ImageData.type

The type of file from which the image was read.

It is expressed as one of the following values: <dl> <dt><code>IMAGE_BMP</code></dt> <dd>Windows BMP file format, no compression</dd> <dt><code>IMAGE_BMP_RLE</code></dt> <dd>Windows BMP file format, RLE compression if appropriate</dd> <dt><code>IMAGE_GIF</code></dt> <dd>GIF file format</dd> <dt><code>IMAGE_ICO</code></dt> <dd>Windows ICO file format</dd> <dt><code>IMAGE_JPEG</code></dt> <dd>JPEG file format</dd> <dt><code>IMAGE_PNG</code></dt> <dd>PNG file format</dd> </dl>