[lazarus] Editor

Baeseman, Cliff Cliff.Baeseman at greenheck.com
Tue Oct 19 14:27:10 EDT 1999


I am trying to figure out the correct way to send this procedure to the
lazqtlib. I am getting a crash inside of the C++ library trying to call back
the pascal routine. If this is the case and it is a address and not a
pointer to an address then I know what is going on. The library is looking
for a pointer to an address..

  EventHook(char *WidgetID, void *procpointer) I then have to cast this in
the library
back to an address and attach it to the appropriate object in the internal
widget stack. I get either a access violation or illegal instruction.

Cliff

-----Original Message-----
From: Shane Miller [mailto:SMiller1 at stvgb.org]
Sent: Tuesday, October 19, 1999 1:18 PM
To: lazarus at miraclec.com
Subject: RE: [lazarus] Editor


That would be the ADDRESS of the procedure.

Not sure why you would grab the address that way though.  What you should do
it set up a type

TSomeType = procedure (myint : integer); cdecl;

then in your class or var area, define a variable of type TSomeType and
assign it to myproc.
You may be doing it that way for a reason I don't understand though....


Shane


>>> "Baeseman, Cliff" <Cliff.Baeseman at greenheck.com> 10/19/99 01:00PM >>>

Hi gents!


A little pascal question for you all..

If I declare a procedure like this.

procedure myproc(myint: integer);cdecl;
begin
end;


I then reference it like this  @myproc what does this really stand for. It
is my assumption that it is a untyped pointer to the address of myproc.  Is
this assumption
correct?

Cliff




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