Hi there,
In my Gtk::Window i add a "Gtk::Table" which contain some Gtk::Frame. In fact i can switch visualisation of different Table. I use it to draw some curve and i would like to export all the Table to picture. When i try to export onei succeed to create my picture but if i try to export all by starting from the first, export , switching to next, export , etc... i have picture of 1px by 1px. I tried to slow it and i saw that my table don't appear. I suppose that it's an graphical allocation problem.
Any idea?here is a sample of my code :
void MyApp::export_all()
{
for (int i = 0; i< GetNbEcran() ;++i)
{
move_to_screen(i);
Glib::Timer time;
time.start();
while (time.elapsed() < 1 )
{
}
time.stop();
Glib::ustring str2 = "./ecran ";
std::ostringstream converter;
converter << (i+1);
str2 += converter.str();
str2 += ".bmp";
get_root_window()->show();
get_root_window()->process_all_updates();
queue_draw();
(*m_IterEcran)->export_to_bmp(str2);
}
}
void CEcran::export_to_bmp(Glib::ustring filename)
{
int w = 0;
int h = 0;
show_all_children();
Gtk::Allocation allocation = get_allocation();
GdkWindowAttr attributes;
memset(&attributes, 0, sizeof(attributes));
//Set initial position and size of the Gdk::Window:
attributes.x = allocation.get_x();
attributes.y = allocation.get_y();
attributes.width = allocation.get_width();
attributes.height = allocation.get_height();
attributes.event_mask = get_events () | Gdk::EXPOSURE_MASK;
attributes.window_type = GDK_WINDOW_CHILD;
attributes.wclass = GDK_INPUT_OUTPUT;
Glib::RefPtr<Gdk::Window> refGdkWindow = Gdk::Window::create(get_window() /* parent */, &attributes, GDK_WA_X | GDK_WA_Y);
refGdkWindow->process_all_updates ();
get_root_window()->show();
get_root_window()->process_all_updates();
refGdkWindow->get_size(w,h);
Glib::RefPtr<Gdk::Colormap> colormap = get_colormap();
Glib::RefPtr<Gdk::Image> img = Gdk::Image::create(Gdk::IMAGE_NORMAL ,get_visual(), w,h);
img = refGdkWindow->get_image(0,0,w,h);
Glib::RefPtr<Gdk::Pixbuf> pixbuf = Gdk::Pixbuf::create(img, colormap, 0,0,0,0,w,h);
pixbuf->save(filename,"bmp");
}