Handling Program Exit - GameCreators Forum

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anwserman

15

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Joined: 20th May 2011

Location: Wisconsin

Posted: 1st Jul 2011 11:43 Edited at: 1st Jul 2011 11:45

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Ok, this sounds trivial, but it's causing a problem with my app. If I close the game window by hitting the [X] button in the corner, the app shuts down but 'crashes'; it says that the app has encountered an error and needs to close.

However, when the player hits Spacebar - and the app goes through the normal shutdown sequence - the program does not crash.

My code is structured as such:

+ Code Snippet

Init Program
   While SpaceBarHit() = False
       Game Logic 
   End While

Clean Up Sequence
End

I'm using Nuclear Glory, so I think the problem has to do with the system not being able to clean up and exit correctly. Any advice?

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Hodgey

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Joined: 10th Oct 2009

Location: Australia

Posted: 1st Jul 2011 13:00

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Hi, what you could do is run your program in full screen mode or put SET WINDOWS OFF command at the beginning of your program which will run the program at fullscreen which hides the 'X' button at the top.

One other theory I have is to check if your app is running via the EXECUTABLE RUNNING() command and if it equals 0 initiate your clean up sequence. I have no idea if this will work though.

Good luck

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TheComet

18

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Joined: 18th Oct 2007

Location: I`m under ur bridge eating ur goatz.

Posted: 1st Jul 2011 13:01

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There is a way to remove the X from the window, maybe that will help? I'm sure there's also a way to disable the function of the X button, and then redirect it into the code, though I don't know how...

TheComet

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WLGfx

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Joined: 1st Nov 2007

Location: NW United Kingdom

Posted: 1st Jul 2011 16:29

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DBP does tons of cleanup itself, generally there's no need to worry. If you're calling/using dll's then you may have to add the extra cleanup stuff.

The only real cleanup I do is if I am resetting the program and going back to another point in it without exiting and freeing up unused resources.

Warning! May contain Nuts!

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anwserman

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Joined: 20th May 2011

Location: Wisconsin

Posted: 1st Jul 2011 19:20

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@WLGfx
I'm aware of this fact. I'm already taking care of some cleanup when the user programatically exits the program. Everything gets cleaned up and ends normally. HOWEVER, I cannot perform this cleanup when the user [X] out of the window. When this happens, the application crashes.

Thus, that's why I was asking how I can perform these cleanup actions when the user closes the window.

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Max P

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Posted: 1st Jul 2011 20:08

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You can use the BBB Gui plugin. When you start it, the window will not close when you press the [X] button. This way you can manually check if the [X] button is pressed, then do your cleanup and exit the program.

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=PRoF=

23

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Joined: 17th Mar 2003

Location: Milton Keynes, UK

Posted: 1st Jul 2011 20:12

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IanM's Matrix 1 plugin set contains commands to do this.

first bit...

+ Code Snippet

	// for IanM's catch the window close routine
	#constant WM_CLOSE   0x0010

next bit...

+ Code Snippet

	// IanM's Stop the window closing method :)
	set message callback "WndProc"

and then with your functions

+ Code Snippet

//******************************************************************
//	WndProc() - called by IanM's close window bit
//******************************************************************

function WndProc(hwnd as dword, msg as dword, wparam as dword, lparam as dword)
   
	if msg = WM_CLOSE

		stop current message
		
		// Your code here to either clean up or jump to clean up bit		
	endif

endfunction 0

This is how I do it anyway.

Hope that helps