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-rw-r--r--spectrogram.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/spectrogram.c b/spectrogram.c
index 1e05ad3..c3eed91 100644
--- a/spectrogram.c
+++ b/spectrogram.c
@@ -128,6 +128,7 @@ main(int argc, char **argv)
n = 0;
XtSetArg(args[n], XtNorientation, "horizontal"); n++;
XtSetArg(args[n], XtNaccelerators, acs); n++;
+ XtSetArg(args[n], XtNnumChannel, 2); n++;
display = XtCreateManagedWidget("Display", displayWidgetClass,
toplevel, args, n);