Note: On Windows, set NoErrMsg to control whether a message appears to indicate that a runtime error has occurred. When NoErrMsg is false (the default), runtime errors cause the application to display a message box indicating the type of error that occurred. When NoErrMsg is true, these messages are suppressed.

Note: The SysUtils unit turns most runtime errors into exceptions. If your application includes SysUtils, the runtime error message box is unlikely to appear, even if NoErrMsg is false.