Need a way to safely exit program

Question

We need a way to detect if a user close or ends our cvi application prematurely.
I can detect if someone kill the application using task manager.  However if my function completes the program does not end..
How do I get my program to continue once the thread is complete?  The below code shows how I am trying to test this.
#include <ansi_c.h>
#include <utility.h>
#include <userint.h>
int CVICALLBACK EventFunctionName (int panelOrMenuBarHandle, int controlOrMenuItemID, int event, void *callbackData, int eventData1, int eventData2)
if (event==EVENT_END_TASK)
if (ConfirmPopup ("Shut Down Detected", "Power to module turned off")!=1)
return -1;
return 0;
int CVICALLBACK InfinateLoop(void *functionData)
int count = 0;
while (1){
printf("Count is: %d\n", count);
Delay(1.0);
count++;
if(count == 5){
return 1;
return 0;
int main(int argc, char *argv[]){
int functionId;
InstallMainCallback (EventFunctionName, 0, 0); //EVENT_END_TASK
CmtScheduleThreadPoolFunction (DEFAULT_THREAD_POOL_HANDLE, InfinateLoop, NULL, &functionId);
RunUserInterface ();

Answer 1

Hey Malcrow,
I'm not exactly sure what you are trying to do.
Are you trying to allow your program to complete once the user tries to end it?  Or are you just trying to detect that a user is closing the program?
If you want the program to finish, you may need to look into swallowing the event.
Here are some links that may help:
Using Callback Functions to Respond to User Interface Events
EVENT_END_TASK
Swallowing Events
Regards,
Jake G.
National Instruments
Applications Engineer