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QueueUserEvent

LabWindows/CVI

QueueUserEvent

int QueueUserEvent (int eventNumber, int panelHandle, int controlID);

Purpose

Inserts a programmer-defined event in the GetUserEvent queue. You can later retrieve the event by calling GetUserEvent.

Event numbers 1,000 to 10,000 are reserved for programmer-defined events. You can assign any meaning you choose to the event number.

Supported Controls

You can use QueueUserEvent with all LabWindows/CVI user interface controls.

Parameters

Input
Name Type Description
eventNumber int An integer value between 1,000 and 10,000 that this function places in the event queue and that you can later retrieve from GetUserEvent.
panelHandle int Specifier for a particular panel that is currently in memory.

You can obtain this handle from functions such as LoadPanel and NewPanel.

Pass 0 when the event does not apply to a particular panel.
controlID int Defined constant, located in the .uir header file, that you assign to the control in the User Interface Editor, or the ID returned by functions such as NewCtrl and DuplicateCtrl.

Pass 0 when the event does not apply to a particular control.

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