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Using external DLL's

Posted on 1998-10-22
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Last Modified: 2013-11-20
I am quite new to MFC, i usually program in Visual Basic. In VB it is very easy to use external dll's, you just need the dll and you need to know which functions the dll implements. But how do you use external dll's in MFC, do you need the .h and the .lib file for the dll in order to use it in your program?? And does the dll have to be a MFC dll?? I've heard something about LoadLibrary, but wouldn't know exactly how to use it! I mean if you can do it in BV without .h and .lib files surely you can do it MFC without those files! btw, i am using VC++ 6.0!
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Question by:thomasschmidt
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2 Comments
 
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Bridge earned 100 total points
ID: 1323736
HINSTANCE hDLL;               // Handle to DLL
LPFNDLLFUNC1 lpfnDllFunc1;    // Function pointer
DWORD dwParam1;
UINT  uParam2, uReturnVal;

hDLL = LoadLibrary("MyDLL");

if( hDLL != NULL )
{
   lpfnDllFunc1 = (LPFNDLLFUNC1)GetProcAddress(hDLL, "DLLFunc1" );

if( lpfnDllFunc1 )
   uReturnVal = lpfnDllFunc1(dwParam1, uParam2);

FreeLibrary(hDLL);

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Author Comment

by:thomasschmidt
ID: 1323737
somehow this question got posted twice, but i'll give you the points anyway(even though there are errors in the code)!
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