Pops up the menu or dropdown list of @combo_box, the popup window will be grabbed so only @device and its associated pointer/keyboard are the only #GdkDevices able to send events to it.
a #GdkDevice
3.0
See Implementation
Pops up the menu or dropdown list of @combo_box, the popup window will be grabbed so only @device and its associated pointer/keyboard are the only #GdkDevices able to send events to it.