BUG: OLE 16-bit Controls Halts System Painting to the Screen

• Professional and Enterprise Editions of Microsoft Visual Basic, 16-bit only, for Windows, version 4.0
• Microsoft OLE Control Developer's Kit (CDK), 16-bit only
• Microsoft Visual C++ for Windows, version 1.5x
• Microsoft Windows for Workgroups, version 3.11

SYMPTOMS

Opening any menu of a program created in the 16-bit edition of Visual Basic, version 4.0, containing the 16-bit OCX controls listed below or any control using the 16-bit edition of the Microsoft OLE Control Developer's Kit (CDK) shipping with Microsoft Visual C++ for Windows, version 1.5x stops the system from painting to the screen when running Microsoft Windows for Workgroup version 3.11. Any programs running in the background in addition to the Visual Basic program still run, however, the screens of these background programs are not repainted. Clicking near the menu to close the menu resumes screen painting. This behavior only occurs when running Windows for Workgroups 3.11 and is limited to the following controls:

   Custom Control Name                    File Name
   ---------------------------------------------------

   Desaware Animated Button Control      ANIBTN16.OCX
   MicroHelp Key State Control           KEYSTA16.OCX
   Microsoft Data Bound List Controls    DBLIST16.OCX
   Microsoft Grid Control                GRID16.OCX
   Microsoft Masked Edit Control         MSMASK16.OCX
   Microsoft Multimedia Control          MCI16.OCX
   Microsoft Outline Control             MSOUTL16.OCX
   Pinnacle-BPS Graph Control            GRAPH16.OCX
   Sheridan 3D Controls                  THREED16.OCX

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. Microsoft is 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 Accessories group of Program Manager, double-click the Clock icon to start the Clock program.

2. On the Settings menu, click Digital to change the Clock Settings to Digital.

3. Move the Clock window to the lower-right corner of your screen. The Clock Window must be visible while Visual Basic is running.

4. Start the 16-bit version of Visual Basic 4.0, or if it is already running, click New Project on the File menu.

5. From the toolbox, add one of the 16-bit controls listed in the Symptoms section to Form1.

6. Press the F5 key to start the Visual Basic program. Make sure both the Visual Basic program and the Clock program are running.

7. Open the system menu by pressing ALT+SPACEBAR. The clock stops. When you click near the system menu to close the menu, the clock displays the current time.