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Re: Can't click on StandardAlert button

Subject: Re: Can't click on StandardAlert button
From: "Gary L. Wade" <email@hidden>
Date: Fri, 02 Nov 2007 09:45:46 -0700
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Behavior like that happens in applications, at best, if you launch the alert from a thread that's not the main thread. If that's the case, there's not anything you really can do about that other than rewriting your code to bring up the alert within your main thread, typically via some CarbonEvent posting.

Also, you need to make your message and explanation strings to be Pascal
strings, not C-strings.  Pascal strings are explicitly unsigned character
arrays (the zeroth byte goes from 0 to 255 for the length of the string), so
you wouldn't need to do the typecast you're doing in your call.  If you're not
familiar with that method of declaration, this is how it would be:

    unsigned char *alert1 = "\p Licence file cannot be found.  ";
    unsigned char *alert2 = "\p Please obtain a licence file.  ";

Quoting "J.P. Pellet" <email@hidden>:

I am porting an old application based on the YAAF multi-platform framework to Carbon. It displays an alert using StandardAlert; however, I can't click on the OK button and I have to kill the application.

Here is a piece of code that exhibits exactly the same behavior.
#include <Carbon/Carbon.h>
int main (int argc, char * const argv[]) {
	SInt16 out;
	char *alert1 = " Licence file cannot be found.  ";
	char *alert2 = " Please obtain a licence file.  ";
	StandardAlert (kAlertNoteAlert,
				   (constunsignedchar *) alert1,
				   (constunsignedchar *) alert2,
				   NULL,
				   &out);
	printf("response: %i\n", 5, out);
	return 0;
}
I saw in a previous post (http://lists.apple.com/archives/printing/2003/Nov/msg00047.html ) that it is a problem with "with user and bootstrap context". Unfortunately, that doesn't tell me much, and my app does have to display such warning dialogs. Anything I'm doing wrong? I'm quite new to Carbon.

TIA, J.P. _______________________________________________ Do not post admin requests to the list. They will be ignored. Carbon-dev mailing list (email@hidden) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/carbon-dev/email@hidden
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References:
	>Can't click on StandardAlert button (From: "J.P. Pellet" <email@hidden>)

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