Under OS X, the Tix combobox flashes and then disappears when clicked. The small patch below fixes the issue so that the box remains visible until the combo button is released by the user:
--- /Users/kevin/Downloads/Tix8.4.3/library/ComboBox.tcl 2015-02-12 22:22:18.000000000 -0500
+++ /Users/kevin/tcl-tk-8511/Tix8.4.3/library/ComboBox.tcl 2015-02-12 23:54:37.000000000 -0500
@@ -1301,9 +1301,10 @@
set data(popped) 1
- update
- tixComboBox:Grab $w
- update
- if {[tk windowingsystem] ne "aqua"} {
- tixComboBox:Grab $w
- }
}
proc tixComboBox:SetCursor {w cursor} {