CRgn has the GetRgnBox method, which gives you the bounding box of the region. Iterate over all the points in the bounding box, calling the PtInRegion for each. The points which return true are in the region, so add them to a list of the points in the region. Job done! Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Thanks for your help. It was an MFC bug fixed in the Visual Studio 6.0 Service Pack 1. Works like a dream now. Jonnie

Thanks. Doesn't seem to be the solution though. Isn't it possible to pass the CDialog a device context with a higher resolution, and get it to draw it (avoiding the rasterization which occurs when stretching)? Jonnie