[Mono-winforms-list] Graphics.FromHwnd(IntPtr.Zero) not working

Carlos Alberto Cortez calberto.cortez at gmail.com
Tue Feb 9 17:24:23 EST 2010


This method is defined basically to retrieve available information in the
Graphics instance, not to do actual draw work on the screen (this could be
accomplished by a different way, but it would be system specific, as nothing
like that appears in the winforms api).


2010/2/7 Stefano Del Furia <delfo at edudotnet.it>

>  Hi,
> i'm using Graphics.FromHwnd(IntPtr.Zero) for drawing directly on screen but
> under Ubuntu 9.04 it don't work.
> The method don't return a null value but when i try to draw some object
> like a a line nothing happened like in this way:
>               Graphics g = Graphics.FromHwnd(IntPtr.Zero);
>             Point pMousePos = new Point(e.X, e.Y);
>             g.DrawLine(p, pMousePos, lastPoint);
> What am i wrong ??
> Thanks in advance.
> Stefano
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