#212 Problem with drag & drop grabbing X

[Bernhard Walle]

In the file open dialog if I select a text in the text
box below and try to drag this text with middle click,
X grabs the mouse.

The only way to solve the problem without restarting X
was Ctrl+Alt+F1, kill xdvi and xlock which grabs the
mouse and releases the old grab.

The problem doesn't exist in other file open dialogs of
Motif applications such as NEdit oder ddd.

[Stefan Ulrich]

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OK, I can reproduce that. It seems to be a problem with the
XtAppProcessEvent() loop which xm_filesel.c uses to get the
returned filename. Getting rid of that will require some
rewrites of the file selection code.

[Bernhard Walle]

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Is it not possible to disable drag&drop in the file selector
at all?

[Stefan Ulrich]

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> Is it not possible to disable drag&drop in the file selector
> at all?

Good idea - I didn't think of that! After doing a quick web
search and checking the Motif FAQ, it seems that this can be
only changed for the entire application in a `clean' way (at
least for Motif 1.x, may be different for 2.x). But since
xdvi doesn't use drag&drop anyway, I guess it won't do any
harm. I've now implemented this in 22.79-CVS14 (CVS HEAD and
xdvik_STABLE; please note the possible delay of up to 5
hours for SF anonymous CVS).

It should have the same effect as setting the following in
your ~/.Xdefaults:

XDvi*dragInitiatorProtocolStyle: XmDRAG_NONE
XDvi*dragReceiverProtocolStyle: XmDRAG_NONE

[Bernhard Walle]

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Very good, this fixes the problem for me. :)