Re: Text Ticker

From:

"John Carson" <jcarson_n_o_sp_am_@netspace.net.au>

Newsgroups:

microsoft.public.vc.language

Date:

Sat, 19 Aug 2006 15:52:13 +1000

Message-ID:

<OuCRCP1wGHA.4160@TK2MSFTNGP06.phx.gbl>

"Prafulla T" <prafulla.tekawade@gmail.com> wrote in message
news:1155959994.703673.14040@i3g2000cwc.googlegroups.com

Hello experts

i was asked to do a simple project
1-want do a text ticker can be scroll left to right and right to left
2-transparent
3-no flicker
4-has a background image

please where can i start and how do it

thank you

1. Create a memory device context memDCBackground (use CreateCompatibleDC).
    1a. If you have a background bitmap, then select it into
memDCBackground.
    1b. If you don't have a background bitmap, then create a bitmap of an
appropriate size (use CreateCompatibleBitmap) and select it into
memDCBackground. Make the necessary GDI calls to create the background in
memDCBackground.

2. Create a memory device context memDCComplete. Create a bitmap of an
appropriate size (CreateCompatibleBitmap) and select it into memDCComplete.
Call SetBkMode to set the background mode of memDCComplete to TRANSPARENT.

3. Scroll the text image by
    3a. BitBlting the background from memDCBackground to memDCComplete,
    3b. Writing the text onto memDCComplete in the new position,
    3c. Bitblting from memDCComplete to screen.

--
John Carson