Hey,
There is a redmine ticket already covering this:
http://redmine.emweb.be/issues/1512
So it seems that more people hit this problem, and thus it warrants a
proper fix -- I've assigned it to 3.3.1
Whether it's a caveat or a bug, I'ld leave in the middle.
Regards,
koen
2013/3/27 Steven Pier [GenoData GmbH] <p...@genodata.de>
> Hi,
>
> in the following example I have two diffferent dialogs. The first dialog
> (BaseDialog) recieves a callback-function. This function creates a new
> Dialog. Both dialogs are modal.
> The dialog deletes itself, by clicking one of the Buttons.
>
> When I push the "Ok"-Button in the first dialog, the content blocking
> layer for modal dialogs disappears. When I push the "Close"-Button in
> the second dialog, the layer appears even though no dialog exists.
>
> The cause of the problem is the functionality of the "saveCoverState"
> and "restoreCoverState" methods in the class "WDialog".
> The second dialog is created before the first dialog is deleted,
> therefore the first dialog hides the "cover", although the second dialog
> still exists.
>
> I know that this problem doesn't exist when I delete the first dialog,
> before I create the second dialog, but in some cases i want the dialogs
> to delete themselves.
>
> Do you think this is a bug, or is this example just the completely wrong
> practice?
>
>
> class BaseDialog : public WDialog {
>
> std::function<void()> callback;
>
> void OnOk ()
> {
> callback();
> delete this;
> }
>
> void OnClose ()
> {
> delete this;
> }
>
> public:
> BaseDialog (const std::function<void()>& callback) :
> WDialog("Base"), callback(callback)
> {
> resize(400, 300);
>
> auto btnCOk = new WPushButton("Ok", contents());
> btnCOk->clicked().connect(this, &BaseDialog::OnOk);
>
> auto btnClose = new WPushButton("Close", contents());
> btnClose->clicked().connect(this, &BaseDialog::OnClose);
> }
> };
>
> (new BaseDialog(std::bind([] () {
>
> auto dialog = new Wt::WDialog("Following");
> dialog->resize(300, 200);
>
> auto btn = new WPushButton("Close", dialog->contents());
> btn->clicked().connect(std::bind([=] () {
> delete dialog;
> }));
>
> dialog->show();
>
> })))->show();
>
>
> Best regards,
> Steven Pier
>
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