My messsage of text is not visible during my program works

I write a program to write a file format to another.

Files are so large that the program works very long. So, I did a message text that show that the program still works.

Initially worked well. But now the text messages is no longer displayed.
I don't know what the problem is.

code:

int CVICALLBACK ReadCallback (int panel, int control, int event,
        void *callbackData, int eventData1, int eventData2)
{
    int iConfiguration;
    switch (event)
    {
        case EVENT_COMMIT:

            SetCtrlAttribute (panelHandle, PANEL_TXTMSG_Load, ATTR_VISIBLE, 1);

            GetCtrlVal (panelHandle, PANEL_Dataset_Conf, &iConfiguration);              Function_Worker(iConfiguration);

            SetCtrlAttribute (panelHandle, PANEL_TXTMSG_Load, ATTR_VISIBLE, 0); 

            break;
        case EVENT_LEFT_CLICK:
            break;
    }
    return 0;
}

The function_worker does nothing with the GUI, but it works with a DLL. Is this a problem?

You have any ideas?

Hello

When your program runs in a callback function or in code that does not call RunUserInterface or GetUserEvent, LabWindows/CVI does not address user interface events. Functions that are too long may "lockout" user interface events. To allow LabWindows/CVI to process events, call ProcessDrawEvents.

Tags: NI Software

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