GetRValue

Nurbek

Hi,

I want to use GetRValue function which is used in delphi, but in fastreport its giving an error.

How can I use this function?

or How Can I get The Color value from a GradientView, somewhere in the middle there is an indicator, and I need to make the indicator's color same as gradients color at that scale.

gordk

there is a number of ways to do this
1 create a variable in fr with no value, when you use it in the report and it is
encountered by the report engine the external ongetvaLUE EVENT OF FR IS FIRED and
you canpass a value into it from delphi.
see the programmers manual on working with variables.
2 create a custom function to use in fr, see the developers manual
on how to create custom functions
3 create a library of customfunctions and compile them and install them into fr
so they can be seen from the function list

Nurbek

gordk wrote: »

there is a number of ways to do this
1 create a variable in fr with no value, when you use it in the report and it is
encountered by the report engine the external ongetvaLUE EVENT OF FR IS FIRED and
you canpass a value into it from delphi.
see the programmers manual on working with variables.
2 create a custom function to use in fr, see the developers manual
on how to create custom functions
3 create a library of customfunctions and compile them and install them into fr
so they can be seen from the function list

Thank you.
I already solved that, I wrote a function to get R, G, B values from TColor. Calculate the color from from begincolor and endcolor of gradient.

create a library of custom functions - I didn't think about it, thank you, next time I'll do so.