RE: .NET CF Drawing Problems

Hi Cristian,

Welcome to MSDN newsgroup!

Based on my understanding, your concern is the Bitmap.Setpixel method has
the bad performance in your application. If I have misunderstood anything,
please let me know.

By using Reflector tool, you can find the Bimap.Setpixel method calls the
GdipBitmapSetPixel function which belongs to native GDI. So I think the
problem is not caused by .NET Compact Framework. As far as I know, neither
..NET CF nor EVC (Embedded Visual C++) contains LockBits method because the
platform doesn't supply it.

In the situation, I suggest we should create a buffer like the LockBits
does by ourselves. If the performance also bad, I think maybe the problem
caused by algorithm. Or you can post the issue to GDI queue and discuss
with the people who may have more experience about GDI performance.

I hope the above information helps, if you have any questions or concerns,
please do not hesitate to let me know. I am looking forward your reply.

Yuan Ren [MSFT]
Microsoft Online Support

.

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