ProcessDrawEvents
int ProcessDrawEvents (void);
Purpose
When your program executes in a callback function or in code that does not call RunUserInterface or GetUserEvent, LabWindows/CVI does not update the user interface. Functions that are overly time-consuming can "lock out" user interface updates. To allow LabWindows/CVI to process these updates, call ProcessDrawEvents.
If you call this function in a multithreaded program, only the panels created in the current thread are guaranteed to be updated fully.
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Note LabWindows/CVI automatically updates the user interface in GetUserEvent or when a callback returns. |
Parameters
None.
Return Value
| Name | Type | Description |
| status | int | Return value indicating whether the function was successful. A negative number indicates that an error occurred. |
Additional Information
Library: User Interface Library
Include file: userint.h
LabWindows/CVI compatibility: LabWindows/CVI 3.0 and later
Examples
Refer to the following examples that use the ProcessDrawEvents function:
- userint\DigGraphDAQmx.cws
Open example - userint\GraphAnnotations.cws
Open example - userint\GraphZooming.cws
Open example