Le 16 juil. 06 à 04:07 Matin, CV a écrit:
On Jul 15, 2006, at 6:34 AM, Christian Miller wrote:
Is it possible to obtain the contents of a canvas and place it
back into a Picture object? Sort of the opposite of double-
buffering. Without knowing what has been drawn on the canvas, I
want to take a "snapshot" of what the canvas few. I hope that
makes sense, I don't feel like I'm explaining myself correctly.
The only way would be to bit map it:
dim p as picture = newPicture(Canvas1.Width, Canvas1.Height, 32)
dim Surf as RGBSurface = p.RGBSurface
dim h as integer
dim v as integer
dim hmin as integer = Window1.Left + Canvas1.Left
dim vmin as integer = Window1.Top + Canvas1.Top
dim hmax as integer = hmin + Canvas1.Width
dim vmax as integer = vmin + Canvas1.Height
For h = hmin to hmax
For v =vmin to vmax
Surf.Pixel(h - hmin, v - vmin) = system.Pixel(h, v)
Next v
Next h
// p contains an image of Canvas1
I think it won't work if another window is in front of the one
containing the canvas while the code is running.
But you can use DrawInto instead of System.Pixel,
no?_______________________________________________
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