NOTE

It is very important that you call the input method whenever a signal arrives. MUI needs this to correctly refresh its windows, handle resizing and iconification operations and commodities and ARexx messages. If you don't, you will annoy your user!

If your program needs to be in a state where you are for some reasons unable to call the input method for a considerable amount of time (maybe half a second or more), you should put your application to sleep. See MUIA_Application_Sleep on how to do this.