>
</object>
<packing>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkImage" id="imgStepOriginal">
<property name="visible">True</property>
<property name="xpad">1</property>
<property name="stock">gtk-ok</property>
<property name="icon-size">2</property>
</object>
<packing>
<property name="expand">False</property>
<property name="position">1</property>
</packing>
</child>
</object>
<packing>
<property name="position">1</property>
</packing>
</child> |
Donc, dans le bouton, il a le signal
<signal name="clicked" handler="on_btnOriginal_clicked"/>
et mon widget image
<object class="GtkImage" id="imgStepOriginal">
J'ai ensuite mis ce code :
Code:
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|
GtkWidget* lookup_widget(GtkWidget *widget, const gchar *widget_name) {
GtkWidget *parent, *found_widget;
for (;;) {
if (GTK_IS_MENU(widget))
parent = gtk_menu_get_attach_widget(GTK_MENU(widget));
else
parent = widget->parent;
if (!parent)
parent = (GtkWidget*) g_object_get_data(G_OBJECT(widget), "GladeParentKey");
if (parent == NULL)
break;
widget = parent;
printf("2\n");
}
found_widget = (GtkWidget*) g_object_get_data(G_OBJECT(widget),
widget_name);
if (!found_widget)
g_warning("Widget not found: %s", widget_name);
return found_widget;
}
void on_btnOriginal_clicked(GtkButton *button, gpointer user_data) {
GtkImage *image;
gint size;
GtkWidget *window = lookup_widget(GTK_WIDGET(button), "imgStepOriginal");
image = GTK_IMAGE(window);
if (image) {
size = gtk_image_get_pixel_size(image);
size + 5;
gtk_image_set_pixel_size(image, size);
}
} |
Le bouton est bien appelé, cependant, image est toujours égale à null (la variable image).
J'ai compris que lookup fonctionne qu'avec libglade et qu'il fallait utiliser la variable builder que j'ai créé dans mon main (en local).
Cependant, mon signal doit être dans le fichier générer par glade et je ne veux pas utiliser de variable globale.
Que puis-je faire pour accéder à mon widget image?
(Ps, le code pour la manipulation d'image n'était qu'un test, je suis en apprentissage)
Merci énormément, il est temps d'aller dormir...
Mathieu Benoit
EDIT : si vous voulez voir mon fichier générer par glade :
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| <?xml version="1.0"?>
<interface>
<requires lib="gtk+" version="2.16"/>
<!-- interface-naming-policy project-wide -->
<object class="GtkWindow" id="winPrincipal">
<property name="title" translatable="yes">Algorithme de Canny</property>
<property name="destroy_with_parent">True</property>
<property name="icon">image/NotisDBranchSmall.png</property>
<signal name="destroy" handler="on_winPrincipal_destroy"/>
<child>
<object class="GtkVBox" id="vbox1">
<property name="visible">True</property>
<property name="orientation">vertical</property>
<child>
<object class="GtkMenuBar" id="menubar1">
<property name="visible">True</property>
<child>
<object class="GtkMenuItem" id="menuitem1">
<property name="visible">True</property>
<property name="label" translatable="yes">_Fichier</property>
<property name="use_underline">True</property>
<child type="submenu">
<object class="GtkMenu" id="menu1">
<property name="visible">True</property>
<child>
<object class="GtkImageMenuItem" id="imagemenuitem1">
<property name="label">gtk-new</property>
<property name="visible">True</property>
<property name="use_underline">True</property>
<property name="use_stock">True</property>
</object>
</child>
<child>
<object class="GtkImageMenuItem" id="imagemenuitem2">
<property name="label">gtk-open</property>
<property name="visible">True</property>
<property name="use_underline">True</property>
<property name="use_stock">True</property>
</object>
</child>
<child>
<object class="GtkImageMenuItem" id="imagemenuitem3">
<property name="label">gtk-save</property>
<property name="visible">True</property>
<property name="use_underline">True</property>
<property name="use_stock">True</property>
</object>
</child>
<child>
<object class="GtkImageMenuItem" id="imagemenuitem4">
<property name="label">gtk-save-as</property>
<property name="visible">True</property>
<property name="use_underline">True</property>
<property name="use_stock">True</property>
</object>
</child>
<child>
<object class="GtkSeparatorMenuItem" id="separatormenuitem1">
<property name="visible">True</property>
</object>
</child>
<child>
<object class="GtkImageMenuItem" id="imagemenuitem5">
<property name="label">gtk-quit</property>
<property name="visible">True</property>
<property name="use_underline">True</property>
<property name="use_stock">True</property>
</object>
</child>
</object>
</child>
</object>
</child>
<child>
<object class="GtkMenuItem" id="menuitem2">
<property name="visible">True</property>
<property name="label" translatable="yes">É_dition</property>
<property name="use_underline">True</property>
<child type="submenu">
<object class="GtkMenu" id="menu2">
<property name="visible">True</property>
<child>
<object class="GtkImageMenuItem" id="imagemenuitem6">
<property name="label">gtk-cut</property>
<property name="visible">True</property>
<property name="use_underline">True</property>
<property name="use_stock">True</property>
</object>
</child>
<child>
<object class="GtkImageMenuItem" id="imagemenuitem7">
<property name="label">gtk-copy</property>
<property name="visible">True</property>
<property name="use_underline">True</property>
