Re: Drag & Drop Problem

[Andreas Höschler]

Hoi Fred,

> > Mac OS X behaves differently here. The drop works with a pressed
> > Ctrl-Key. What exactly does a pressed Ctrl-Key mean to GNUstep?
>
> Control changes the operation to link, see _updateOperationMask: in
> GSDragView.m:
>
>   if (mod & NSControlKeyMask)
>     {
>       operationMask = NSDragOperationLink;
>     }
>
> You may influence this behaviour by implementing
> ignoreModifierKeysWhileDragging on your dragging source.
>
> It is also possible that you see the wrong cursor due to the code in
> _setCursor not being able to determine, which action you want. This is
> rather probable, as the code there is programmed optimistically.

Thanks! After implementing

- (BOOL)ignoreModifierKeysWhileDragging
{
   return YES;
}

in my calenderview it worked (like on MacOSX). I will really have to 
look into this operationMask issue again as soon as time allows it. I 
expect potential to implement things nicer in my code and more OPENSTEP 
like. For now I have to live with the current approach (initiating drag 
with Ctrl and ignoring modifier keys while dragging).

Thanks a lot,

  Andreas