On 01/05/2015 08:37 PM, Krzysztof wrote:
Hi,
I'm testing Gtk3 (I know that it is in alpha stage). I have latest
lazarus from svn (1.3)
When using low level Gtk3 api then this code work fine:
uses
{$IFDEF UNIX}{$IFDEF UseCThreads}
cthreads,
{$ENDIF}{$ENDIF}
Interfaces, // this includes the LCL widgetset
LazGtk3, LazGObject2;
{$R *.res}
var
window: PGtkWindow;
entry1, entry2: PGtkWidget;
vbox: PGtkWidget;
begin
gtk_init (@argc, @argv);
window := gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_title (window, 'Window');
g_signal_connect_data(window, 'destroy', TGCallback(@gtk_main_quit),
nil, nil, 0);
vbox := gtk_box_new(GTK_ORIENTATION_VERTICAL, 2);
gtk_container_add (PGtkContainer(window), vbox);
entry1 := gtk_entry_new ();
gtk_entry_set_text(PGtkEntry(entry1), 'Hello');
entry2 := gtk_entry_new ();
gtk_entry_set_placeholder_text(PGtkEntry(entry2), '<Test>');
gtk_box_pack_start(PGtkBox(vbox), entry1, True, True, 0);
gtk_box_pack_start(PGtkBox(vbox), entry2, True, True, 0);
gtk_widget_show_all (window);
gtk_main ();
end.
But if I create LCL application, then change LCLWidgetType to Gtk3 and
call this:
procedure TForm1.Button1Click(Sender: TObject);
begin
gtk_entry_set_placeholder_text(Edit1.Handle), PChar('Test'));
That's because Edit1.Handle is not PGtkEntry, but TGtk3Entry, so this
code should work (you must include gtk3widgets unit to get it work):
gtk_entry_set_placeholder_text(PGtkEntry(TGtk3Edit(Edit1.Handle).Widget),
PChar('Test'));
or
var
AEntry: PGtkEntry;
begin
AEntry := PGtkEntry(TGtk3Edit(Edit1.Handle).Widget);
gtk_entry_set_placeholder_text(AEntry, PChar('Test'));
end;
zeljko
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