InternetDial in Threads

[Slippie]

I have the problem that if I use InternetDial with the mainform as Parent handle it stops the program in order to do the dial.

What I want to do is use a thread as its parent handle so that I can still access the rest of the program and it dials in the background.

I tried the following:

InternetDial((PParent as TCommThread).Handle, PChar('MWeb'), INTERNET_AUTODIAL_FORCE_UNATTENDED, @ConnectionID, 0);

It gives an error saying Invalid class typecast.

Any suggestions?

 

[buho]

Try this:

var
HW : THandle;
begin
HW := ((PParent as TCommThread).Handle;
InternetDial(HW, PChar(...), ..., @..., 0);
end;

If the error moves to the line HW := ... check what you are triyng to do with your typecasting.

BTW, InternetDial requires an HWND handle; if (PParent as TCommThread) resolves to a TThread descendent, the handle you are getting is a thread handle, not a window handle.

Anyway, the Internet functions are a real mess, bad documented and poorly written. Better use the RAS directly to make the connection.

buho (A).