Hi all-
Sorry for what some will call a newby question. I guess if I were a
better c programmer, I'd know how to do this. :-)
I'm trying to patch a system trap with the following:
UInt32 oldTrap;
static void myPrgUpdateDialog (ProgressPtr prgP, UInt16 err, UInt16 stage,
Char *messageP, Boolean updateNow);
static void myPrgUpdateDialog (ProgressPtr prgP, UInt16 err, UInt16 stage,
Char *messageP, Boolean updateNow) {
if (err) err = 0;
// how to call oldTrap with vars?
PrgUpdateDialog(prgP, err, stage, messageP, updateNow);
}
void MainForm::BeamMeSilent() {
oldTrap = *(UInt32*)SysGetTrapAddress(sysTrapPrgUpdateDialog);
Err error = SysSetTrapAddress(sysTrapPrgHandleEvent, myPrgUpdateDialog);
PDatabase me(NULL, 'appl', Creator(), false);
me.Beam();
error = SysSetTrapAddress(sysTrapPrgHandleEvent, oldTrap);
}
of course the call to PgrUpdateDialog within myPrgUpdateDialog will
just cause an infinite loop. I've got the address of the old trap in
oldTrap, how do I push all my variables on the stack and then
execute at that oldTrap address?
Thanks,
Ted
[EMAIL PROTECTED]
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