Hi,
After upgrading from Meas. Studio 6 to 8.1.1, I've noticed some strange behavior with pointer fills in CNiKnob objects created via a certain sequence. To demonstrate:
1) Open the NI example project "Knob Styles", edit the dialog, and open the property pages for IDC_VERTICAL_KNOB.
2) Change the "Pointer-1" Fill Style to "Fill to Minimum" and its Value to "50".
3) Add a new Pointer, which is automatically named "Pointer-2", and change its Value to "99".
4) Change the "Pointer-1" Fill Style back to "None" and its value to "5".
Notice that the fill only goes down to 50 where it should go down to 0. Even if you click OK, the incorrect fill remains.
An even stranger behavior occurs with a similar sequence:
1) as above
2) as above
3) Change the Style to "Dial".
4) Add a new Pointer, which is automatically named "Pointer-2", and change its Value to "99".
5) Change the "Pointer-2" Fill Style to "Fill to Minimum".
Notice the strange gap in the fill. Now click repeatedly within the "Pointers:" selection box and notice that the fill alternately disappears and reappears with every control update! Even if you click OK and then repeatedly resize the control on the dialog, the fill comes and goes.
I admit that these sequences are odd, but that's what my old app does, and it ran fine under version 6. I wonder if this behavior could be a symptom of a larger problem with version 8.1.1.
Thankfully, I found a work-around. Insert a step between 2 and 3 in either sequence:
2.5) Change the "Pointer-1" Value to "0".
With that, both strange behaviors are avoided, as far as I can tell without lots of testing of different cases.
Claus
