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Get file size given a pointer to the filename, you can use this macro for inline get filesize in the WIN32_FIND_DATA structure using the FindFirstFile and FindClose API's.

shoorick
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you can use this macro for inline get filesize. _name should be a pointer to filename (do not use wildcards!). when fail - ZF will on. on success: edx:eax is value. fasm syntaxis.
CODE

macro file_size _name
{
   local .fz
   push ebp
   mov ebp,esp
   sub esp,140h
   invoke FindFirstFile,_name,esp
   cmp eax,INVALID_HANDLE_VALUE
   pushf
   je .fz
   invoke FindClose,eax
   mov edx,[esp + WIN32_FIND_DATA.nFileSizeHigh + 4]
   mov eax,[esp + WIN32_FIND_DATA.nFileSizeLow  + 4]
.fz:
   popf
   mov esp,ebp
   pop ebp
}

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