X Window System routines: Manipulating images

Table 1 provides the routines for manipulating images.

Table 1. Manipulating images
Routine	Description
XAddPixel()	Increases each pixel in pixmap by a constant value.
XCreateImage()	Allocates memory for the XImage structure.
XDestroyImage()	Frees memory for the XImage structure.
XGetPixel()	Gets a pixel value in an image.
XPutPixel()	Sets a pixel value in an image.
XSubImage()	Creates an image that is a subsection of a specified image.