Re: gtk_widget_show_all() is not enough to show data plots

Oi Romildo
Definitely a bug. Checkout the new CVS version.
Obrigado!

Saludos,
<ADRIAN>

[email protected] wrote:

>Hello.
>
>I am learning gtk+extra-2, and came to the following
>issue:
>
>If I use gtk_show_all(window), where window is the
>top level window of the application, to enable
>showing the window and all its components, a dataset
>is not drawn.
>
>To test this I used the attached C program. The
>dataset is not plot if lines 53 and 68 are
>commented out.
>
>Is this a bug?
>
>Romildo
>
>---------------------
>WEBMAIL UBER INTERNET
>  
>
>------------------------------------------------------------------------
>
>/* plot.c */
>
>#include <gtk/gtk.h>
>#include <gtkextra/gtkplot.h>
>#include <gtkextra/gtkplotcanvas.h>
>#include <gtkextra/gtkplotcanvasplot.h>
>#include <gtkextra/gtkplotdata.h>
>
>#include <math.h>
>
>#define NPOINTS 20
>
>int main(int argc, char *argv[])
>{
>   GtkWidget *window;
>   GtkWidget *canvas;
>   GtkPlot *plot;
>   GtkPlotData *dataset;
>   GtkPlotCanvasChild *child;
>
>   gdouble px[NPOINTS];
>   gdouble py[NPOINTS];
>
>   gint i;
>
>   gtk_init(&argc, &argv);
>
>   /* main window */
>   window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
>   gtk_window_set_title(GTK_WINDOW(window), "Plot");
>   gtk_container_border_width(GTK_CONTAINER(window), 8);
>   g_signal_connect(GTK_OBJECT(window), "destroy", G_CALLBACK(gtk_main_quit), NULL);
>
>   /* canvas */
>   canvas = gtk_plot_canvas_new(400, 300, 1.0);
>   GTK_PLOT_CANVAS_UNSET_FLAGS(GTK_PLOT_CANVAS(canvas), GTK_PLOT_CANVAS_DND_FLAGS);
>   gtk_container_add(GTK_CONTAINER(window), canvas);
>
>   /* plot */
>   plot = GTK_PLOT(gtk_plot_new(NULL));
>   gtk_plot_set_range(plot, 0, 2*M_PI, -10, 10);
>   gtk_plot_set_ticks(plot, GTK_PLOT_AXIS_X, 1, 4);
>   gtk_plot_set_ticks(plot, GTK_PLOT_AXIS_Y, 5, 4);
>   gtk_plot_axis_hide_title(gtk_plot_get_axis(plot, GTK_PLOT_AXIS_TOP));
>   gtk_plot_axis_hide_title(gtk_plot_get_axis(plot, GTK_PLOT_AXIS_RIGHT));
>   gtk_plot_axis_set_title(gtk_plot_get_axis(plot, GTK_PLOT_AXIS_BOTTOM), "x");
>   gtk_plot_axis_set_title(gtk_plot_get_axis(plot, GTK_PLOT_AXIS_LEFT), "sin(x)");
>   gtk_plot_hide_legends(plot);
>
>   /* canvas plot */
>   child = gtk_plot_canvas_plot_new(plot);
>   gtk_plot_canvas_put_child(GTK_PLOT_CANVAS(canvas), child, 0.15, 0.15, 0.85, 0.85);
>   gtk_widget_show(GTK_WIDGET(plot));
>
>   /* plot dataset */
>   for (i = 0; i < NPOINTS; i++)
>      {
>	 const gdouble x = i * (2*M_PI) / NPOINTS;
> 	 px[i] = x;
> 	 py[i] = 10.0 * sin(x);
>	 /* g_printf("%i  x = %f  y = %f\n", i, px[i], py[i]); */
>      }
>
>   dataset = GTK_PLOT_DATA(gtk_plot_data_new());
>   gtk_plot_add_data(plot, dataset);
>   gtk_plot_data_set_points(dataset, px, py, NULL, NULL, NPOINTS);
>   gtk_plot_data_draw_points(dataset, NPOINTS);
>   gtk_widget_show(GTK_WIDGET(dataset));
>
>   gtk_plot_canvas_paint(GTK_PLOT_CANVAS(canvas));
>   gtk_plot_canvas_refresh(GTK_PLOT_CANVAS(canvas));
>
>   gtk_widget_show_all(window);
>
>   gtk_main();
>
>   return 0;
>}
>  
>



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