<property name="use_stock">True</property>
</object>
</child>
<child>
<object class="GtkImageMenuItem" id="imagemenuitem8">
<property name="label">gtk-paste</property>
<property name="visible">True</property>
<property name="use_underline">True</property>
<property name="use_stock">True</property>
</object>
</child>
<child>
<object class="GtkImageMenuItem" id="imagemenuitem9">
<property name="label">gtk-delete</property>
<property name="visible">True</property>
<property name="use_underline">True</property>
<property name="use_stock">True</property>
</object>
</child>
</object>
</child>
</object>
</child>
<child>
<object class="GtkMenuItem" id="menuitem3">
<property name="visible">True</property>
<property name="label" translatable="yes">_Affichage</property>
<property name="use_underline">True</property>
</object>
</child>
<child>
<object class="GtkMenuItem" id="menuitem4">
<property name="visible">True</property>
<property name="label" translatable="yes">Aid_e</property>
<property name="use_underline">True</property>
<child type="submenu">
<object class="GtkMenu" id="menu3">
<property name="visible">True</property>
<child>
<object class="GtkImageMenuItem" id="imagemenuitem10">
<property name="label">gtk-about</property>
<property name="visible">True</property>
<property name="use_underline">True</property>
<property name="use_stock">True</property>
</object>
</child>
</object>
</child>
</object>
</child>
</object>
<packing>
<property name="expand">False</property>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkHPaned" id="hpaned1">
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="position">613</property>
<property name="position_set">True</property>
<child>
<object class="GtkVBox" id="vbox2">
<property name="visible">True</property>
<property name="orientation">vertical</property>
<child>
<object class="GtkImage" id="image1">
<property name="visible">True</property>
<property name="stock">gtk-missing-image</property>
</object>
<packing>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkHBox" id="hbox3">
<property name="visible">True</property>
<child>
<object class="GtkButton" id="btnClose">
<property name="label" translatable="yes">Quitter</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
</object>
<packing>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkButton" id="btnOuvrir">
<property name="label" translatable="yes">Ouvrir</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
</object>
<packing>
<property name="position">1</property>
</packing>
</child>
<child>
<object class="GtkButton" id="btnEnregistrerSous">
<property name="label" translatable="yes">Enregistrer Sous</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
</object>
<packing>
<property name="position">2</property>
</packing>
</child>
<child>
<object class="GtkButton" id="btnFiltre">
<property name="label" translatable="yes">Filtre</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
<property name="focus_on_click">False</property>
</object>
<packing>
<property name="position">3</property>
</packing>
</child>
</object>
<packing>
<property name="expand">False</property>
<property name="position">1</property>
</packing>
</child>
</object>
<packing>
<property name="resize">False</property>
<property name="shrink">True</property>
</packing>
</child>
<child>
<object class="GtkVBox" id="vbox3">
<property name="visible">True</property>
<property name="orientation">vertical</property>
<child>
<object class="GtkLabel" id="lblEtat">
<property name="visible">True</property>
<property name="label" translatable="yes">Les états</property>
</object>
<packing>
<property name="expand">False</property>
<property name="fill">False</property>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkHBox" id="hbox1">
<property name="visible">True</property>
<child>
<object class="GtkButton" id="btnOriginal">
<property name="label" translatable="yes">Original</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
<signal name="clicked" handler="on_btnOriginal_clicked"/>
</object>
<packing>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkImage" id="imgStepOriginal">
<property name="visible">True</property>
<property name="xpad">1</property>
<property name="stock">gtk-ok</property>
<property name="icon-size">2</property>
</object>
<packing>
<property name="expand">False</property>
<property name="position">1</property>
</packing>
</child>
</object>
<packing>
<property name="position">1</property>
</packing>
</child>
<child>
<object class="GtkHBox" id="hbox2">
<property name="visible">True</property>
<child>
<placeholder/>
</child>
<child>
<placeholder/>
</child>
</object>
<packing>
<property name="position">2</property>
</packing>
</child>
<child>
<placeholder/>
</child>
<child>
<placeholder/>
</child>
<child>
<placeholder/>
</child>
<child>
<placeholder/>
</child>
<child>
<placeholder/>
</child>
</object>
<packing>
<property name="resize">True</property>
<property name="shrink">True</property>
</packing>
</child>
</object>
<packing>
<property name="position">1</property>
</packing>
</child>
<child>
<object class="GtkStatusbar" id="statusbar1">
<property name="visible">True</property>
<property name="spacing">2</property>
</object>
<packing>
<property name="expand">False</property>
<property name="position">2</property>
</packing>
</child>
</object>
</child>
</object>
</interface> |
