Facilitate swapping clock messages

The routine SetClockMessage() now copies the message of the other clock
when it gets passed an empty string. To erase a message, we must pass
a NULL argument.

diff --git a/dialogs.c b/dialogs.c
index 4fa93c3..7c90898 100644 (file)
--- a/dialogs.c
+++ b/dialogs.c
@@ -3053,7 +3053,7 @@ DisplayBlackClock (long timeRemaining, int highlight)
 void
 SetClockMessage (int n, char *msg)
 {
-    safeStrCpy(clockMsg[n], msg, MSG_SIZ);
+    safeStrCpy(clockMsg[n], !msg ? "" : *msg ? msg : clockMsg[!n], MSG_SIZ);
 }
 
 //---------------------------------------------

diff --git a/winboard/winboard.c b/winboard/winboard.c
index 58508d6..10f66ea 100644 (file)
--- a/winboard/winboard.c
+++ b/winboard/winboard.c
@@ -9134,7 +9134,7 @@ DisplayBlackClock(long timeRemaining, int highlight)
 void\r
 SetClockMessage (int color, char *msg)\r
 {\r
-  safeStrCpy(clockMsg[n], msg, MSG_SIZ);\r
+  safeStrCpy(clockMsg[n], !msg ? "" : *msg ? msg : clockMsg[!n], MSG_SIZ);\r
 }\r
 \r
 int\r