DosGetProcAddr

Bindings:  C, MASM 

This call returns a far address to a desired procedure within a dynamic 
link module. 

 DosGetProcAddr     (ModuleHandle, ProcName, ProcAddress) 
 

 ModuleHandle (HMODULE) - input 
    Handle of the dynamic link module. 

 ProcName (PSZ) - input 
    Address of a name string that contains the referenced procedure name. 

    Alternatively, if the selector portion of the pointer is null, the 
    offset portion of the pointer is an explicit entry number (ordinal) 
    within the dynamic link module. 

    DosGetProcAddr for entries within the DOSCALLS module are only 
    supported for ordinal references.  References to the DOSCALLS module 
    by name strings are not supported and return an error.  Dynamic link 
    ordinal numbers for DOSCALLS routines are resolved by linking with 
    DOSCALLS.LIB. 

 ProcAddress (PFN FAR *) - output 
    Procedure address. 

 rc (USHORT) - return 
    Return code descriptions are: 

    0         NO_ERROR 
    6         ERROR_INVALID_HANDLE 
    95        ERROR_INTERRUPT 
    127       ERROR_PROC_NOT_FOUND 
 
 Remarks 

 A 32-bit address, consisting of a selector and offset, is returned for a 
 specified procedure. 

 To free the dynamic link module, issue DosFreeModule. After DosFreeModule 
 is issued, procedure entry addresses returned for this handle or no 
 longer valid. 

 Other run-time dynamic link calls are DosLoadModule, DosGetModName, and 
 DosGetModHandle.