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Bug 707092 - Add a null check and return proper constants on failure from GetTopLevelWindowActiveState, r=bbondy.

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This commit is contained in:
Jim Mathies 2011-12-02 10:23:55 -06:00
parent 5b61a6d8df
commit 9bf35ac537
1 changed files with 3 additions and 1 deletions
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4
widget/src/windows/nsNativeThemeWin.cpp
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@ -89,9 +89,11 @@ static PRInt32 GetTopLevelWindowActiveState(nsIFrame *aFrame)
// until it finds a real window.
nsIWidget* widget = aFrame->GetNearestWidget();
nsWindow * window = static_cast<nsWindow*>(widget);
if (!window)
return mozilla::widget::themeconst::FS_INACTIVE;
if (widget && !window->IsTopLevelWidget() &&
!(window = window->GetParentWindow(false)))
return false;
return mozilla::widget::themeconst::FS_INACTIVE;
if (window->GetWindowHandle() == ::GetActiveWindow())
return mozilla::widget::themeconst::FS_ACTIVE;