Tbutton Flashing

[Skullcode 0]

can i have flashwindow effect to be applied on a VCL Tbutton Control ?

[FPiette 385]

Use a TTimer to change the color of the button periodically. If you need a lot of them, you can derive your own TFlashingButton class/component to have an easy to use flashing button on the tool palette.

 

[Mark Williams 14]

AFAIK you can't change the colour or event the font colour of a standard TButton. You can derive your own button with a canvas (which I have done in the past), but its quite a lot of work and won't work decently with themes.

 

Francois' suggestion of a timer is sound, but I would suggest internittently enabling/disabling the button to provide a flash effect/

[Remy Lebeau 1436]

4 hours ago, Mark Williams said:

AFAIK you can't change the colour or event the font colour of a standard TButton.

Not by default, but you can manually enable the BS_OWNERDRAW style on it, and then intercept WM_DRAWITEM messages sent to it.  Then you can make it look however you want.

4 hours ago, Mark Williams said:

I would suggest internittently enabling/disabling the button to provide a flash effect

Or, simply use a different Button control that supports custom coloring, like TBitBtn (which already has the BS_OWNERDRAW style) or TSpeedButton.

[Guest]

You may want to have a look at AlphaSkin and its newest version, the new attention feature is very nice, before that was drawing a blinking red rectangle around the control before AS introduced that feature.

https://www.alphaskins.com/showdoc.php?l=en&n=22

[David Heffernan 2354]

Flashing can be quite visually aggressive. It is often preferable to highlight a control in some other way. 

[Anders Melander 1815]

26 minutes ago, David Heffernan said:

Flashing can be quite visually aggressive.

Yeah. There's a reason we don't have <BLINK> in HTML anymore.

 

P.S. I just tried googling "blink html"... WTH? Do they think they're clever? Okay they're a bit clever because if you google "html blink" the result differs subtly.

[Remy Lebeau 1436]

Here is another idea - instead of flashing the Button itself, place it inside a Panel whose borders appear slightly beyond the Button's edges, and then flash the Panel as needed.  Or, create an alpha-blended overlay window, place it over the Button, and then hide/show the window as needed.

[Mike Torrettinni 198]

1 hour ago, Anders Melander said:

Yeah. There's a reason we don't have <BLINK> in HTML anymore.

 

If you still need it, you can achieve blinking effect with CSS: https://www.w3docs.com/learn-html/html-blink-tag.html