These events were only generated for wxTextCtrl but should be sent for non-readonly wxComboBox too, so refactor the code to allow its reuse from wxComboBox. Also add EVT_TEXT_PASTE handlers for both controls to the widgets sample for testing. Closes #14520. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72252 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775