GDI+ image drawing

[Guest mgipson]

I am using GDI+ to draw an image onto a gauge. The image is stored as a bitmap in the resources and loaded into a Gdiplus::Bitmap.The problem I have is that when the image is drawn onto the gauge GDI+ is doing some dithering on it which results in a minor checkerboard pattern appearing. I am guessing this to due to the format of my bitmap being different from the final gauge bitmap. I have tried various different bit depths, ways of creating the bitmap etc. but always get the same result.Has anybody else had this problem? Anybody got any ideas on how to solve this?Many thanks,Mark

[Guest _ak]

FS uses 15 bit images internally

[Guest mgipson]

Correct, ARGB 1555. So if I convert my data to that format before drawing it should be OK. I have tried this and still got the dithering problem. I will have another look at that test to make sure I did everything correctly.