You probably shouldn''t use a switch to come up with your decisions. Instead, use if statements for each option.
function(int selection){ if(selection & optionA) //Do whatever for optionA if(selection & optionB) //Do whatever for optionB //Etc, do that for each option.}
This will work if each of your options are independant, ie any combination of options are valid, and you having one option set won''t effect any other options. Doing it this way prevents you from having to figure out the hundreds of combinations associated with with 8 flags. If that''s not the case, then things get a little more complicated depending on what you need.
If optionA is red, and optionB is blue, and having both set is incorrect, then you can just check for whichever option takes precedence, and use else if to check for the second option. That way, only one option will be processed at a time.
If two flags effect one another, then check for both at once:
if( (selection & optionA) && (selection & optionB) ) //do whatever is needed if both options are setelse if(selection & optionA) //do whatever is needed if only A is setelse if(selection & optionB) //do whatever is needed if only B is set
If you have several flags that effect one another, then using switches might be the way to go after all:
//OptionA, optionB, and optionC all effect one another//This strips selection of all flags except the ones we''re interested inint bits = selection & (optionA | optionB | optionC);switch(bits) { case optionA | optionB | optionC: break; case optionA | optionB: break; //etc for all reasonable combinations}
I think that''s basically everything. Hope it helps...
CM
but then Cow_in_the_well took off on me... so Ill post it here...
eliscool: so if you have like "optionA" and "optionB" and say opA is 1 and opB is 2 and so on for several options if you go optionA | optionB is would = 3 which would be optionC so you could then not use it correctly so how do u come up with the values for each?
CoW_In_ThE_WeLl: what is this optionA and optionB you are talking about? variables?
eliscool: yeah #defined ones
CoW_In_ThE_WeLl: #define optionA 1
eliscool: yeah
CoW_In_ThE_WeLl: ok
eliscool: eg like with windows window styles etc...
CoW_In_ThE_WeLl: and your saying you want to do #define optionC optionA | optionB ?
CoW_In_ThE_WeLl: and do you mean "then not use it INcorrectly"?
eliscool: no! like if opA and opB and opC were different and you want a combination of them you could not use opC as opA | opB would be == opC which is meant to be different...
CoW_In_ThE_WeLl: oh i think i know what you mean
eliscool: you would have to spend all day trying to come up with values that fit, it would be hell!
eliscool: I will just assume your typing up an answer 
CoW_In_ThE_WeLl disappears from our realm...
^^ thats where he took off on me so extract what u will and try to come up with an answer for me 
