image functions - continued
|XgrDrawImageScaled||( grid, imageGrid, startX, startY, endX, endY, dx, dy )
XgrDrawImageScaled() draws imageGrid in grid at dx, dy.
(startX,startY:endX,endY) are pixel offsets into the image. The left and/or upper portion of an image is skipped if startX and/or startY is non-zero. The right and/or lower portion of an image is not drawn if endX and/or endY is reached before the imageGrid is exhausted. If endX and/or endY is zero, endX and/or endY are set to the x and/or y limits of the image.
Drawing is not performed outside the grid-box.
XgrDrawImageScaled() interprets image data as scaled coordinates, therefore it will zoom (enlarge and compress) images of drawings, icons, and video images.
XgrDrawImageScaled() is a slow operation.
|XgrGetImage||( grid, @image )
XgrGetImage() returns the image array from grid . This copy of the image in grid is in 24-bits per pixel DIB format, with 8-bits each for red,green,blue .
|XgrGetImageArrayInfo||(@image, @bitsPerPixel, @width, @height )
XgrGetImageArrayInfo() returns information about the image in XLONG array image . The contents of image must be in valid DIB format.
XgrGetImageArrayInfo() returns the number of bitsPerPixel, and the image (width,height) in pixels.