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-rw-r--r--openbox/stacking.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/openbox/stacking.h b/openbox/stacking.h
index afa4a6c6..ded4644e 100644
--- a/openbox/stacking.h
+++ b/openbox/stacking.h
@@ -27,6 +27,7 @@
/*! The possible stacking layers a client window can be a part of */
typedef enum {
+ OB_STACKING_LAYER_INVALID,
OB_STACKING_LAYER_DESKTOP, /*!< 0 - desktop windows */
OB_STACKING_LAYER_BELOW, /*!< 1 - normal windows w/ below */
OB_STACKING_LAYER_NORMAL, /*!< 2 - normal windows */