Hi Shankari,
[...] In fact I dont bother about how my C function
prototype looks like as it can choose not to use any
arguments passed to it.
It won't work on Win32, unless you switch to cdecl prototypes.
My C# function does a Dll import like
[DllImport(...)]
static extern void func (param1, param2);
Under normal cases, I would call func(param1,param2)
from C#.
But I want to set a flag during this. So, I thought of
doing it like this.
The C function implementation remains as it is. But
Dll import is changed to
[DllImport(...)]
static extern void func (flag, param1, param2);
C# invocation : func(flag,param1,param2)
Why so complicated?
Define the C DllImport to match its real parameter list:
[DllImport(...)]
static extern void func (param1, param2);
Then define a C# method that takes your additional flag:
public static void func (flag,param1,param2)
{
// do something with "flag"
...
// call the dll import
func (param1, param2);
}
Rob
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