PRB: Mouse Cursor Disappears in a DO WHILE Loop

ID: Q112399

The information in this article applies to:

Microsoft FoxPro for MS-DOS, versions 2.0, 2.5, 2.5a, and 2.5b

SYMPTOMS

When FoxPro for MS-DOS executes the INKEY() function with the "M" parameter, the mouse cursor remains visible. However, when FoxPro for MS-DOS executes a DO WHILE loop, the mouse cursor disappears.

STATUS

In FoxPro for MS-DOS, "no mouse" is the indicator that the mouse is busy when running user code. This behavior is by design.

MORE INFORMATION

The following code demonstrates the issue. In FoxPro for MS-DOS, create and execute this program:

   CLEAR
   SET MOUSE ON
   x = SECONDS()
   @10, 0 SAY "Start"
   =INKEY(2,"M")            && Mouse cursor remains visible in ;
                               FoxPro for MS-DOS
   @11, 0 SAY "End"

   DO WHILE SECONDS()-x<=5  && Mouse cursor disappears in ;
                               FoxPro for MS-DOS
   ENDDO

You will see that the mouse cursor remains visible between the "Start" and "End" points. The "M" parameter of the INKEY() function is required for this visual cue. When the code reaches the DO WHILE loop, the mouse cursor disappears.

Additional reference words: FoxDos 2.00 2.50 2.50a 2.50b KBCategory: kbprg kbprb KBSubcategory:

Last Reviewed: April 18, 1995