For CComboBox If you want some simple effects, there is no need to spend so much effort to redraw we can use some of his own property can I say here is inherited directly from CComboBox

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CComboBoxCheck.aps
CComboBoxCheck.cpp
CComboBoxCheck.h
CComboBoxCheck.rc
CComboBoxCheck.sln
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CComboBoxCheckDlg.cpp
CComboBoxCheckDlg.h
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