objective c - NSWindowController showWindow only works once -

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i have subclass of nswindowcontroller has own nib , class has ibaction show window , loads so.

if (!propertiescontroller){     propertiescontroller = [[propertiescontroller alloc] init]; } [propertiescontroller showwindow:self];

it first time after close window , call method again window not displayed. sure window not getting released. possibly have override showwindow order window front? or have specify window controller uses in nib?

have tried

[propertiescontroller.window makekeyandorderfront:self];

?


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