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Task/Window-creation/Nim/window-creation-1.nim

@@ -0,0 +1,52 @@
+import
+  gdk2, glib2, gtk2
+
+proc thisDestroy(widget: pWidget, data: pgpointer){.cdecl.} =
+  main_quit()
+
+const
+  Inside: cstring = "Mouse is over label"
+  OutSide: cstring = "Mouse is not over label"
+
+var
+  OverButton: bool
+
+nim_init()
+var window = window_new(gtk2.WINDOW_TOPLEVEL)
+var stackbox = vbox_new(TRUE, 10)
+var button1 = button_new("Move mouse over button")
+var buttonstyle = copy(get_style(Button1))
+ButtonStyle.bg[STATE_PRELIGHT].pixel = 0
+ButtonStyle.bg[STATE_PRELIGHT].red = -1'i16
+ButtonStyle.bg[STATE_PRELIGHT].blue = 0'i16
+ButtonStyle.bg[STATE_PRELIGHT].green = 0'i16
+set_style(button1, buttonstyle)
+var button2 = button_new()
+var ALabel = label_new(Outside)
+var button3 = button_new("Quit")
+
+
+proc ChangeLabel(P: PWidget, Event: gdk2.PEventCrossing,
+                 Data: var bool){.cdecl.} =
+  if Not Data: set_text(ALabel, Inside)
+  else: set_text(ALabel, Outside)
+  Data = Not Data
+
+
+add(button2, ALAbel)
+pack_start(stackbox, button1, TRUE, TRUE, 0)
+pack_start(stackbox, button2, TRUE, TRUE, 0)
+pack_start(stackbox, button3, TRUE, TRUE, 0)
+set_border_width(Window, 5)
+add(window, stackbox)
+discard signal_connect(window, "destroy",
+                   SIGNAL_FUNC(thisDestroy), nil)
+overbutton = False
+discard signal_connect(button1, "enter_notify_event",
+                   SIGNAL_FUNC(ChangeLabel), addr(OverButton))
+discard signal_connect(button1, "leave_notify_event",
+                   SIGNAL_FUNC(ChangeLabel), addr(OverButton))
+discard signal_connect(button3, "clicked",
+                   SIGNAL_FUNC(thisDestroy), nil)
+show_all(window)
+main()