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-rw-r--r--src/tree.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/tree.c b/src/tree.c
index 4234fc1..c1a20d0 100644
--- a/src/tree.c
+++ b/src/tree.c
@@ -383,6 +383,9 @@ zenity_tree (ZenityData *data, ZenityTreeData *tree_data)
if (data->dialog_title)
gtk_window_set_title (GTK_WINDOW (dialog), data->dialog_title);
+ if (data->modal)
+ gtk_window_set_modal (GTK_WINDOW (dialog), TRUE);
+
if (data->ok_label) {
button = GTK_WIDGET (gtk_builder_get_object (builder, "zenity_tree_ok_button"));
gtk_button_set_label (GTK_BUTTON (button), data->ok_label);