Does CE Support Displaying Large MESSAGEBOX on Narrow Screens?
Yes, Windows CE version 2.1 added MessageBox options to the registry that will enable support for displaying large MessageBox in narrow screens. For example, the MessageBox() API does not display the “Cancel/Ignore” button but instead uses the “Close/Cancel” (that is, X) button to achieve the same functionality. This saves screen space when screens are narrow and text strings are long.