OpenEuphoria

Needing some Windows programming help

• Posted by DB James <larches at comcast.net> Jun 09, 2007
• 567 views

Hi,

I am having a lot of programming fun with updates to L and D (the report
version) and have arrived at a place I need some help with.

Background: I am drawing in two child windows.  The top one contains the
colored blocks of L and D, and the bottom one is a continuous graph that
reports on two features of the plants and animals.  When the drawings are
erased by minimizing, or by having other windows come up in front of the drawn
areas, the drawings are erased.  This isn't a problem with the colored blocks
as they are redrawn constantly, but the graph *was* a problem.

So, I created a sequence to "draw" into such that I could periodically do my
own refresh of the graph window.  After much head-scratching, I got that to
work.  The fake-refresh is slow, so I do it after each 100 data-writes to
the graph window.  So far, so good, but of course, it is a hack.  I also have
the option to save bitmaps of the graphs for later inspection.

Some of the coding relating to this:

if curX=cw67Coord[5] or not remainder(frame,100) then --update
	SetShadowImage(CWindow67,shadowImage,Black)--draw the shadow image
end if
curX+=1
if curX>cw67Coord[5] then
	curX=cw67Coord[1]
if isChecked(CheckBox73) then
	a1=copyToTrueColorBitmapFile( CWindow67, GetBMPName(), cw67Coord[1],
cw67Coord[2], cw67Coord[5], cw67Coord[6] )
end if
end if

Questions: how can I get Windows to refresh the graph window?  And, because
a minimized window couldn't save the bitmap, how can I save as a bitmap the
sequence that I use to refresh the child window?  It only contains the
pixel-colors of the graph.

Thanks for any help here,

--Quark