Re: More icon res in LV
----- Original Message -----
From: <cafromsw at yahoo.com>
To: "EUforum" <EUforum at topica.com>
Subject: Re: More icon res in LV
>
> Thanks for the feedback. I still can't tell if I am
> the only one with this problem, or if I am using
> win32lib incorrectly. I was hoping to hear from
> someone involved in the project to find out.
U don't have to be a win32lib programmer to understand how things work in
win32lib moreso windows!
> If
> Windows can display a 32x32 icon properly in an
> LVS_REPORT ListView it seems reasonable that I should
> be able to as well. I will see if I can figure out
> how to use stretchBlt() to reduce it to a 16x16 icon.
> Sorry about the mangled code below but Yahoo mail
> didn't take the paste properly. Chris
it all depends at times on the number of colors an icon or image has. if a
high quality image ie having 256 or more colors is reduced to 16 X 16. there
is bound to be some color loss. Try using an icon editor and try converting
a 32X32(16bit) icon to 16 X 16 and u'll see what i mean. this is not windows
fault. it all boils down to resolution. there is no way u will shrink an
icon by half and expect same quality. it will have to lose have the color
data. eg 32 X 32 displayed as 16 X 16. will cause loss, what about the other
colours of the 16 pixels. thuink about it.
Jordah
> cafromsw at yahoo.com
>
> --- jordah at btopenworld.com wrote:
> >
> > hi all,
> > The image lists were designed to hold images of
> > same dimensions ie if u
> > made an image list of 16 X 16 all images larger will
> > be cropped and those
> > smaller will appear "as-is". Also the imagelist
> > functions require a handle
> > because their need to make one large
> > bitmap(memory/compatible) that contains
> > all the images. Using Stretchblt alone,is no use
> > because it actually creates
> > another memory bitmap that is identical to original
> > but stretched using
> > specified raster operations. The only possible way
> > known to me at the moment
> > is using the output memory bitmap in the output DC
> > from stretchblt(). so use
> > GetObjects() to obtain the handle of the bitmap from
> > the outputDC. Then use
> > that handle. I hope i make some sense.
> >
> > Jordah ferguson
> >
> > ----- Original Message -----
> > From: "Jonas Temple" <jktemple at yhti.net>
> > To: "EUforum" <EUforum at topica.com>
> > Sent: Wednesday, January 08, 2003 9:49 PM
> > Subject: RE: More icon res in LV
> >
> >
> > > I ran into this when I worked on my xpm icon
> > library (available in
> > > Recent Contributions). What I found was that when
> > you add an icon to an
> > > image list for displaying in a list view if the
> > image is larger/smaller
> > > than 16x16 (assuming report view) then this
> > somehow messed up the images
> > > in the image list. I created my list view with
> > ICON style and then used
> > > stretchBlt to ensure the image was 32x32.
> > >
> > > I thought this took care of the problem and then
> > recently found out this
> > > trick worked on Win2K but didn't work on Win98.
> > :( Back to the drawing
> > > board.
> > >
> > > Unless anyone else has any wisdom on this, I would
> > suggest making sure
> > > that all icons you add to the image list for a
> > list view are 16x16. If
> > > I remember correctly the image you were
> > referencing in shell32.dll is
> > > larger than 16x16.
> > >
> > > Jonas
> > > cafromsw at yahoo.com wrote:
> > > > I have been doing more research into my icon
> > > > resolution problem, mostly because I hate it
> > when I
> > > > don't understand something and can't figure it
> > out. I
> > > > have decided to inlcude a sample program and a
> > > > screenshot of the output on my computers. I
> > tried it
> > > > on 5 WinME systems and a dual boot laptop with
> > WinXP.
> > > > Here is the code I used for the screenshot:
> > > >
> > > > ----------------------------
> > > > include win32lib.ew
> > > >
> > > > constant Win1 = createEx( Window, "LV Test", 0,
> > > > Default, Default, 400, 300, 0, 0)
> > > >
> > > > constant LV1 = createEx( ListView, {"Column 1"},
> > Win1,
> > > > 4, 10, 300, 100,
> > > >
> > > > or_all({LVS_REPORT,LVS_SHOWSELALWAYS}), 0)
> > > >
> > > > constant LV2 = createEx( ListView, {"Column 1"},
> > Win1,
> > > > 4, 120, 300, 100,
> > > >
> > > > or_all({LVS_REPORT,LVS_SHOWSELALWAYS}), 0)
> > > >
> > > > object OK
> > > > seq ic ic = {}
> > > > seq sq sq = {}
> > > >
> > > > ic &= addIcon(extractIcon({"shell32.dll",1}))
> > > >
> > > > -- disks04.ico is from win32lib\demo it
> > contains, in
<snip>
>
>
|
Not Categorized, Please Help
|
|
