CreatePen , how to change color

When i create a pen like CreatePen () , how do i do to change that pens color later ??
using bwc++ 4.02
Write a simple example.
superabbeAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

r parkinsonCommented:
There is no way to change a pen once it is created, however you can accive a similar effect if you use CreatePenIndirect, which takes a structure, and just modify the color parameter (hence maintaining the other attributes).  You can then 'switch' pens with the code :

// Create the first Pen.
hPen=SelectObject(hdc,CreateFontIndirect(&lgpn));

// Change a property of the pen here ...

//create a new pen, select the font to your DC and
//delete the previous pen.  
DeleteObject(SelectObject(hdc,CreateFontIndirect(&lgpn)));

//Delete the selected pen and replace it to the DC with the
//default pen.
DeleteObject(SelectObject(hdc,hPen));

0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
superabbeAuthor Commented:
In my program the pen will change color when WM_MOUSEMOVE occur .
Is it possible that my GDI-res will be way out of control ??
like 1 % left or so ?
.

0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Microsoft Development

From novice to tech pro — start learning today.