This method returns a part of the image as a top-down DIB (Device-Independent Bitmap). The palette, where 0 is the black color, is used for gray and black-and-white images.The method returns the DIB as the Handle object. This object manages memory allocation and releases resources when they are no longer in use.
Modification[in] This parameter of type ImageModification defines modifications that are performed upon image. It may include clipping rectangles, in which case only specified parts of the image are passed, stretch ratio, painting rectangles for filling up parts of the image with color and so on. This parameter may be 0, and in this case no modifications will be performed upon the image page and it will be passed “as is.”Result[out, retval] A pointer to IHandle* pointer variable that receives interface pointer of the resulting Handle object representing the handle to the associated bitmap.
This method does not work if the Engine is loaded as an out-of-process server in Linux or if the object is created using the OutprocLoader object in Windows.
FREngine.IEngine engine;FREngine.IFRDocument frdoc;// We presume that the document have been created and images have been added to it// Get bitmap handle of a color image plane of a document pageFREngine.IFRPage page = frDoc.Pages[0];FREngine.IImageDocument imageDoc = page.ImageDocument;FREngine.IImage image = imageDoc.ColorImage;FREngine.IHandle hBitmap = image.GetBitmap( null );// Work with the bitmapSystem.Drawing.Image preprocessedImage = System.Drawing.Image.FromHbitmap( hBitmap.Handle );...Gdi32.DeleteObject( hBitmap );
