I could not start DDD from a cygwin XServer. But other graphical programs are able to open their windows.
Attached are the log files and the output. Please check the details.
ddd: Symbol `_XmStrings' has different size in shared object, consider re-linking
Warning: Cannot convert string "arrow" to type FontStruct X Error of failed request: BadCursor (invalid Cursor parameter) Major opcode of failed request: 28 (X_GrabButton) Resource id in failed request: 0x8390028
Serial number of failed request: 2889 Current serial number in output stream: 2964 Widget hierarchy of resource: unknown X Error of failed request: BadCursor (invalid Cursor parameter) Major opcode of failed request: 28 (X_GrabButton)
Resource id in failed request: 0x8390028 Serial number of failed request: 2922 Current serial number in output stream: 2966 Widget hierarchy of resource: unknown