Display Images In A fixed Container
This example sets the main window to be a fixed container into which you can place images at specified positions
MainWindow = gtk_window_new(GTK_WINDOW_TOPLEVEL); //GTK_WINDOW_TOPLEVEL = Has a titlebar and border, managed by the window manager.
//Get screen size
int ScreenWidth;
int ScreenHeight;
GdkScreen *screen = gtk_window_get_screen(GTK_WINDOW(MainWindow));
ScreenWidth = gdk_screen_get_width(screen); // in pixels
ScreenHeight = gdk_screen_get_height(screen);
//Create a Fixed Container
GtkWidget *fixed;
fixed = gtk_fixed_new();
gtk_widget_set_size_request(fixed, ScreenWidth, ScreenHeight);
gtk_container_add(GTK_CONTAINER(MainWindow), fixed);
gtk_widget_show(fixed);
//Add an image
GtkWidget *image;
image = gtk_image_new_from_file("/home/pi/projects/my_project/images/my_image.png");
gtk_fixed_put(GTK_FIXED (fixed), image, 10, 20); //x, y from top left
gtk_widget_show_all(MainWindow);
Change an image
gtk_image_set_from_file(GTK_IMAGE(image), "/home/pi/projects/my_project/images/my_image2.png");
Clear an image
gtk_image_clear(GTK_IMAGE(imgDialSequence));
Delete an image
gtk_widget_destroy(imgDialSequence);
imgDialSequence = NULL;
You can safely used destroy on a widget that hasn’t actually been displayed yet. You can re-create and place the widget again later after it has previously been destroyed, you’re just removing its current usage.
Paths
The path you specify is not the path referenced from the executable, it must be the actual path to the image as otherwise the image won’t be shown when running your executable by specifying its path from another location.