Solved

Using MMSYSTEM in Visual C++

Posted on 1998-03-15
6
1,181 Views
Last Modified: 2008-02-01
I am having trouble using the Windows Multimedia System (waveInOpen and such functions) under Visual C++. The code compiles OK, but does not link. When I try to link I get the following error messages:

RecordDlg.obj : error LNK2001: unresolved external symbol __imp__waveInClose@4
RecordDlg.obj : error LNK2001: unresolved external symbol __imp__waveInReset@4
RecordDlg.obj : error LNK2001: unresolved external symbol __imp__waveInOpen@24
RecordDlg.obj : error LNK2001: unresolved external symbol __imp__waveInAddBuffer@12
RecordDlg.obj : error LNK2001: unresolved external symbol __imp__waveInUnprepareHeader@12
RecordDlg.obj : error LNK2001: unresolved external symbol __imp__waveInPrepareHeader@12
RecordDlg.obj : error LNK2001: unresolved external symbol __imp__waveInStart@4
Debug/Amuse.exe : fatal error LNK1120: 7 unresolved externals
Error executing link.exe.

I understand that the compiler is unable to resolve the external references, probably because there is no import library for the MMSYSTEM.DLL file. How can I solve this problem?
0
Comment
Question by:Slarti
  • 3
  • 2
6 Comments
 
LVL 4

Expert Comment

by:jtwine100697
ID: 1183491
  Add mmsystem.lib to your linker library list.

-=- James.
0
 

Expert Comment

by:larockd
ID: 1183492
James,

Actually you have the wrong library.  The library to be added is
winmm.lib

Below is the information... On the function

waveInStart
 
Windows NT
 Yes
 
Win95
 Yes
 
Win32s
 Yes
 
Import Library
 winmm.lib
 
Header File
 mmsystem.h
 
Unicode
 No
 
Platform Notes
 None
 

0
 
LVL 4

Expert Comment

by:jtwine100697
ID: 1183493
 Yep...  Yer right!   That is what I get for answering when I am not at my development machine... :P

   Slarti, reject my previous answer.  "larockd" deserves the points.

-=- James.
0
Courses: Start Training Online With Pros, Today

Brush up on the basics or master the advanced techniques required to earn essential industry certifications, with Courses. Enroll in a course and start learning today. Training topics range from Android App Dev to the Xen Virtualization Platform.

 
LVL 2

Author Comment

by:Slarti
ID: 1183494
Sorry jtwine.. Of course the first thing I tried was to include mmsystem.lib but the file does not exist. I was not aware that the import library name was listed in the online help of the function, so larockd's answer really deserves the points.

Larockd: Please post a blank answer so I can accept it.
0
 
LVL 4

Expert Comment

by:jtwine100697
ID: 1183495
  That is what I said...  It is not? :P

-=- James.
0
 

Accepted Solution

by:
larockd earned 50 total points
ID: 1183496
Jtwine...

Thanks....

Darrell



0

Featured Post

Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

In days of old, returning something by value from a function in C++ was necessarily avoided because it would, invariably, involve one or even two copies of the object being created and potentially costly calls to a copy-constructor and destructor. A…
This article shows you how to optimize memory allocations in C++ using placement new. Applicable especially to usecases dealing with creation of large number of objects. A brief on problem: Lets take example problem for simplicity: - I have a G…
The viewer will be introduced to the technique of using vectors in C++. The video will cover how to define a vector, store values in the vector and retrieve data from the values stored in the vector.
The viewer will be introduced to the member functions push_back and pop_back of the vector class. The video will teach the difference between the two as well as how to use each one along with its functionality.

813 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

8 Experts available now in Live!

Get 1:1 Help Now