Eclipse Community Forums: Standard Widget Toolkit (SWT)

Help

Home

Home » Eclipse Projects » Standard Widget Toolkit (SWT) » Mouse cursor

Show: Today's Messages :: Show Polls :: Message Navigator

Mouse cursor [message #445230]

Fri, 29 October 2004 09:57

Henrik Skovgaard

Messages: 84
Registered: July 2009

Member

Hi!

I have an application where I change the mouse cursor to SWT.CURSOR_WAIT
while information is being gathered from a database. When the retrieval is
done, I'm setting the cursor to SWT.CURSOR_ARROW. But after this is done,
the cursor does not change look when I for example hoover the cursor over a
Sash. Question is, how do I reset the cursor to 'default' behaviour ?

Thanks.

/Henrik

Report message to a moderator

Re: Mouse cursor [message #445255 is a reply to message #445230]

Fri, 29 October 2004 18:03

Steve Northover

Messages: 1636
Registered: July 2009

Senior Member

In which widget are you changing the cursor?

"Henrik Skovgaard" <hsk@reklamedata.dk.no.spam> wrote in message
news:clt471$php$1@eclipse.org...
> Hi!
>
> I have an application where I change the mouse cursor to SWT.CURSOR_WAIT
> while information is being gathered from a database. When the retrieval is
> done, I'm setting the cursor to SWT.CURSOR_ARROW. But after this is done,
> the cursor does not change look when I for example hoover the cursor over
a
> Sash. Question is, how do I reset the cursor to 'default' behaviour ?
>
> Thanks.
>
> /Henrik
>
>

Report message to a moderator

Re: Mouse cursor [message #445268 is a reply to message #445255]

Mon, 01 November 2004 07:53

Henrik Skovgaard

Messages: 84
Registered: July 2009

Member

"Steve Northover" <steve_northover@ca.ibm.com> wrote in message
news:clu0kq$ito$1@eclipse.org...
> In which widget are you changing the cursor?

I'm changing it on the Shell.

/Henrik

Report message to a moderator

Re: Mouse cursor [message #445275 is a reply to message #445268]

Mon, 01 November 2004 14:31

Steve Northover

Messages: 1636
Registered: July 2009

Senior Member

If you disable the shell then set the cursor, it will change for every
control in the shell. The way that cursors work is that if a control
defines a cursor, that cursor is used. Otherwise, the inherited cursor is
used. When a control is disabled, the cursor of the parent is used.

"Henrik Skovgaard" <hsk@reklamedata.dk.no.spam> wrote in message
news:cm4q1p$j2f$1@eclipse.org...
>
> "Steve Northover" <steve_northover@ca.ibm.com> wrote in message
> news:clu0kq$ito$1@eclipse.org...
> > In which widget are you changing the cursor?
>
> I'm changing it on the Shell.
>
> /Henrik
>
>

Report message to a moderator

Re: Mouse cursor [message #445278 is a reply to message #445275]

Mon, 01 November 2004 15:02

Henrik Skovgaard

Messages: 84
Registered: July 2009

Member

"Steve Northover" <steve_northover@ca.ibm.com> wrote in message
news:cm5hc5$i4v$1@eclipse.org...
> If you disable the shell then set the cursor, it will change for every
> control in the shell. The way that cursors work is that if a control
> defines a cursor, that cursor is used. Otherwise, the inherited cursor is
> used. When a control is disabled, the cursor of the parent is used.

I have a table I fill data into, and while waiting for the database
containing the data, I want to show a waiting cursor. So should I add the
cursor to the table or what? And after the table has been updated, what do I
do then? Should the entire table be redrawn in order to 'reset' the cursor
to standard behavior? I'm not sure I understand you completely...

/Henrik

Report message to a moderator

Re: Mouse cursor [message #445326 is a reply to message #445278]

Tue, 02 November 2004 15:22

Steve Northover

Messages: 1636
Registered: July 2009

Senior Member

Is the table being filled from a background thread or from the UI thread?

