ICO to GIF? (transparant)

[Edwin Knoppert]

I'm trying to convert an icon handle to GIF.

Something like:
Public Function GetImageFromIconHandle(ByVal hIcon As Int32) As Int32
Dim ico As Icon = Icon.FromHandle(hIcon)
Dim x As New Drawing.IconConverter
'x.ConvertTo(ico,typeof(System.Drawing.Imaging.Ima geFormat.Gif) )
End Function

x.ConvertTo(ico, <requires a system.type> )

I don't know how to do that.
Important is that a transparent icon should remain transparent.

hIcon is a valid 16x16 icon.

[Daniel Fisher\(lennybacon\)]

Have you tried typeof(Bitmap) ?

--
Daniel Fisher(lennybacon)
http://www.lennybacon.com
"Edwin Knoppert" <ne**@hellobasic.com> wrote in message
news:43**********************@text.nova.planet.nl. ..

I'm trying to convert an icon handle to GIF.

Something like:
Public Function GetImageFromIconHandle(ByVal hIcon As Int32) As Int32
Dim ico As Icon = Icon.FromHandle(hIcon)
Dim x As New Drawing.IconConverter
'x.ConvertTo(ico,typeof(System.Drawing.Imaging.Ima geFormat.Gif) )
End Function

x.ConvertTo(ico, <requires a system.type> )

I don't know how to do that.
Important is that a transparent icon should remain transparent.

hIcon is a valid 16x16 icon.

[Edwin Knoppert]

That would not work but..

i already converted to bmp and i used that code.
But the backcolor remains black while i added:
Dim bmp As Bitmap = ico.ToBitmap
bmp.MakeTransparent(Color.Black)
Return bmp

The image remains the same though.
Better see a real example with a transparent ico > gif.

Your suggestion:
For the type i used: x.ConvertTo(ico, bmp.GetType)
But i don't know what to use to draw to user, and even to expect a
transparent gif since i still use a bitmap object (GIF is bitmap so i should
give it a chance).

Currently the BMP is shown:
Response.ContentType = "image/gif"
Dim xx As System.Drawing.Imaging.ImageFormat
' send the image to the viewer
bmp.Save(Response.OutputStream, xx.Gif)

bmp.Dispose()
Response.End()

"Daniel Fisher(lennybacon)" <in**@lennybacon.com> schreef in bericht
news:Ol****************@TK2MSFTNGP14.phx.gbl...

Have you tried typeof(Bitmap) ?

--
Daniel Fisher(lennybacon)
http://www.lennybacon.com
"Edwin Knoppert" <ne**@hellobasic.com> wrote in message
news:43**********************@text.nova.planet.nl. ..

I'm trying to convert an icon handle to GIF.

Something like:
Public Function GetImageFromIconHandle(ByVal hIcon As Int32) As Int32
Dim ico As Icon = Icon.FromHandle(hIcon)
Dim x As New Drawing.IconConverter
'x.ConvertTo(ico,typeof(System.Drawing.Imaging.Ima geFormat.Gif) )
End Function

x.ConvertTo(ico, <requires a system.type> )

I don't know how to do that.
Important is that a transparent icon should remain transparent.

hIcon is a valid 16x16 icon.

[Nathan Sokalski]

Making an image transparent in .NET is a rather complicated process, which I
don't quite understand. Here is a page that I was referred to by someone in
a newsgroup which is supposed to work. It is written in C#. I am a VB.NET
coder, and I couldn't get it to work in that, but I think that is due to the
unmanaged code capabilities of C#. I have not tried the code in C#, so I am
assuming it would work if I did it in C#. See what it does for you. (If you
do figure out a way to get it to work in VB.NET, could you let me know?)
Here is the URL:

http://ewbi.blogs.com/develops/2005/...klines_22.html

Good Luck!
--
Nathan Sokalski
nj********@hotmail.com
http://www.nathansokalski.com/

"Edwin Knoppert" <ne**@hellobasic.com> wrote in message
news:43**********************@text.nova.planet.nl. ..

That would not work but..

i already converted to bmp and i used that code.
But the backcolor remains black while i added:
Dim bmp As Bitmap = ico.ToBitmap
bmp.MakeTransparent(Color.Black)
Return bmp

The image remains the same though.
Better see a real example with a transparent ico > gif.

