Allow calling this function not only from inside DoWriteText(): first, because the existing code could be doing this (although this is only a concern in 3.0 branch as it was made private in the trunk) and second because it could actually happen if the text limit was exceeded by user typing in the control. See #15980. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_3_0_BRANCH@76403 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775