Documentation generated from fossil trunk
Tk_GetRootCoords -
Compute root-window coordinates of window
#include <tk.h> Tk_GetRootCoords(tkwin, xPtr, yPtr)
| Type | Name | Mode |
|---|---|---|
| Tk_Window | tkwin | in |
| Token for window. | ||
| int | *xPtr | out |
| Pointer to location in which to store root-window x-coordinate corresponding to left edge of tkwin's border. | ||
| int | *yPtr | out |
| Pointer to location in which to store root-window y-coordinate corresponding to top edge of tkwin's border. | ||
This procedure scans through the structural information maintained by Tk to compute the root-window coordinates corresponding to the upper-left corner of tkwin's border. If tkwin has no border, then Tk_GetRootCoords returns the root-window coordinates corresponding to location (0,0) in tkwin. Tk_GetRootCoords is relatively efficient, since it does not have to communicate with the X server.