Article View: comp.windows.ms.programmer
Article #2905Re: Dynamic Run-Time import with C++
From: CADSI
Date: Mon, 27 May 1991 23:38
Date: Mon, 27 May 1991 23:38
34 lines
1814 bytes
1814 bytes
From article <1991May27.123911.3813@waikato.ac.nz>, by iam@waikato.ac.nz (Ian McDonald):
> I'm trying to call a DLL routine dynamically (ie using a LoadLibrary) but I am
> having difficulty because of C++ type checking. In C you can go :
>
> (*lpFunc) ((LPSTR) Buffer,512);
>
> for example if lpFunc is of type FARPROC. (This is taken from page 20-33 of
> the SDK Guide to Programming). With C++ it will not let me do this because of
> the type checking. I have tried (and failed) to make a typedef to do this
> although I am not too experienced with typedef. Could somebody help me out by
> showing me a way to have a typedef equivalent to FARPROC but allows parameters
> (defined in advannce) or do a typecast to use FARPROC properly.
CHEAP Example:
{
FARPROC lpfn = (FARPROC)lpFunc;
(*lpfn)((LPSTR)Buffer, 512);
}
Otherwise, just typedef the call inline:
(*((FARPROC)lpFunc))((LPSTR)Buffer, 512);
Both should work.
|----------------------------------------------------------------------------|
|Tom Hite | The views expressed by me |
|Manager, Product development | are mine, not necessarily |
|CADSI (Computer Aided Design Software Inc. | the views of CADSI. |
|----------------------------------------------------------------------------|
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rpi!think.com!zaphod.mps.ohio-state.edu!wuarchive!uunet!zephyr.ens.tek.com!uw-beaver!milton!sumax!polari!rwing!seaeast!sunbrk!Usenet From: CADSI@sunbrk.FidoNet.Org (CADSI) Newsgroups: comp.windows.ms.programmer Subject: Re: Dynamic Run-Time import with C++ Message-ID: <675432063.17@sunbrk.FidoNet> Date: 27 May 91 23:38:08 GMT Sender: Usenet@sunbrk.FidoNet.Org Lines: 34