Applies To:
  • CitectSCADA 5.xx
Summary:
After calling PageTrend() on a trend page, I click on the display window to show the cursor. On the second occasion that I am calling PageTrend() on my TrendPage, I am finding that the trend cursor disappears and that I cannot get it back when I try to set it again. A hardware alarm is generated (Bad Handle Specified at AN30).

How can I get around this problem?

 

Solution:
Before calling PageTrend(), call TrnDelete() first all the time. This clears the animation object.

Example

TrnDelete(30);
PageTrend("TrendPage", "Trend1", "Trend2");

 
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