Adds a child at fixed coordinates in one of the text widget's windows.

The window must have nonzero size (see TextView.setBorderWindowSize). Note that the child coordinates are given relative to scrolling. When placing a child in GTK_TEXT_WINDOW_WIDGET, scrolling is irrelevant, the child floats above all scrollable areas. But when placing a child in one of the scrollable windows (border windows or text window) it will move with the scrolling as needed.

class TextView


child Widget
whichWindow GtkTextWindowType

which window the child should appear in

xpos int

X position of child in window coordinates

ypos int

Y position of child in window coordinates