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A Combobutton is a special Button that embeds a popup or menupopup child.

You could assign a label and an image to a Combobutton by the label and image properties. If both are specified, the dir property control which is displayed up front, and the orient property controls whether the layout is horizontal or vertical, the autodrop property control whether the child popup/menupopup open while mouseover and close while mouseout the right side drop down icon of Combobutton automatically.

When the user clicks the drop down icon of Combobutton, the child popup/menupopup of the Combobutton will be displayed.


  • Combobutton with Popup

ZKComRef Combobutton with Popup.jpg

	<combobutton label="popup" image="/img/network.gif">
					<textbox />
				<listbox width="200px">
						<listheader label="Name" />
						<listheader label="Description" />
						<listcell label="John" />
						<listcell label="CEO" />
						<listcell label="Joe" />
						<listcell label="Engineer" />
  • Combobutton with Menupopup

ZKComRef Combobutton with Menupopup.jpg

	<combobutton label="menu popup" image="/img/network.gif">
			<menuitem label="Index"/>
			<menu label="Menu">
					<menu label="Color Picker" content="#color=#029BCB" />
  • Combobutton as Toolbarbutton

ZKComRef Combobutton ToolbarbuttonMold.png

	<window border="normal" title="test win"
			<toolbarbutton label="Left" image="/img/network.gif" />
			<space />
			<toolbarbutton label="Right" image="/img/network.gif"
				dir="reverse" />
			<combobutton label="menu popup" image="/img/network.gif"
					<menuitem label="Index"/>
					<menu label="Menu">
							<menu label="Color Picker" content="#color=#029BCB" />



Combobutton.setAutodrop(boolean) is used to set whether the child popup should drop down automatically while mouseover the right drop down icon of Combobutton.

The simplest use is to specify it with self as follows. Then, the button is disabled when it is clicked.

<combobutton label="popup" autodrop="true" />

Moreover, it support other properties inherited from Button in stead of upload.

Supported Events

Event Type
Event: Event

Denotes when left button of Combobutton is clicked.

Event: Event

Denotes when the child popup is opened or closed, it will not be fired if open or close child popup by call Combobutton.setOpen(boolean) directly.

  • Inherited Supported Events: Button

Supported Molds

  • The default mold
  • The tbbtn mold
since 6.5.0

The tbbtn mold is renamed to toolbar mold

Supported Children

Popup Menupopup

Use Cases

Version Description Example Location
6.0.0+ Combobutton with Colorbox blog post

Version History

Last Update : 2013/3/11

Version Date Content
6.5.0 September 2012 The tbbtn mold is renamed to toolbar mold

Copyright © Potix Corporation. This article is licensed under GNU Free Documentation License.