Form Transparent

Sina · Posted: 27/06/06 08:45 Post subject: Form Transparent

HI
I have a problem :
when I enable form color transparent or alpha blend then at run time when i drag the form the dragging speed is low how can I prevent it?
any idea?
best regards

Johnny_Bit · Moderator Joined: 15 Jun 2003 Posts: 230

get ussed to it. really, there's no other way... maybe you should check you hardware rather than software

kokkoras · Posted: 27/06/06 23:53 Post subject:

It's mainly a matter of how powerfull is your VGA card.

Sina · Posted: 30/06/06 05:41 Post subject: Maybe!

well I've got a 128mb ATI VGA card and I don't think it is weak!
but there's something else is there any api doing transparency?
because I saw other programs using transparency with normal speed !
Wink

kokkoras · Posted: 30/06/06 07:28 Post subject:

DirectX and/or OpenGL comes in mind. Sorry, can't help nore.

Johnny_Bit · Moderator Joined: 15 Jun 2003 Posts: 230

atually, there is. alphablend is pretty normal for windows, but to make special points invisible, you have to use some sick windows api, also remember that sometimes making things in pure winapi saves you many moments of "argh, this is so slow", so check msdn and have happy progamming

kokkoras · Posted: 30/06/06 13:32 Post subject:

Transparency exists since Win2K. I remember making transparent the windows of some nice tool apps (like the legendary Total Commander) by using some hacks but moving the transparent window around was like a slide show that time. It was quite acceptable though in an nVidia Ti4200 (that I still use BTW).

Kambiz · Posted: 30/06/06 16:01 Post subject:

Which level of transparency you need?

If you don't need semi-transparency, you should use Windows regions to improve speed.

By the way, in opposite of alpha belending, all 32 bit version of Windows support regions.

Sina · Posted: 01/07/06 08:09 Post subject: ?

Mr.Kambiz I need to hide one part of my form to make it more stylish I think it means full transparensy level
But I don't want to use win regions because my form doesn't want a simple shape
thanks

kokkoras · Posted: 01/07/06 12:54 Post subject:

By the way, I had alpha blending in mind.

Kambiz · Posted: 01/07/06 18:02 Post subject: Re: ?

Kambiz · Posted: 01/07/06 18:15 Post subject:

Here is a sample: Wink

Sina · Posted: 02/07/06 09:17 Post subject: Thanks

Thank you I'll try it

Sina · Posted: 09/07/06 07:56 Post subject:

Mr.Kambiz would you plz release the sample program code {one in your previous post picture}
?
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Thanx