RE: Help me about this "drawable" error

["Dugas, Alan" <alan dugas analog com>]

I think you need to realize the drawing area widget before you can draw on it.
Try gtk_widget_realize(GTK_WIDGET(plot_area)) before you make your call to
gdk_draw_text().  Hope this helps.



                                -- Stupid Genius

> ----------
> From:         Jung-Wuk Hong[SMTP:jwhong MIT EDU]
> Sent:         Friday, November 10, 2000 5:11 AM
> To:   gtk-app-devel-list gnome org
> Subject:      Help me about this "drawable" error
>
> Hi
>
> I wrote a function to write text on popup window. However it doesn't work
> correctly.
> I met the error drawable!=NULL.
> Please help me about this problem.
>
> In main.c, this callback is connected like this "gtk_signal_connect( button1,
> "clicked", show_property, NULL);
>
> Although I could see the button generated in this callback....
>
> Thanks
>
> J. Hong
>
>
> void show_property()
> {
>   GtkWidget *property_window;
>   GtkWidget *button;
>   GtkWidget *vbox, *plot_area;
>   GdkFont *font;
>
>   property_window = gtk_window_new (GTK_WINDOW_POPUP); /* make init image
> window */
>   plot_area = gtk_drawing_area_new();
>   button = gtk_button_new_with_label("OK");
>
>   gtk_drawing_area_size( GTK_DRAWING_AREA(plot_area), 300, 200 );
>   vbox = gtk_vbox_new(FALSE, NO_SPACING);
>
>   gtk_window_set_position (GTK_WINDOW (property_window), GTK_WIN_POS_CENTER);
>
>   font = gdk_font_load ("-*-helvetica-bold-r-normal-*-14-*-*-*-*-*-*-*");
>
>   gdk_draw_text(GTK_WIDGET(plot_area)->window, font, 
>                 GTK_WIDGET(plot_area)->style->black_gc, 10,10, "abc",15);
>
>   gtk_box_pack_start( GTK_BOX(vbox), plot_area, FALSE, FALSE, NO_PADDING );
>   gtk_box_pack_start( GTK_BOX(vbox), button, FALSE, FALSE, NO_PADDING );
>   gtk_container_add( GTK_CONTAINER( property_window ), vbox );
>   gtk_widget_show_all(property_window);
> }
>
>
>
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