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Widget not being displayed [message #448111]

Mon, 03 January 2005 13:45

Kevin Jones

Messages: 2
Registered: July 2009

Junior Member

This is on Windows XP with Eclipse 3.0.

I'm trying to create a Canvas (although I've also seen this with other
widgets), after a Shell has been created and shown. i.e. I create the
shell, enter the event loop, then in response to an event I create a
Canvas as a child of the main shell. When I do this the canvas is not
show, if I cause the shell to re-size (i.e. setBounds or simply resizing
the window) then the Canvas gets its paint event and is shown.

I've tried several things such as calling update and redraw both on the
shell and the canvas but no luck.

If I create the Canvas before showing the shell then all is well.

Can I force the canvas to 'appear' without re-sizing the shell?

Kevin

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Re: Widget not being displayed [message #448112 is a reply to message #448111]

Mon, 03 January 2005 13:53

Charlie Surface

Messages: 40
Registered: July 2009

Member

Try calling layout().

Charlie

Kevin Jones wrote:
> This is on Windows XP with Eclipse 3.0.
>
> I'm trying to create a Canvas (although I've also seen this with other
> widgets), after a Shell has been created and shown. i.e. I create the
> shell, enter the event loop, then in response to an event I create a
> Canvas as a child of the main shell. When I do this the canvas is not
> show, if I cause the shell to re-size (i.e. setBounds or simply resizing
> the window) then the Canvas gets its paint event and is shown.
>
> I've tried several things such as calling update and redraw both on the
> shell and the canvas but no luck.
>
> If I create the Canvas before showing the shell then all is well.
>
> Can I force the canvas to 'appear' without re-sizing the shell?
>
> Kevin

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Re: Widget not being displayed [message #448113 is a reply to message #448112]

Mon, 03 January 2005 14:20

Kevin Jones

Messages: 2
Registered: July 2009

Junior Member

d'oh!

Thanks,

> Try calling layout().
>
> Charlie
>
>
> Kevin Jones wrote:
>
>> This is on Windows XP with Eclipse 3.0.
>>
>> I'm trying to create a Canvas (although I've also seen this with other
>> widgets), after a Shell has been created and shown. i.e. I create the
>> shell, enter the event loop, then in response to an event I create a
>> Canvas as a child of the main shell. When I do this the canvas is not
>> show, if I cause the shell to re-size (i.e. setBounds or simply
>> resizing the window) then the Canvas gets its paint event and is shown.
>>
>> I've tried several things such as calling update and redraw both on
>> the shell and the canvas but no luck.
>>
>> If I create the Canvas before showing the shell then all is well.
>>
>> Can I force the canvas to 'appear' without re-sizing the shell?
>>
>> Kevin

Report message to a moderator

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