Use Point with a DC

[willib]

HI all

I want to Programm something that reads out the Top screen and analyse it ( in real I want to find a chess board )
I can get the primary screen in a DC
now i must find a rectangle in it
therefor I need the point(X,Y) colors of the DC but
I cant find a function for this.

The sense of the Project is to let 2 Chess Programms play against each other over IP.

Can someone give me a hint

[Kale]

The sense of the Project is to let 2 Chess Programms play against each other over IP.

Maybe a better way to achieve this is to break the board down into a simple 2d array (x,y) 'Dim'ed from a Structure describing that square (empty/what piece is there). Then just communicate this array between programs and let the AI use the opponents array for making descisions. Then display the results to the screen in a nicely drawn chess board. Maybe a little easier than trying to find out what is being displayed on the screen, etc.

[willib]

HI again

I do not want to code the chess programm itselfs.
There are several programs like Fritz or Genius but then do not communicate with all of them. So I like to make them play against each other that way

Its a long way to go ......

[LarsG]

Isn't there some API call to get the width and height of a DC?! I would assume there is some anyways.. then you'd be able to grab it as an image, and transmit this as a file over the network.. I think?!?

[Kale]

To retrieve a colour at the given coord (WinAPI):

Code: Select all

RGBValue = GetPixel_(HDC, XPos, YPos);

To retrieve the width and height of the device context use (WinAPI):

Code: Select all

GetBoundsRect_(HDC, Bounds.RECT, #NULL)
Debug Bounds\Right
Debug Bounds\Bottom

Get a Good WinAPI reference and all can be found, try here:
http://www.garyw.uklinux.net/PB/WIN32.zip
or
http://www.mentalis.org/agnet/apiguide.shtml

[willib]

Thanks I will try it out next week

Willi