from_image()

static graphics xtd::drawing::graphics::from_image ( const xtd::drawing::image &  image )

static

Creates a new xtd::drawing::graphics from the specified xtd::drawing::image.

Parameters

image

xtd::drawing::image from which to create the new xtd::drawing::graphics.

Returns

This method returns a new xtd::drawing::graphics for the specified Image.

Remarks

If the image has an indexed pixel format, this method throws an exception with the message, "A xtd::drawing::graphics object cannot be created from an image that has an indexed pixel format." The indexed pixel formats are shown in the following list.

• xtd::drawing::imaging::pixel_format::format_1bpp_indexed
• xtd::drawing::imaging::pixel_format::format_4bpp_indexed
• xtd::drawing::imaging::pixel_format::format_8bpp_indexed

You can save the indexed image as another format by using the xtd::drawing:image::save(xtd::string, xtd::drawing::imaging::image_format) method and then retrieve a xtd::drawing::graphics object for the new image.

This method also throws an exception if the image has any of the following pixel formats.

• xtd::drawing::imaging::pixel_format::undefined
• xtd::drawing::imaging::pixel_format::dont_care
• xtd::drawing::imaging::pixel_format::format_16bpp_argb1555
• xtd::drawing::imaging::pixel_format::format_16bpp_gray_scale