patch 8.1.1645: cannot use a popup window for a balloon
Problem: Cannot use a popup window for a balloon.
Solution: Add popup_beval(). Add the "mousemoved" property. Add the
screenpos() function.
diff --git a/src/proto/beval.pro b/src/proto/beval.pro
index 2be64a0..0238907 100644
--- a/src/proto/beval.pro
+++ b/src/proto/beval.pro
@@ -1,5 +1,6 @@
/* beval.c */
int get_beval_info(BalloonEval *beval, int getword, win_T **winp, linenr_T *lnump, char_u **textp, int *colp);
+int find_word_under_cursor(int mouserow, int mousecol, int getword, int flags, win_T **winp, linenr_T *lnump, char_u **textp, int *colp);
void post_balloon(BalloonEval *beval, char_u *mesg, list_T *list);
int can_use_beval(void);
void general_beval_cb(BalloonEval *beval, int state);