MaxSizeRsrc
MaxSizeRsrc Obtain resource size without reading from disk Handle rHandle ; handle of a resource in an open file This returns an approximation of the size of a resource. When loaded from
disk, the resource is guaranteed to be no larger than the return value.
rHandle is a valid resource handle. It is a value obtained via GetResource, Returns: a 32-bit long integer; the maximum amount of memory needed to hold the resource data identified by rHandle if and when that data is
read from disk.
Notes: This function is preferred over SizeResource for checking memory requirements before reading a resource. It gets the size from the resource
map rather than reading the resource file.
The return value may not be the exact size of the resource, since the file
may have been compacted some time after it was opened.
Of course, if the resource is currently in memory, you can use
"loaded" following a SetResLoad (FALSE) call or (possibly) after a purgeable resource has been purged.
Other places to get information about resources not currently not in
memory include: