How do I create a HDC in an ATL Server

hi , i'am argentinian , excuse my English. but i need help please

i need create a HDC in ATL server , (i use vc++ 2003) . but i'cant , now I'm doing a CWindow for draw ,but it must be hidden , this is not possible .

and creating direct HDC with the API (createDC) does not work

please i need some help , anything .


thank you very much in advance
excuse my English.