Citrix with Load Runner : ctrx_get_bitmap_value returning different value while image is the same

Question

I am using Micro Focus Load Runner to record / load test a Citrix ICA application.

I use ctrx_get_bitmap_value to wait for a screen to have the expected state.

I tried already ctrx_sync_on_bitmap and got same issue and I read it was buggy:

• https://groups.google.com/forum/#!topic/lr-loadrunner/NKxDbvLz8dw

My problem is that, on the same machine, even if the screenshot looks the same for me, it seems the bitmap hash computed is different.

I read this about the Tolerance feature:

• Citrix Bitmap Sync Tolerance won't work unless set to Exact

But does it really work as per, since reference documentation advises not to use it:

-https://admhelp.microfocus.com/lr/en/12.60/help/WebHelp/Content/VuGen/128450_c_ctirix_replaing_tips.htm#mt-item-6

Note this is not the below issues as I am on same machine:

• https://community.softwaregrp.com/t5/LoadRunner-User-Discussions/ctrx-get-bitmap-value-returns-different-values-between-VuGen-and/td-p/604944

Answer 1

It appears from further tests that:

• The Citrix cluster was load balancing strangely to another server which lead to different bitmaps due to a slight position offset in positionning

• We also had to switch to Windows Classic theme as per :

  • Use Classic Windows Style