Calling a DLL Function

ac667788 · Post by **ac667788** » Wed Apr 01, 2009 12:23 am

How would you guys call this DLL Function

void hesl::version(int *major, int *minor, char **verstr);

I tried the following and the values at *major and *minor are okay but I don't know how to handle char **verstr

Code: Select all

  *major = @major.i
  *minor = @minor.i
  version.s = ""
  *version = @version.s
  CallFunctionFast(*F, *major, *minor, *version)

netmaestro · Post by **netmaestro** » Wed Apr 01, 2009 12:29 am

PeekS(*version) would be my guess.

ac667788 · Post by **ac667788** » Wed Apr 01, 2009 1:01 am

PeekS(*version) gives me the same garbage as before

Deeem2031 · Post by **Deeem2031** » Wed Apr 01, 2009 1:47 am

Try @*version as the last parameter.

ac667788 · Post by **ac667788** » Wed Apr 01, 2009 1:56 am

Changes things a bit but the data at

version
*version
@*version

is still garbage

jack · Post by **jack** » Wed Apr 01, 2009 2:13 am

is the function in the DLL CDECL or STDCALL , maybe try CallCFunctionFast ?

[edit]
try this

Code: Select all

version.s
*ptr
CallFunctionFast(*F, *major, *minor, *ptr) 
version=PeekS(*ptr)

[/edit]

srod · Post by **srod** » Wed Apr 01, 2009 10:44 am

I think you will also need to allocate a buffer first because it looks like the function will write a string directly into this buffer.

Code: Select all

version.s = Space(1024) 
CallFunctionFast(*F, @major, @minor, @version)

Perhaps using CallCFunctionFast() instead as Jack suggested.