DosQueryResourceSize returns the size of the specified resource object.

Resource objects are read-only data objects that can be accessed dynamically at run time. The access key is two numbers. The first number is a type ID; the second, a name ID. These are similar to the file-extension and file-name portions of a file name.

Resource objects are placed into an executable file by the Resource Compiler (RC.EXE).

This function obtains the size of resources loaded from 16-bit executable files or dynamic link libraries (DLLs), since the size is not explicitly stored in most resources.