"Henrik Skovgaard" <hsk@reklamedata.dk.no.spam> wrote in message
news:cm5j5k$llg$1@eclipse.org...
>
> "Steve Northover" <steve_northover@ca.ibm.com> wrote in message
> news:cm5hc5$i4v$1@eclipse.org...
> > If you disable the shell then set the cursor, it will change for every
> > control in the shell. The way that cursors work is that if a control
> > defines a cursor, that cursor is used. Otherwise, the inherited cursor
is
> > used. When a control is disabled, the cursor of the parent is used.
>
> I have a table I fill data into, and while waiting for the database
> containing the data, I want to show a waiting cursor. So should I add the
> cursor to the table or what? And after the table has been updated, what do
I
> do then? Should the entire table be redrawn in order to 'reset' the cursor
> to standard behavior? I'm not sure I understand you completely...
>
> /Henrik
>
>

Report message to a moderator

Re: Mouse cursor [message #445342 is a reply to message #445326]

Wed, 03 November 2004 13:46

Henrik Skovgaard

Messages: 84
Registered: July 2009

Member

"Steve Northover" <steve_northover@ca.ibm.com> wrote in message
news:cm88nu$b9o$1@eclipse.org...
> Is the table being filled from a background thread or from the UI thread?

It's being filled from a UI thread.

Report message to a moderator

Re: Mouse cursor [message #445346 is a reply to message #445342]

Wed, 03 November 2004 14:50

Steve Northover

Messages: 1636
Registered: July 2009

Senior Member

So input is blocked to the shell while the table is filling because the UI
thread is filling the table, not reading and dispatching events. You should
set the cursor in the shell and disable the shell while the operation is
running then enable the shell and restore the cursor. If you can't get it
to work, I'll make you a snippet.

"Henrik Skovgaard" <hsk@reklamedata.dk.no.spam> wrote in message
news:cmanfj$l81$1@eclipse.org...
>
> "Steve Northover" <steve_northover@ca.ibm.com> wrote in message
> news:cm88nu$b9o$1@eclipse.org...
> > Is the table being filled from a background thread or from the UI
thread?
>
> It's being filled from a UI thread.
>
>

Report message to a moderator

Re: Mouse cursor [message #445357 is a reply to message #445346]

Thu, 04 November 2004 08:55

Henrik Skovgaard

Messages: 84
Registered: July 2009

Member

"Steve Northover" <steve_northover@ca.ibm.com> wrote in message
news:cmar7j$u3p$1@eclipse.org...
> So input is blocked to the shell while the table is filling because the UI
> thread is filling the table, not reading and dispatching events. You
> should
> set the cursor in the shell and disable the shell while the operation is
> running then enable the shell and restore the cursor. If you can't get it
> to work, I'll make you a snippet.

How do I restore the cursor? As far as I can see, there is no getCursor
method available?

Would be happy to see an example :-) Thanks.

/Henrik

Report message to a moderator

Re: Mouse cursor [message #445382 is a reply to message #445357]

Thu, 04 November 2004 18:03

Steve Northover

Messages: 1636
Registered: July 2009

Senior Member

Set to "null". That will restore the default cursor. There is no
getCursor() method because it's not possible to query the default cursor on
some platforms. For example, text widgets often use an i-beam (motif
doesn't) but there's no API to query the this.

Still need the snippet?

"Henrik Skovgaard" <hsk@reklamedata.dk.no.spam> wrote in message
news:cmcqp0$osd$1@eclipse.org...
>
> "Steve Northover" <steve_northover@ca.ibm.com> wrote in message
> news:cmar7j$u3p$1@eclipse.org...
> > So input is blocked to the shell while the table is filling because the
UI
> > thread is filling the table, not reading and dispatching events. You
> > should
> > set the cursor in the shell and disable the shell while the operation is
> > running then enable the shell and restore the cursor. If you can't get
it
> > to work, I'll make you a snippet.
>
> How do I restore the cursor? As far as I can see, there is no getCursor
> method available?
>
> Would be happy to see an example :-) Thanks.
>
> /Henrik
>
>

Report message to a moderator

Re: Mouse cursor [message #445403 is a reply to message #445382]

Fri, 05 November 2004 08:12

Henrik Skovgaard

Messages: 84
Registered: July 2009

Member

"Steve Northover" <steve_northover@ca.ibm.com> wrote in message
news:cmdqsb$60v$1@eclipse.org...
> Set to "null". That will restore the default cursor. There is no
> getCursor() method because it's not possible to query the default cursor
> on
> some platforms. For example, text widgets often use an i-beam (motif
> doesn't) but there's no API to query the this.
> Still need the snippet?

Doh! :-) No.. thanks I got it now.. How silly I didn't figure that out!

/Henrik

Report message to a moderator

Previous Topic:	Why StyledText dose not word-wrap in SWT3.0
Next Topic:	Help needed on FormAttachment

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Fri Apr 26 21:24:29 GMT 2024

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter