Open(xxx, MODE_NEWFILE) on CD-ROM doesn't return

alpine9000 · 10 May 2018, 10:46

I have only tried this on FS-UAE so far, as I couldn't work out how to mount an ISO with WinUAE and don't have a CDROM on any of my real Amigas.

Anyway, so I am doing an "Open(xxx, MODE_NEWFILE)" on a file that doesn't exist with "PROGDIR:" as part of the filename.

The call to Open() doesn't fail, just never returns. I really just want to know that I can't write to this file.

Anyone have any idea how to deal with this ?

meynaf · 10 May 2018, 11:06

This can happen if you take over the display and a system requester appears (in your case, should be "volume is write protected").
So either you use an Intuition screen for your display, or you disable system requesters.

alpine9000 · 10 May 2018, 11:30

Quote:

Originally Posted by meynaf

This can happen if you take over the display and a system requester appears (in your case, should be "volume is write protected").
So either you use an Intuition screen for your display, or you disable system requesters.

Ah yeah, that will be the problem. Thanks!

Is there a nice way to disable the system requesters that works back to early (1.3) kickstarts ?

thomas · 10 May 2018, 11:57

Set FindTask(NULL)->pr_WindowPtr to -1.

Don't forget to restore the old value before you leave your program.

alpine9000 · 11 May 2018, 02:11

Quote:

Originally Posted by thomas

Set FindTask(NULL)->pr_WindowPtr to -1.

Don't forget to restore the old value before you leave your program.

This did the trick!

Thanks

10 May 2018, 10:46	#1
alpine9000 Registered User Join Date: Mar 2016 Location: Australia Posts: 881	Open(xxx, MODE_NEWFILE) on CD-ROM doesn't return I have only tried this on FS-UAE so far, as I couldn't work out how to mount an ISO with WinUAE and don't have a CDROM on any of my real Amigas. Anyway, so I am doing an "Open(xxx, MODE_NEWFILE)" on a file that doesn't exist with "PROGDIR:" as part of the filename. The call to Open() doesn't fail, just never returns. I really just want to know that I can't write to this file. Anyone have any idea how to deal with this ?

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10 May 2018, 11:06	#2
meynaf son of 68k Join Date: Nov 2007 Location: Lyon / France Age: 51 Posts: 5,323	This can happen if you take over the display and a system requester appears (in your case, should be "volume is write protected"). So either you use an Intuition screen for your display, or you disable system requesters.

10 May 2018, 11:57	#4
thomas Registered User Join Date: Jan 2002 Location: Germany Posts: 6,985	Set FindTask(NULL)->pr_WindowPtr to -1. Don't forget to restore the old value before you leave your program.

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