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<HTML><HEAD><TITLE>Xlib Programming Manual: XTranslateCoordinates</TITLE></HEAD><BODY><H1 ALIGN=center>XTranslateCoordinates</H1><H2>Syntax</H2>To translate a coordinate in one window to the coordinatespace of another window, use<B>XTranslateCoordinates()</B>.<!.IN "XTranslateCoordinates" "" "@DEF@"><CODE><PRE>Bool XTranslateCoordinates(<B>display</B>, <B>src_w</B>, <B>dest_w</B>, <B>src_x</B>, <B>src_y</B>, <B>dest_x_return</B>, <B>dest_y_return</B>, <B>child_return</B>) <A HREF="../display/opening.html#Display">Display</A> *<B>display</B>; Window <B>src_w</B>, <B>dest_w</B>; int <B>src_x</B>, <B>src_y</B>; int *<B>dest_x_return</B>, *<B>dest_y_return</B>; Window *<B>child_return</B>;</PRE></CODE><H2>Arguments</H2><TABLE><TR><TD> <B>display</B><TD> Specifies the connection to the X server.<TR><TD> <B>src_w</B><TD> Specifies the source window.<TR><TD> <B>dest_w</B><TD> Specifies the destination window.<TR><TD> <B>src_x</B><BR><B>src_y</B><TD> Specify the x and y coordinates within the source window.<TR><TD> <B>dest_x_return</B><BR><B>dest_y_return</B><TD> Return the x and y coordinates within the destination window.<TR><TD> <B>child_return</B><TD> Returns the child if the coordinates are contained in a mapped child of thedestination window.</TABLE><H2>Description</H2>If<B>XTranslateCoordinates()</B>returns<B>True</B>,it takes the src_x and src_y coordinates relativeto the source window's origin and returns these coordinates to dest_x_return and dest_y_returnrelative to the destination window's origin.If<B>XTranslateCoordinates()</B>returns <B>False</B>, src_w and dest_w are on different screens,and dest_x_return and dest_y_return are zero.If the coordinates are contained in a mapped child of dest_w,that child is returned to child_return.Otherwise, child_return is set to<B>None</B>.<P><B>XTranslateCoordinates()</B>can generate a<B>BadWindow</B>error.<H2>Diagnostics</H2><TABLE><TR><TD><B>BadWindow</B><TD>A value for a Window argument does not name a defined Window.</TABLE><H2>See also</H2>"<A HREF="translate.html">Translating Screen Coordinates</A>"<HR><ADDRESS><A HREF="http://tronche.com/">Christophe Tronche</A>, <A HREF="mailto:ch.tronche@computer.org">ch.tronche@computer.org</A></ADDRESS></BODY></HTML>⌨️ 快捷键说明
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