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LabWindows/CVI Release Notes for Windows 24
©
National Instruments Corporation
Changes to Existing Functions
For GetPrintAttribute and SetPrintAttribute, the last parameter is the attribute
value. In previous versions of LabWindows/CVI, this is an integer. Now the parameter is a
variable type argument. This change does not require any modifications to your source code.
The attribute
ATTR_FLOATING has the following new constants:
The constant
VAL_FLOAT_APP_ACTIVE specifies to make the panel floating, or topmost,
only when the application is active. The constant
VAL_FLOAT_ALWAYS maintains the panel
as floating or topmost even when the application is not active.
When LabWindows/CVI displays a popup panel, such as when you call
FileSelectPopup
or
InstallPopup, all LabWindows/CVI panels with the ATTR_FLOATING attribute set to
either
VAL_FLOAT_APP_ACTIVE or VAL_FLOAT_ALWAYS do not float while the popup is
displayed. In previous versions of LabWindows/CVI, a floating window can cover the popup
window, preventing an interaction with the popup window.
LoadPanel, LoadPanelEx, LoadMenuBar, and LoadMenuBarEx now work on .tui files
and on
.uir files. Whereas .uir files are in binary format and load quickly, .tui files are
in text format and load slowly. You can save a
.tui file by using the Save in Text Format
command in the Options menu of the User Interface Editor. Because text format files load
slowly, National Instruments recommends that you continue to use
.uir files. The ability to
load
.tui files makes it possible for user-written wizards to generate user interface files that
you can load programmatically.
Details on Loading Panels and Menubars from .tui Files
When you call LoadPanel or LoadPanelEx on a .tui file, the panel resource ID parameter
must be the header number of the
.tui file section in which the panel is defined. For example,
if the section header for the desired panel is
[Panel003], pass 3 as the panel resource ID.
LoadPanel or LoadPanelEx loads all the controls in the .tui file with section headers in
the form
[Panel
NNN
_Control
YYY
], where
NNN
is the panel resource ID and
YYY
is 001 or
greater. The control numbers must start at 001 and be consecutive. To pass a control ID to
other User Interface Library functions, pass
YYY
+ 1. For instance, if the section header is
[Panel003_Control001] for a control on which you want to set an attribute value, pass 2
as the control ID parameter to
SetCtrlAttribute.
When you call
LoadMenuBar or LoadMenuBarEx on a .tui file, the menubar ID parameter
must be the header number of the
.tui file section in which the panel is defined. For example,
if the section header for the desired menubar is
[MenuBar003], pass 3 as the menubar ID.
LoadMenuBar or LoadMenuBarEx loads all the menus and menu items in the .tui file with
section headers in the form
[MenuBar
NNN
_...], where
NNN
is the menubar ID passed to
0 VAL_FLOAT_NEVER
1 VAL_FLOAT_APP_ACTIVE
–50 VAL_FLOAT_ALWAYS