Avoid "Gtk-WARNING **: State doesn't match"

See https://github.com/wxWidgets/wxWidgets/pull/232

src/gtk/control.cpp

@@ -252,6 +252,7 @@ wxControl::GetDefaultAttributesFromGTKWidget(GtkWidget* widget,
     GtkStyleContext* sc = gtk_widget_get_style_context(widget);
     GdkRGBA *fc, *bc;
     wxNativeFontInfo info;
+    gtk_style_context_set_state(sc, stateFlag);
     gtk_style_context_get(sc, stateFlag,
         "color", &fc, "background-color", &bc,
         GTK_STYLE_PROPERTY_FONT, &info.description, NULL);

src/gtk/settings.cpp

@@ -156,6 +156,7 @@ static void get_color(const char* name, GtkWidget* widget, GtkStateFlags state,
 {
     GtkStyleContext* sc = gtk_widget_get_style_context(widget);
     GdkRGBA* rgba;
+    gtk_style_context_set_state(sc, state);
     gtk_style_context_get(sc, state, name, &rgba, NULL);
     gdkRGBA = *rgba;
     gdk_rgba_free(rgba);
@@ -163,6 +164,7 @@ static void get_color(const char* name, GtkWidget* widget, GtkStateFlags state,
     {
         widget = gtk_widget_get_parent(GTK_WIDGET(ContainerWidget()));
         sc = gtk_widget_get_style_context(widget);
+        gtk_style_context_set_state(sc, state);
         gtk_style_context_get(sc, state, name, &rgba, NULL);
         gdkRGBA = *rgba;
         gdk_rgba_free(rgba);
@@ -448,6 +450,7 @@ wxFont wxSystemSettingsNative::GetFont( wxSystemFont index )
                 wxNativeFontInfo info;
 #ifdef __WXGTK3__
                 GtkStyleContext* sc = gtk_widget_get_style_context(ButtonWidget());
+                gtk_style_context_set_state(sc, GTK_STATE_FLAG_NORMAL);
                 gtk_style_context_get(sc, GTK_STATE_FLAG_NORMAL,
                     GTK_STYLE_PROPERTY_FONT, &info.description, NULL);
 #else

src/gtk/spinbutt.cpp

@@ -194,7 +194,7 @@ wxSize wxSpinButton::DoGetBestSize() const
 #ifdef __WXGTK3__
     GtkStyleContext* sc = gtk_widget_get_style_context(m_widget);
     GtkBorder pad = { 0, 0, 0, 0 };
-    gtk_style_context_get_padding(sc, GtkStateFlags(0), &pad);
+    gtk_style_context_get_padding(sc, gtk_style_context_get_state(sc), &pad);
     best.x -= pad.left + pad.right;
 #else
     gtk_widget_ensure_style(m_widget);

src/gtk/textctrl.cpp

@@ -1835,6 +1835,7 @@ void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
             gtk_style_context_save(context);
             gtk_style_context_add_class(context, GTK_STYLE_CLASS_VIEW);
         }
+        gtk_style_context_set_state(context, selectedFocused);
         gtk_style_context_get(context, selectedFocused,
             "color", &fg_orig, "background-color", &bg_orig,
             NULL);

src/gtk/win_gtk.cpp

@@ -452,6 +452,7 @@ void wxPizza::get_border(GtkBorder& border)
         else
             sc = gtk_widget_get_style_context(wxGTKPrivate::GetEntryWidget());
 
+        gtk_style_context_set_state(sc, GTK_STATE_FLAG_NORMAL);
         gtk_style_context_get_border(sc, GTK_STATE_FLAG_NORMAL, &border);
 #else // !__WXGTK3__
         GtkStyle* style;

src/gtk/window.cpp

@@ -373,6 +373,7 @@ draw_border(GtkWidget* widget, GdkEventExpose* gdk_event, wxWindow* win)
 #ifdef __WXGTK3__
         GtkStyleContext* sc = gtk_widget_get_style_context(win->m_wxwindow);
         GdkRGBA* c;
+        gtk_style_context_set_state(sc, GTK_STATE_FLAG_NORMAL);
         gtk_style_context_get(sc, GTK_STATE_FLAG_NORMAL, "border-color", &c, NULL);
         gdk_cairo_set_source_rgba(cr, c);
         gdk_rgba_free(c);
@@ -4561,6 +4562,7 @@ void wxWindowGTK::GTKApplyStyle(GtkWidget* widget, GtkRcStyle* WXUNUSED_IN_GTK3(
     cairo_pattern_t* pattern = NULL;
     if (m_backgroundColour.IsOk())
     {
+        gtk_style_context_set_state(context, GTK_STATE_FLAG_NORMAL);
         gtk_style_context_get(context,
             GTK_STATE_FLAG_NORMAL, "background-image", &pattern, NULL);
     }