Developer's Daily | Unix by Example |
main | java | perl | unix | dev directory | web log |
______________________________________________________________________________
Tk_GetRootCoords ? Compute root-window coordinates of window |
#include <tk.h> Tk_GetRootCoords(tkwin, xPtr, yPtr) |
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 doesn’t have to communicate with the X server. |
coordinates, root window |