It might be handy if the increment and decrement arrows on Numeric controls (as well as numeric cells in Table controls) had the option to increment and decrement by a percentage of the control's value, rather than just a fixed value. Basically, I'm finding that I'm doing this type of thing quite a bit:
SetCtrlVal(panel, control, value);
SetCtrlAttribute(panel, control, ATTR_INCR_VALUE, fabs(0.01 * value));
This makes it so that the increment/decrement arrows on the control, when operated by the user, will change the control's value by a certain percentage of the control's value, rather than some fixed number. It would be handy if there was some way to automate this more, in the sense that the user interface could handle this for the programmer. I envision something along the lines of a new attribute like ATTR_INCR_TYPE where the programmer could set this to something like VAL_FIXED (for a fixed increment, as it behaves now), or VAL_PERCENT (the new proposed behaviour), and ATTR_INCR_VALUE would be either the fixed value, or the percentage. Or perhaps someone else may have a better idea on how to implement this. This would be especially handy for Table controls, where now I must loop through all the numeric cells on the table and set each increment value individually.
Also, note the fabs() above in the SetCtrlAttribute() line. This is needed as I get a library error if I try and set the increment value to a negative. Is there any reason that a value like -10.0 couldn't just be interpreted as 10.0 when setting the increment value?
Thanks.
