help with windows transparency

hello, i am trying to create a form with the shape of a bitmap, like media
player can do. i know that there is a bug with the TransparencyKey property
and 32bpp mode. so i tried the workaround provided on msdn but it doesnt
work. could someone please tell me what im doing wrong? i am using windows
xp. here is my code.

Bitmap bmp = new Bitmap("Body.bmp");
bmp.MakeTransparent(bmp.GetPixel(0, 0));
BackgroundImage = bmp;
this.TransparencyKey = bmp.GetPixel(0, 0);

now this does make the proper color transparent (which is at 0,0 on the
bitmap), but it also makes pure black (RGB(0,0,0). why would it do this?

thanks in advance.

i forgot to mention. the transparent color at 0,0 is bright yellow, so thats
not why the black is transparent too.

"jt harkey" wrote:

> hello, i am trying to create a form with the shape of a bitmap, like media
> player can do. i know that there is a bug with the TransparencyKey property
> and 32bpp mode. so i tried the workaround provided on msdn but it doesnt
> work. could someone please tell me what im doing wrong? i am using windows
> xp. here is my code.
>
> Bitmap bmp = new Bitmap("Body.bmp");
> bmp.MakeTransparent(bmp.GetPixel(0, 0));
> BackgroundImage = bmp;
> this.TransparencyKey = bmp.GetPixel(0, 0);
>
> now this does make the proper color transparent (which is at 0,0 on the
> bitmap), but it also makes pure black (RGB(0,0,0). why would it do this?
>
> thanks in advance.
>

ugh, i still cant get it. i cant figure this out. does anyone have any idea?
no matter what the pure black is always transparent and it shouldnt be.

"jt harkey" wrote:

> hello, i am trying to create a form with the shape of a bitmap, like media
> player can do. i know that there is a bug with the TransparencyKey property
> and 32bpp mode. so i tried the workaround provided on msdn but it doesnt
> work. could someone please tell me what im doing wrong? i am using windows
> xp. here is my code.
>
> Bitmap bmp = new Bitmap("Body.bmp");
> bmp.MakeTransparent(bmp.GetPixel(0, 0));
> BackgroundImage = bmp;
> this.TransparencyKey = bmp.GetPixel(0, 0);
>
> now this does make the proper color transparent (which is at 0,0 on the
> bitmap), but it also makes pure black (RGB(0,0,0). why would it do this?
>
> thanks in advance.
>

Have you seen this bug report? It looks like it's related:

http://lab.msdn.microsoft.com/produ...9f-b246dabaeef0

The bad news is that this bug was reported in July, and MS has responded
that they know it's a real bug, but they don't consider it an important
enough bug to fix at this time. And that was 5 months ago...

[==P==]

"jt harkey" <jtharkey@discussions.microsoft.com> wrote in message
news9191143-8473-4D42-B13E-695D61A4CD20@microsoft.com...
> ugh, i still cant get it. i cant figure this out. does anyone have any
> idea?
> no matter what the pure black is always transparent and it shouldnt be.
>
> "jt harkey" wrote:
>
>> hello, i am trying to create a form with the shape of a bitmap, like
>> media
>> player can do. i know that there is a bug with the TransparencyKey
>> property
>> and 32bpp mode. so i tried the workaround provided on msdn but it doesnt
>> work. could someone please tell me what im doing wrong? i am using
>> windows
>> xp. here is my code.
>>
>> Bitmap bmp = new Bitmap("Body.bmp");
>> bmp.MakeTransparent(bmp.GetPixel(0, 0));
>> BackgroundImage = bmp;
>> this.TransparencyKey = bmp.GetPixel(0, 0);
>>
>> now this does make the proper color transparent (which is at 0,0 on the
>> bitmap), but it also makes pure black (RGB(0,0,0). why would it do this?
>>
>> thanks in advance.
>>