Your suggestion:
For the type i used: x.ConvertTo(ico, bmp.GetType)
But i don't know what to use to draw to user, and even to expect a
transparent gif since i still use a bitmap object (GIF is bitmap so i
should give it a chance).

Currently the BMP is shown:
Response.ContentType = "image/gif"
Dim xx As System.Drawing.Imaging.ImageFormat
' send the image to the viewer
bmp.Save(Response.OutputStream, xx.Gif)

bmp.Dispose()
Response.End()

"Daniel Fisher(lennybacon)" <in**@lennybacon.com> schreef in bericht
news:Ol****************@TK2MSFTNGP14.phx.gbl...

Have you tried typeof(Bitmap) ?

--
Daniel Fisher(lennybacon)
http://www.lennybacon.com
"Edwin Knoppert" <ne**@hellobasic.com> wrote in message
news:43**********************@text.nova.planet.nl. ..

I'm trying to convert an icon handle to GIF.

Something like:
Public Function GetImageFromIconHandle(ByVal hIcon As Int32) As Int32
Dim ico As Icon = Icon.FromHandle(hIcon)
Dim x As New Drawing.IconConverter
'x.ConvertTo(ico,typeof(System.Drawing.Imaging.Ima geFormat.Gif) )
End Function

x.ConvertTo(ico, <requires a system.type> )

I don't know how to do that.
Important is that a transparent icon should remain transparent.

hIcon is a valid 16x16 icon.

[Edwin Knoppert]

Thanks, will take a peek tomorrow :)

It's a bit odd though, both types support tranparancy.
So some conversion unit could 'know' what get's transparent (imo).
Conversion to plain BMP first is prob.not ok.
However dotnet has a maketransparent method, and i was hoping this would
work at least.
I did not see any difference.

But hey.. what do i know? :)
"Nathan Sokalski" <nj********@hotmail.com> schreef in bericht
news:ea****************@TK2MSFTNGP15.phx.gbl...

Making an image transparent in .NET is a rather complicated process, which
I don't quite understand. Here is a page that I was referred to by someone
in a newsgroup which is supposed to work. It is written in C#. I am a
VB.NET coder, and I couldn't get it to work in that, but I think that is
due to the unmanaged code capabilities of C#. I have not tried the code in
C#, so I am assuming it would work if I did it in C#. See what it does for
you. (If you do figure out a way to get it to work in VB.NET, could you
let me know?) Here is the URL:

http://ewbi.blogs.com/develops/2005/...klines_22.html

Good Luck!
--
Nathan Sokalski
nj********@hotmail.com
http://www.nathansokalski.com/

"Edwin Knoppert" <ne**@hellobasic.com> wrote in message
news:43**********************@text.nova.planet.nl. ..

That would not work but..

i already converted to bmp and i used that code.
But the backcolor remains black while i added:
Dim bmp As Bitmap = ico.ToBitmap
bmp.MakeTransparent(Color.Black)
Return bmp

The image remains the same though.
Better see a real example with a transparent ico > gif.

Your suggestion:
For the type i used: x.ConvertTo(ico, bmp.GetType)
But i don't know what to use to draw to user, and even to expect a
transparent gif since i still use a bitmap object (GIF is bitmap so i
should give it a chance).

Currently the BMP is shown:
Response.ContentType = "image/gif"
Dim xx As System.Drawing.Imaging.ImageFormat
' send the image to the viewer
bmp.Save(Response.OutputStream, xx.Gif)

bmp.Dispose()
Response.End()

"Daniel Fisher(lennybacon)" <in**@lennybacon.com> schreef in bericht
news:Ol****************@TK2MSFTNGP14.phx.gbl...

Have you tried typeof(Bitmap) ?

--
Daniel Fisher(lennybacon)
http://www.lennybacon.com
"Edwin Knoppert" <ne**@hellobasic.com> wrote in message
news:43**********************@text.nova.planet.nl. ..
I'm trying to convert an icon handle to GIF.

