Change image upon mouse hover

Change image upon mouse hover

[Yuan Fu]

I have these two images:

I want to change the left one to the right one when mouse hovers over 
it. Is it possible? What's the best way to do it?


Yuan

Re: Change image upon mouse hover

[Eli Zaretskii]

> Date: Mon, 4 Dec 2023 21:44:13 -0800
> From: Yuan Fu <casouri@gmail.com>
> 
> I have these two images:
> 
> I want to change the left one to the right one when mouse hovers over 
> it. Is it possible? What's the best way to do it?

Did you try to use the help-echo text property?  Its value can be a
function, see "Special Properties" in the ELisp manual.

Re: Change image upon mouse hover

[Yuan Fu]

On 12/5/23 5:00 AM, Eli Zaretskii wrote:
>> Date: Mon, 4 Dec 2023 21:44:13 -0800
>> From: Yuan Fu <casouri@gmail.com>
>>
>> I have these two images:
>>
>> I want to change the left one to the right one when mouse hovers over
>> it. Is it possible? What's the best way to do it?
> Did you try to use the help-echo text property?  Its value can be a
> function, see "Special Properties" in the ELisp manual.
>
Thanks, this works brilliantly! However, now I realized that there's 
another problem: I need to change the image back to the one with no 
background when cursor leaves the button.


Yuan

Re: Change image upon mouse hover

[Eli Zaretskii]

> Date: Tue, 5 Dec 2023 13:24:29 -0800
> From: Yuan Fu <casouri@gmail.com>
> 
> >> I want to change the left one to the right one when mouse hovers over
> >> it. Is it possible? What's the best way to do it?
> > Did you try to use the help-echo text property?  Its value can be a
> > function, see "Special Properties" in the ELisp manual.
> >
> Thanks, this works brilliantly! However, now I realized that there's 
> another problem: I need to change the image back to the one with no 
> background when cursor leaves the button.

I guess you'd need a timer to do that?

Re: Change image upon mouse hover

[Yuan Fu]

On 12/5/23 7:26 PM, Eli Zaretskii wrote:
>> Date: Tue, 5 Dec 2023 13:24:29 -0800
>> From: Yuan Fu <casouri@gmail.com>
>>
>>>> I want to change the left one to the right one when mouse hovers over
>>>> it. Is it possible? What's the best way to do it?
>>> Did you try to use the help-echo text property?  Its value can be a
>>> function, see "Special Properties" in the ELisp manual.
>>>
>> Thanks, this works brilliantly! However, now I realized that there's
>> another problem: I need to change the image back to the one with no
>> background when cursor leaves the button.
> I guess you'd need a timer to do that?
>
Why didn't I think of that? Yes, that works great! Thanks! I was trying 
crazy hacks on track-mouse and read-events and had no luck ;-)

Yuan