BUG: List Box Does Not Display in FoxPro for MS-DOS

• Microsoft FoxPro for MS-DOS, version 2.6a

SYMPTOMS

If a Desktop screen holds a list box and a command button that shells to MS- DOS returns to the screen, the list box will not appear until the screen is exited.

WORKAROUND

Change the screen type from Desktop to Window in Screen Layout area (on the Screen menu, click Screen Layout).

STATUS

Microsoft has confirmed this to be a problem in the Microsoft products listed at the beginning of this article. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.

MORE INFORMATION

Steps to Reproduce Problem

1. In the Command window, type each of these commands:

   USE TUTORIAL\CUSTOMER. CREATE SCREEN LISTTEST

2. On the Screen menu, click List. Then click Prompt Field, and type CNO. Type Junk as the variable name.

3. In the Valid event for the list box, type:

   SHOW GETS

4. Click OK to return to the form. Size the list box as needed.

5. On the Screen menu, click Field. Then click SAY, and choose the Customer.Company field. Select the Refresh check box. Click OK.

6. On the Screen menu, click Push Button. Type in prompts of MS-DOS and Quit for the two options needed. Choose SELCHOICE as the variable.

7. In the Valid event for the push buttons, type:

   DO CASE

        CASE SELCHOICE = 1
           CLEAR
           RUN COMMAND
           CLEAR
           SHOW GETS
        CASE SELCHOICE = 2
           CLEAR READ
      ENDCASE
      SHOW GETS
   
   

8. Run the screen, and click the MS-DOS button. Type EXIT at the MS-DOS prompt, and note that the list box is now hidden.

9. Click the Quit Button to close the screen. Change the screen type to Window. Run the screen, and click the MS-DOS button. Type EXIT at the MS-DOS prompt, and note that the list box is now visible.