Path: utzoo!attcan!uunet!lll-winken!lll-tis!ames!mailrus!iuvax!pur-ee!pur-phy!sho
From: sho@pur-phy (Sho Kuwamoto)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Highlight "OK" buttons
Keywords: Dialogs
Message-ID: <1394@pur-phy>
Date: 8 Sep 88 16:08:49 GMT
References: <3316@homxc.UUCP> <16727@apple.Apple.COM> <27471@think.UUCP> <3186@tekig4.TEK.COM>
Reply-To: sho@newton.physics.purdue.edu.UUCP (Sho Kuwamoto)
Organization: Purdue Univ. Physics Dept., W. Lafayette, IN
Lines: 52

In article <3186@tekig4.TEK.COM> bradn@tekig4.TEK.COM (Bradford Needham) writes:
>I used to avoid highlighting default buttons because it seemed so complex.
>Now I let the Dialog Manager handle button highlighting.  Here's how:
>
>	In MacDraw, draw a thick-lined round-cornered rectangle.
>	Select the rectangle and copy it to the clipboard.
>
>	In ResEdit, paste your clipboard into a new PICT resource.
>	Create a new PICT element in your dialog, giving your newly created
>	PICT as the resource to show.
>	Edit the rectangle of the new dialog element so it outlines
>	your default button.
>    
>	Now when you display the dialog, the Dialog Manager will draw the
>	PICT rectangle that outlines your default button.
>
Here is what I do to hilight buttons.  It's not pretty, but it sort of
works.  Install it as a userItem which is big enough to cover all the
buttons you might want to hilight, and set oldItem=0 and whichItem to
whatever you want hilighted.  If you want to hilight a different
button, change whichItem and call an invalRect, or call the routine
directly if you want to avoid redreawing the buttons themselves.  The
reason I do this is because in maybe half of my dialogs, I ask the
user for input, and I want Cancel selected if there is no input in the
appropriate EditText items.  Cheers.

pascal void OutlineButton(theWindow, itemNo)
WindowPtr theWindow;
short itemNo;
{
	pnState savePen;
	short	type;
	Handle	ignore;
	Rect	box;
	
	GetPenState(&savePen);
	PenSize(3,3);
/* don't need to erase the old one if it is the same, or if it doesn't exist */
	if(oldItem > 0 && oldItem != whichItem){
		PenPat(&white);
		GetDItem(theWindow, oldItem, &type, &ignore, &box);
		InsetRect(&box, -4, -4);
		FrameRoundRect(&box, 16, 16);
	}
/* need to draw the new one even if it is the same, because of update evts. */
	PenPat(&black);
	GetDItem(theWindow, whichItem, &type, &ignore, &box);
	InsetRect(&box, -4, -4);
	FrameRoundRect(&box, 16, 16);
	
	oldItem = whichItem;
	SetPenState(savePen);
}