Compilation warnings C4311 and C4302 from type casting between 'void *' and DWORD.

[robertbjarum]

We are getting 'type cast' warnings on casting between 'void *' and 'DWORD' when compiling for x64.. Is this a known issue that can be ignored?

[robertbjarum]

Found that sizeof(DWORD) is 4 while sizeof(void *) is 8. DWORD is "typedef unsigned long".