implement MwLLGetClipboard for X11

include/Mw/Core.h

@@ -357,9 +357,16 @@ MWDECL void MwGetScreenSize(MwWidget handle, MwRect* rect);
 
 /*!
  * @brief Reports whether a widget reports global or local coordinates upon GetXY/SetXY. Anything with a parent reports local, and most backends report global coordinates being supported for top level windows, but some (Wayland) do not.
+ * @param handle Widget
  */
 MWDECL int MwGetCoordinateType(MwWidget handle);
 
+/*!
+ * @brief Queue to get clipboard content
+ * @param handle Widget
+ */
+MWDECL void MwGetClipboard(MwWidget handle);
+
 #ifdef __cplusplus
 }
 #endif

include/Mw/LowLevel/X11.h

@@ -30,9 +30,17 @@ struct _MwLLX11 {
 	Colormap colormap;
 	Atom	 wm_delete;
 	Atom	 wm_protocols;
+	Atom	 utf8_string;
+	Atom	 compound_text;
+	Atom	 text;
+	Atom	 clipboard;
+	Atom	 selection;
 	XIM	 xim;
 	XIC	 xic;
 
+	long clipboard_time;
+	int  clipboard_pending; /* 1 if UTF8_STRING, 2 if COMPOUNd_TEXT, 3 if TEXT, 4 if STRING, otherwise 0 */
+
 	int top;
 	int toplevel;
 	int grabbed;