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QuestionCalling unmanaged DLL-methodes (winmm.dll) Pin
J. Holzer5-Aug-07 20:32
J. Holzer5-Aug-07 20:32 
Hi!

I'd like to attach to winmm.dll from C# (VS2005) and translated a few DLLImports from a very old VB6-Code i found on the internet. Some methods have callbacks and i don't know how to translate them.
The methods look like this:

public static extern int midiInOpen(ref int lphMidiIn, int uDeviceID, int dwCallback, int dwInstance, int dwFlags);

and

public void MidiIN_Proc(long hmIN, long wMsg, int dwInstance, int dwParam1, int dwParam2)


The method should somehow work like this:
midiInOpen(ref hMidiIN, mMPU401IN, <callback> 0, CALLBACK_FUNCTION);

The problem is, that in the original version dwInstance and dwCallback are pointers to methods. Unfortunately i have no clue how to use these DLL-calls in C#.

Can anybody tell me how to do these DLL-calls or provide some example-code=

Thanx a lot!

J.
AnswerRe: Calling unmanaged DLL-methodes (winmm.dll) Pin
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