how recover partition from Boot Camp erased with Disk Utility

Hello guys,
I don't know how recover space on mi HD after erase the Boot Camp partition with Disk Utility. I tried erase the Boot Camp partition from Boot Camp application but for some reason it wasn't possible, so I used Disk Utility. I joined the Boot camp space within my Macintosh HD, on my HD specification appears as only one partition but I can't access to this ex-Boot Camp space. Attached a pic of my HD distribution. You can see the ex-Boot Camp space is streaked, indicating it's not able. I will really thank you if someone can help me solve this issue.

Welcome to our forums.

You're going to need to erase the drive and reformat it as one partition. Make sure you backup your data first and that you are able to reinstall OS X. Since you didn't tell us anything about your Mac or which version of OS X you're running, that's all I can advise you for now.

I think you can just drag that resize control (bubble on the perimeter of the circle) to add the free space to the partition.

No. As chscag says a full erase and install. You have to use BootCamp to remove the partition, or if you want to resize it is necessary to use specialised software called CampTune by Two Canoes software.

I already erased and reinstalled OS. I could recover my disk space. Thank you guys.

Yes that is the only way. On creation of a Boot Camp partition instructions are given for uninstall and retrieval of the partition space to Macintosh HD and I seem to recall it expressly states that Disk Utility cannot be used. You must use the Boot Camp uninstaller but I have not tried it on my MBP which is running Windows 10 on a 60Gb partition.
As we cannot guarantee the process will work it is yet another very good reason for having an up to date complete backup.
Congratulations Chimplo for having that.