Something like:
Public Function GetImageFromIconHandle(ByVal hIcon As Int32) As Int32
Dim ico As Icon = Icon.FromHandle(hIcon)
Dim x As New Drawing.IconConverter
'x.ConvertTo(ico,typeof(System.Drawing.Imaging.Ima geFormat.Gif) )
End Function

x.ConvertTo(ico, <requires a system.type> )

I don't know how to do that.
Important is that a transparent icon should remain transparent.

hIcon is a valid 16x16 icon.

[Nathan Sokalski]

Don't let that make you feel too bad, my first attempt at transparency was
to use the MakeTransparent method, too. To be honest, I think that there
should be a method (or maybe a predefined Color, or maybe a separate class
that inherits something from GDI+ that is used for making transparent
images) that makes it simpler. Maybe if we're lucky that make one in a
future release of .NET, because if you think about it, transparency is used
in almost all gif images, I mean, when was the last time you saw a button or
logo that was completely rectangular?
--
Nathan Sokalski
nj********@hotmail.com
http://www.nathansokalski.com/

"Edwin Knoppert" <in**@pbsoft.speedlinq.nl> wrote in message
news:dn**********@azure.qinip.net...

Thanks, will take a peek tomorrow :)

It's a bit odd though, both types support tranparancy.
So some conversion unit could 'know' what get's transparent (imo).
Conversion to plain BMP first is prob.not ok.
However dotnet has a maketransparent method, and i was hoping this would
work at least.
I did not see any difference.

But hey.. what do i know? :)
"Nathan Sokalski" <nj********@hotmail.com> schreef in bericht
news:ea****************@TK2MSFTNGP15.phx.gbl...

Making an image transparent in .NET is a rather complicated process,
which I don't quite understand. Here is a page that I was referred to by
someone in a newsgroup which is supposed to work. It is written in C#. I
am a VB.NET coder, and I couldn't get it to work in that, but I think
that is due to the unmanaged code capabilities of C#. I have not tried
the code in C#, so I am assuming it would work if I did it in C#. See
what it does for you. (If you do figure out a way to get it to work in
VB.NET, could you let me know?) Here is the URL:

http://ewbi.blogs.com/develops/2005/...klines_22.html

Good Luck!
--
Nathan Sokalski
nj********@hotmail.com
http://www.nathansokalski.com/

"Edwin Knoppert" <ne**@hellobasic.com> wrote in message
news:43**********************@text.nova.planet.nl. ..

That would not work but..

i already converted to bmp and i used that code.
But the backcolor remains black while i added:
Dim bmp As Bitmap = ico.ToBitmap
bmp.MakeTransparent(Color.Black)
Return bmp

The image remains the same though.
Better see a real example with a transparent ico > gif.

Your suggestion:
For the type i used: x.ConvertTo(ico, bmp.GetType)
But i don't know what to use to draw to user, and even to expect a
transparent gif since i still use a bitmap object (GIF is bitmap so i
should give it a chance).

Currently the BMP is shown:
Response.ContentType = "image/gif"
Dim xx As System.Drawing.Imaging.ImageFormat
' send the image to the viewer
bmp.Save(Response.OutputStream, xx.Gif)

bmp.Dispose()
Response.End()

"Daniel Fisher(lennybacon)" <in**@lennybacon.com> schreef in bericht
news:Ol****************@TK2MSFTNGP14.phx.gbl...
Have you tried typeof(Bitmap) ?

--
Daniel Fisher(lennybacon)
http://www.lennybacon.com
"Edwin Knoppert" <ne**@hellobasic.com> wrote in message
news:43**********************@text.nova.planet.nl. ..
> I'm trying to convert an icon handle to GIF.
>
> Something like:
> Public Function GetImageFromIconHandle(ByVal hIcon As Int32) As Int32
> Dim ico As Icon = Icon.FromHandle(hIcon)
> Dim x As New Drawing.IconConverter
> 'x.ConvertTo(ico,typeof(System.Drawing.Imaging.Ima geFormat.Gif) )
> End Function
>
> x.ConvertTo(ico, <requires a system.type> )
>
> I don't know how to do that.
> Important is that a transparent icon should remain transparent.
>
> hIcon is a valid 16x16 icon.
>
>

[ABBSoft Team]

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