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Re: How do I get the hot spot from a .cur file in objective c on MAC Cocoa?
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Re: How do I get the hot spot from a .cur file in objective c on MAC Cocoa?


  • Subject: Re: How do I get the hot spot from a .cur file in objective c on MAC Cocoa?
  • From: "Stephen J. Butler" <email@hidden>
  • Date: Sun, 01 Apr 2012 00:34:48 -0500

Wikipedia says that cur/ico files have a very simple format:

http://en.wikipedia.org/wiki/ICO_(file_format)

Part of the ICONDIRENTRY structure is the hotspot information. Should
be pretty easy to write a basic parser.

On Sun, Mar 25, 2012 at 4:25 AM, Oshrat Fahima <email@hidden> wrote:
> Hi
> In our plug-ins we are using cursors kept in a *.CUR file.
> In windows there's no problem to identify the hot spot from the *.CUR file (because it's a WIN file, LoadCursor already knows where is the hot spot automatically).
> But in MAC Cocoa, we've encountered a problem when we create a new NSCursor object in which we must transfer the hot spot to it by calculating it and maintaining it hard coded
> (we prefer not to do that).
> Are you familiar with a method that can help retrieve the hot spot from a given *.CUR file?
> That way we can create the NSCursor directly using this point rather than calculating it ourselves.
>
> Here's a sample of our code.
> Thanks a lot for your time and knowledge
> Oshrat
>
>
> NewCursor(const resContainerRef, const short cursorID, const WTPoint2s hotSpotPoint)
> {
> WTCursorHandle retVal = 0;
>
>      NSCursor* crsr = 0;
>      wvFM::WCStPath imgPath;
>      WTResType resType = "Crsr";
>      wvRM::GetPathToActualFile (resContainerRef, resType, cursorID, imgPath);
>
>      NSString* imgPathAsNSString = 0;
>      imgPathAsNSString = [NSString stringWithFormat:@"%s", imgPath.GetNativePathString().c_str()];
>
>      NSImage * img = [[NSImage alloc]  :imgPathAsNSString];
>      crsr = [[NSCursor alloc]initWithImage:img hotSpot:NSMakePoint(hotSpotPoint.m_x,hotSpotPoint.m_y)];
>
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References: 
 >How do I get the hot spot from a .cur file in objective c on MAC Cocoa? (From: Oshrat Fahima <email@hidden>)

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