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- Tk_GetRootCoords(3) Tk Library Procedures
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- NAME
- Tk_GetRootCoords - Compute root-window coordinates of window
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- SYNOPSIS
- #include <tk.h>
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- Tk_GetRootCoords(_t_k_w_i_n, _x_P_t_r, _y_P_t_r)
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- ARGUMENTS
- Tk_Window _t_k_w_i_n (in) Token for window.
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- int *_x_P_t_r (out) Pointer to location in which
- to store root-window x-
- coordinate corresponding to
- left edge of _t_k_w_i_n's border.
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- int *_y_P_t_r (out) Pointer to location in which
- to store root-window y-
- coordinate corresponding to
- top edge of _t_k_w_i_n's border.
- _________________________________________________________________
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- DESCRIPTION
- This procedure scans through the structural information
- maintained by Tk to compute the root-window coordinates
- corresponding to the upper-left corner of _t_k_w_i_n's border.
- If _t_k_w_i_n has no border, then Tk_GetRootCoords returns the
- root-window coordinates corresponding to location (0,0) in
- _t_k_w_i_n. Tk_GetRootCoords is relatively efficient, since it
- doesn't have to communicate with the X server.
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- KEYWORDS
- coordinates, root window
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- Tk 1
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