Get just B as int from RGB??

[jcarr]

What i am doing is opening a choosecolor() dialog then from the colour the user selects i want to just pick out the BLUE value, and convert it to a integer...

Can someone help?
This is what i have so far...:

Code Select Expand

CHOOSECOLOR cc;
COLORREF done;
cc.lStructSize = sizeof(CHOOSECOLOR);
cc.hwndOwner = hwnd;
cc.rgbResult = done;
cc.Flags = CC_SOLIDCOLOR;

ChooseColor(&cc);

Thanks in advance

~~Jden

[TimoVJL]

With macro:

Code Select Expand


BYTE b = GetBValue(done);


[jcarr]

Hmmm... ok i see what you mean... Am i able to then say multiply thay number as a BYTE? or do i have to convert first to INT..??

~~Jden

[frankie]

Just store the result in a int variable and the compiler will automatically converti it to int.

[jcarr]

Ok thanks ill try it and if it doesnt work, im right back here

~~Jden/Zyotah

[jcarr]

Code Select Expand

CHOOSECOLOR cc;
COLORREF done;
cc.lStructSize = sizeof(CHOOSECOLOR);
cc.hwndOwner = hwnd;
cc.rgbResult = done;
cc.Flags = CC_SOLIDCOLOR;

ChooseColor(&cc);

//BYTE b = GetBValue(done);
int b = GetBValue(done);
char f[10];
_itoa(b, f, 10);
notice(f);
That is what i put in... No matter what colour i choose, 'b' and 'f' become 0...
btw notice(char) is just a shorter messageboxa() function i made... its not thats the porb

~~Jden

[TimoVJL]

b = GetBValue(cc.rgbResult);

[jcarr]

So now that that works... i have run into a problem with the CHOOSECOLOR dialog. When i hit 'Ok' it comes up with that message that it has to close, sorry for the BEEPING inconvenience....
heres me code:

Code Select Expand

CHOOSECOLOR cc;
cc.lStructSize = sizeof(CHOOSECOLOR);
cc.hwndOwner = hwnd;
cc.Flags = CC_SOLIDCOLOR| CC_FULLOPEN;
ChooseColor(&cc);
notice("done");

That "done" notice never appears... It errors right before that...

~~Jden

[MikeH]

Try adding:

static COLORREF custcolors[16];
cc.lpCustColors = custcolors;

[jcarr]

Thanks it works now