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https://gitlab.com/freepascal.org/fpc/source.git
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55 lines
1.6 KiB
ObjectPascal
55 lines
1.6 KiB
ObjectPascal
program ex2;
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uses
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gdk,glib,gtk,strings;
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procedure destroy(widget : pGtkWidget ; data: pgpointer ); cdecl;
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begin
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gtk_main_quit();
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end;
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Const
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Inside : PChar ='Mouse is over label';
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OutSide : PChar ='Mouse is not over label';
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var
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OverLabel : Boolean;
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window, box1, box2, stackbox, label1, Label2 : PGtkWidget;
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Procedure ChangeLabel(P : PGtkWidget;
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Event : PGdkEventCrossing;
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Var Data : Boolean);cdecl;
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begin
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If Not Data then
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gtk_label_set_text(PGTKLABEL(Label2),Inside)
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else
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gtk_label_set_text(PGTKLABEL(Label2),Outside);
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Data := Not Data;
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end;
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begin
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gtk_init (@argc, @argv);
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window := gtk_window_new (GTK_WINDOW_TOPLEVEL);
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stackbox:=gtk_vbox_new(TRUE,10);
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box1 := gtk_event_box_new();
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label1 := gtk_label_new(strnew('Move mouse over label'));
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gtk_container_add(GTK_CONTAINER(box1),label1);
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box2 := gtk_event_box_new();
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label2 := gtk_label_new(strNew(OutSide));
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gtk_container_add(GTK_CONTAINER(box2),label2);
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gtk_box_pack_start(GTK_BOX(stackbox),box1,TRUE,TRUE,0);
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gtk_box_pack_start(GTK_BOX(stackbox),box2,TRUE,TRUE,0);
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gtk_container_set_border_width(GTK_CONTAINER(Window),5);
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gtk_container_add(GTK_Container(window),stackbox);
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gtk_signal_connect(PGTKOBJECT (window), 'destroy',
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GTK_SIGNAL_FUNC (@destroy), NULL);
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overlabel:=False;
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gtk_signal_connect(PGTKOBJECT(box1),'enter_notify_event',
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GTK_SIGNAL_FUNC (@ChangeLabel), @Overlabel);
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gtk_signal_connect(PGTKOBJECT(box1),'leave_notify_event',
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GTK_SIGNAL_FUNC (@ChangeLabel), @Overlabel);
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gtk_widget_show_all (window);
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gtk_main ();
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end.
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