National Instruments Window Changes to the Programmer Reference Manual

LabWindows/CVI Release Notes for Windows 26 © National Instruments Corporation
New Error Codes
Table3 lists the new User Interface Library error codes.
Using the User Interface Library in a Multithreaded Executable
under Windows 95/NT
The User Interface Library is now multithread safe when used on Windows 95/NT in a
standalone executable or in a DLL called from a standalone executable. For more information
on ways you can use the User Interface Library in a multithreaded program and various
behaviors, rules, and restrictions, refer to the Multithreading in a Windows 95/NT Executable
section in Chapter 3, Programming with the User Interface Library, in the Lab Win dows/ CV I
User Interface Reference Manual.
Mouse Wheel Support
The LabWindows/CVI User Interface panels now support mouse pointing devices with
wheels, such as the Microsoft IntelliPoint Mouse. The mouse wheel allows you to scroll up
or down in any panel, listbox control, or textbox control that contains a vertical scrollbar.
Changes to the Programmer Reference Manual
This section contains several additions to the LabWindows/CVI Programmer Reference
Manual.
Stack Size
The maximum stack size on Windows 3.1 has increased to 40 KB.
After you install the LabWindows/CVI development environment, the default stack size for
program execution increases to 40 KB on Windows 3.1 and 250 KB on all other platforms.
Table 3. New User Interface Library Error Codes
Code Error Message
–129 The specified operation can be performed only in the thread in which
the top-level panel was created.
–130 The specified panel was not found in the .tui file.
–131 The specified menubar was not found in the .tui file.
–132 The specified control style was not found in the .tui file.
–133 A tag or value is missing in the .tui file.