using functions from schannel.dll

[egmackenzie]

Hi,
I am working on a project which requires me to clear the SsleCache. I have found a way to do this through schannel.dll.
A sample of my code:


typedef BOOL (*EmptyCachePtr)(LPSTR pszTargetName, DWORD dwFlags);

HMODULE hSchannel;
hSchannel = LoadLibrary("TEXT("schannel.dll"));

emptyCache = (EmptyCacheFuncPtr) GetProcAddress(hChannel, "SslEmptyCacheA");

if(emptyCache != NULL)
{
emptyCache(NULL, 0)l
}

FreeLibrary(hSchannel);

The code compiles fine, but then when I run it it appears to run fine untill the end of the method where it moves into code which I can't see and crashes with a memory access error: 0xC0000005: Access violation writing location 0xfffffffd.

If anyone needs more info let me know

So... can anyone help me with why this code bugs out?
Cheers

Ed

[egmackenzie]

Also, some of the time I get an error: A buffer overrun has occurred in .exe which has corrupted the program's internal state. Press break to debug or continue to terminate

[egmackenzie]

FIXED: The problem was in the typedef:

It should not include the variable names.
It should be:
typedef BOOL (WINAPI *EMPTYPTR)(LPSTR, DWORD);

method:
{
.....

emptyPtr = (EMPTYPTR) GetProcAddress(hSchannelDll, TEXT("SslEmptyCacheA"));

BOOL ret = emptyPtr(NULL, 0);
.....
}