how to load an image of 20 MB

Question

How can I load an image of 20mb. When I try to load it using Image( const WCHAR *filename, BOOL useEmbeddedColorManagement); or FromFile It gives me error ‘memory overflow’. Is there a way to allocate big memory in constructor? Thanks in advance, Sanjeev

robin 0 · Answer

First: if this is 20 Mb compressed file (jpg png tiff etc) - then it could be really out of memory. In this case you have only one way - you have to create your own engine to work with large images part-by-part. You should be able to load small part of image operate with it and save it to file and then load next part... Second: another possibility is described in MSDN -> Image class -> FromFile method -> Remarks: If the file does not have a valid image format or if GDI+ does not support the pixel format of the file this method throws an OutOfMemoryException exception.