Re: ctrl-mouse drag does not work

[Fred Kiefer]

> Am 11.05.2020 um 20:42 schrieb Andreas Höschler via Discussion list for the 
> GNUstep programming environment <discuss-gnustep@gnu.org>:
> 
> 
> I usually start a drag operation with ctrl-drag in my apps. I just realised 
> that this (no longer) works under GNUstep. Instead a context menu is raised!? 
> I first thought this was due to a WindowMaker setting. But I see the same 
> behaviour under xfce. Has this changed in GNUstep over the years? On MacSOX 
> and with the old GNUstep tree (we were using years ago) we could happily use 
> Ctrl-left-mouse-down and then drag to initiate a drag operation. Can this be 
> reenabled somehow (may be with a global default) in the current GNUstep 
> release?

I am not using Drag&Drop that much in GNUstep. This might be because I 
implemented it and still feel bad about it. But the basic principles haven’t 
changed since your version of GNUstep. For GNUstep itself no modifier key is 
required to start a drag operation pressing the left mouse button (which may of 
course be redefined to the right or any other one) of the mouse and moving the 
mouse a bit should start this. Of course specific views may require additional 
keys to be press to start specific operations. Gorm uses this when creating 
connections between elements. Gorm is really the best place to start testing 
D&D with GNUstep as this gets used a lot there. And there it is also easy to 
see when a Window Manager steals a specific key combination. In that case you 
will have to either reconfigure your WM or define different modifiers in 
GNUstep. For GNUstep the simplest way to redefine modifiers keys is in 
SystemPreferences.

If you have further questions please feel free to give me a direct call 
(telephone or Skype). Just send me a private email if you lost my contact 
numbers.

Cheers,
Fred