61 lines
2 KiB
Nim
61 lines
2 KiB
Nim
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import
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gtk2, glib2, atk, gdk2, gdk2pixbuf, libglade2, pango,
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pangoutils
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proc hello(widget: PGtkWidget, data: pointer) {.cdecl.} =
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write(stdout, "Hello World\n")
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proc delete_event(widget: PGtkWidget, event: PGdkEvent,
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data: pointer): bool {.cdecl.} =
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# If you return FALSE in the "delete_event" signal handler,
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# GTK will emit the "destroy" signal. Returning TRUE means
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# you don't want the window to be destroyed.
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# This is useful for popping up 'are you sure you want to quit?'
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# type dialogs.
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write(stdout, "delete event occurred\n")
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# Change TRUE to FALSE and the main window will be destroyed with
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# a "delete_event".
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return false
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# Another callback
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proc destroy(widget: PGtkWidget, data: pointer) {.cdecl.} =
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gtk_main_quit()
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proc main() =
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# GtkWidget is the storage type for widgets
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var
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window: PGtkWindow
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button: PGtkButton
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gtk_nimrod_init()
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window = GTK_WINDOW(gtk_window_new(GTK_WINDOW_TOPLEVEL))
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discard g_signal_connect(window, "delete_event",
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Gcallback(delete_event), nil)
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discard g_signal_connect(window, "destroy", Gcallback(destroy), nil)
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# Sets the border width of the window.
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gtk_container_set_border_width(window, 10)
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# Creates a new button with the label "Hello World".
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button = GTK_BUTTON(gtk_button_new_with_label("Hello World"))
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discard g_signal_connect(button, "clicked", Gcallback(hello), nil)
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# This will cause the window to be destroyed by calling
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# gtk_widget_destroy(window) when "clicked". Again, the destroy
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# signal could come from here, or the window manager.
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discard g_signal_connect_swapped(button, "clicked",
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Gcallback(gtk_widget_destroy), window)
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# This packs the button into the window (a gtk container).
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gtk_container_add(window, button)
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# The final step is to display this newly created widget.
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gtk_widget_show(button)
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# and the window
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gtk_widget_show(window)
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gtk_main()
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main()
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