fixed incorrect wxCHECK (was a wrong negation before)
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@15064 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
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@@ -1621,7 +1621,7 @@ void wxTreeCtrl::DoExpand(const wxTreeItemId& item, int flag)
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wxT("Unknown flag in wxTreeCtrl::DoExpand") );
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// A hidden root can be neither expanded nor collapsed.
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wxCHECK_RET( (HITEM(item) != TVI_ROOT) || (m_windowStyle & wxTR_HIDE_ROOT),
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wxCHECK_RET( !(m_windowStyle & wxTR_HIDE_ROOT) || (HITEM(item) != TVI_ROOT),
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wxT("Can't expand/collapse hidden root node!") )
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// TreeView_Expand doesn't send TVN_ITEMEXPAND(ING) messages, so we must
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