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fix crash where a menubar popups a menu and exits by shortcut(#261)

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This commit is contained in:
Jinhao 2017-09-23 07:33:31 +08:00
parent eec7344c6d
commit 13761be5e9
1 changed files with 20 additions and 4 deletions
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16
source/gui/widgets/menubar.cpp
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@ -403,8 +403,15 @@ namespace nana
ess_->state.nullify_mouse = true;
auto & menu_ptr = ess_->state.menu;
//menu_wd will be assigned with the handle of a menu window,
//It is used for checking whether the menu is closed. A menu handler
//may close the form, checking with the data member of this trigger
//is invalid, because the form is closed, the object of menubar may not exist.
window menu_wd = nullptr;
if(ess_->state.menu)
{
menu_wd = menu_ptr->handle();
switch(arg.key)
{
case keyboard::os_arrow_down:
@ -467,7 +474,10 @@ namespace nana
case keyboard::os_arrow_down:
case keyboard::enter:
if (ess_->open_menu(true))
{
menu_wd = menu_ptr->handle();
menu_ptr->goto_next(true);
}
break;
case keyboard::escape:
if(essence::behavior::focus == ess_->state.behave)
@ -482,15 +492,21 @@ namespace nana
{
ess_->state.active = index;
if (ess_->open_menu(true))
{
menu_wd = menu_ptr->handle();
menu_ptr->goto_next(true);
}
}
break;
}
}
if (API::is_window(menu_wd))
{
refresh(graph);
API::dev::lazy_refresh();
}
}
void trigger::key_release(graph_reference graph, const arg_keyboard& arg)
{