Use _CONST_X_STRING to make libXt declare String as const char *

Clears 169 out of 240 -Wdiscarded-qualifiers warnings from gcc 7.3

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/Dialog.h b/Dialog.h
index d5727ff..529918c 100644
--- a/Dialog.h
+++ b/Dialog.h
@@ -51,5 +51,5 @@ typedef struct {
 } DialogButton;
 
 extern Dialog CreateDialog(Widget, String, unsigned long);
-extern unsigned long PopupDialog(Dialog, String, String, String *, XtGrabKind);
-extern void PopdownDialog(Dialog, String *);
+extern unsigned long PopupDialog(Dialog, String, String, _XtString *, XtGrabKind);
+extern void PopdownDialog(Dialog, _XtString *);