cchAutoName 56 third_party/wtl/include/atlframe.h enum { cchAutoName = 5 + sizeof(void*) * 2 }; // sizeof(void*) * 2 is the number of digits %p outputs cchAutoName 59 third_party/wtl/include/atlframe.h enum { cchAutoName = MAX_PATH }; // MAX_PATH because this can be set in the wizard generated CMainFrame::ActivatePreviousInstance to a user defined string.