Weird.. the second note I posted (the one about Rus' good point) came up
before the original code snip I posted... at any rate, I was looking in
detail at how to do this again, and realized the snippet probably didn't
explain it well.. so here is my event loop and associated functions:
static Boolean HandleHardKey(char chr)
{
return 0;
}
static int AppPreProcessEvent(EventType *event)
{
// Intercept hard keys to prevent them from switching apps
if (event->eType == keyDownEvent)
{
if ((event->data.keyDown.chr >= hard1Chr &&
event->data.keyDown.chr <= hard4Chr &&
!(event->data.keyDown.modifiers & poweredOnKeyMask)))
{
if (HandleHardKey(event->data.keyDown.chr))
return CMD_DONTHANDLE;
}
if (event->data.keyDown.chr == hardPowerChr ||
event->data.keyDown.chr == autoOffChr)
return CMD_POWEROFF;
if (event->data.keyDown.chr == launchChr)
return CMD_LAUNCHER;
}
return CMD_OK;
}
static void AppPostProcessEvent(int cmd)
{
switch (cmd) {
case CMD_LAUNCHER:
// go to front form of application.. this is for Pre OS 3.0 support
// where the launcher was not a separate application
break;
case CMD_POWEROFF:
// post a stop event to your application
break;
}
}
static void EventLoop(void)
{
EventType event;
Word error;
int precmd;
do {
// Get the next available event.
EvtGetEvent(&event, evtWaitForever);
precmd = AppPreProcessEvent(&event);
if (precmd == CMD_DONTHANDLE) continue;
// Give the system a chance to handle the event.
if (! SysHandleEvent(&event))
// Give the menu bar a chance to update and handle the event.
if (! MenuHandleEvent(CurrentMenu, &event, &error))
// Give the application a chance to handle the event.
if (! ApplicationHandleEvent(&event))
// Let the form object provide default handling of the event.
FrmDispatchEvent(&event);
AppPostProcessEvent(precmd);
} while (event.eType != appStopEvent);
StopApplication();
}
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