Article View: borland.public.cppbuilder.nativeapi
Article #17127Re: Import functions from gll by index.
From: user
Date: Mon, 07 Apr 2003 04:28
Date: Mon, 07 Apr 2003 04:28
47 lines
2272 bytes
2272 bytes
Mariusz Grecki wrote:
> It is a shame, but I can not import a function from
> kernel32.dll by index. Using the name it is possible
> but by index GetProcAddress fails returning NULL.
> What I am doing wrong?
>
> Example:
> =================================
> HINSTANCE hlk32;
> FARPROC LoadLibrary16;
> FARPROC FreeLibrary16;
> FARPROC GetProcAddress16;
> FARPROC BeepA, BeepB;
>
> .............
> hlk32=LoadLibrary("kernel32");
>
> BeepB=GetProcAddress(hlk32, (LPSTR)10);
> BeepA=GetProcAddress(hlk32, "Beep");
> ...........
> FreeLibrary(hlk32);
> ================================
> BeepA is OK.
> BeepB is NULL!
>
> Any comments?
The ordinal for Beep is 13 in my KERNEL32.DLL. I was able to get the
following code to work as expected (both BeepA and BeepB had the same
value):
void __fastcall TForm1::Button1Click(TObject *Sender)
{
typedef BOOL (WINAPI * BeepProc)(DWORD, DWORD);
HINSTANCE hlk32;
BeepProc BeepA, BeepB;
hlk32=LoadLibrary("kernel32");
BeepB=(BeepProc)GetProcAddress(hlk32, MAKEINTRESOURCE(13));
BeepA=(BeepProc)GetProcAddress(hlk32, "Beep");
BeepB(100, 100);
BeepA(200, 100);
FreeLibrary(hlk32);
}
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