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Fixed assert on Linux
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@ -1056,6 +1056,7 @@ void ColourPicker::set_undef_value(wxColourPickerCtrl* field)
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wxButton* btn = dynamic_cast<wxButton*>(field->GetPickerCtrl());
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wxButton* btn = dynamic_cast<wxButton*>(field->GetPickerCtrl());
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wxBitmap bmp = btn->GetBitmap();
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wxBitmap bmp = btn->GetBitmap();
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wxMemoryDC dc(bmp);
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wxMemoryDC dc(bmp);
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if (!dc.IsOk()) return;
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dc.SetTextForeground(*wxWHITE);
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dc.SetTextForeground(*wxWHITE);
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dc.SetFont(wxGetApp().normal_font());
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dc.SetFont(wxGetApp().normal_font());
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