Transparent bitmaps

[LyMc]

To the best I've been able to test VS .NET, it apparently does not allow gifs to be imported as bitmaps. In fact, it seems to like bmps exclusively. The question is: is there any way to force a single color on a bitmap to be treated as transparent? I'm aware of the O/T toggle on bitmap editor, but I have not been able to make it work: the bitmap I am working with just now has the T turned on, yet the bitmap, when displayed obviously doesn not have a transparent background.

If someone can give me the clue/detail I need to make a single color transparent in a bitmap in VS, I'd be very grateful.

 

[OlafBogus]

several ways exist...
one is to display yer bitmaps using an CImageList
e.g.
\\create image list
HBITMAP hBitmap = (HBITMAP)LoadImage(NULL, *pstrBmpFileName, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE | LR_CREATEDIBSECTION | LR_DEFAULTSIZE);

if (hBitmap)
m_bmpItem.Attach(hBitmap);

BITMAP bm;
m_bmpItem.GetBitmap (&bm);
m_pImageList = new CImageList;
m_pImageList->Create(bm.bmWidth, bm.bmHeight, ILC_COLOR24 | ILC_MASK, 1, 1);
\\add image with transparent colour
m_pImageList->Add(&m_bmpItem, RGB(255, 0, 255));

//draw the list in :aint or the like
m_pImageList->DrawIndirect(pDC,
nBmpIndex,
CPoint(DestRect.left, DestRect.top),
CSize(DestRect.Width(), DestRect.Height()),
CPoint(0, 0));