| 摘要 |
Systems and techniques manage commands generated through user interface dialogs. In general, in one implementation, commands resulting from interaction with controls of a dialog are received, and first and second commands are distinguished. The first command is held upon receipt to be performed later, and the second command is passed through the dialog to be performed upon receipt. Both of the commands are retained in a command sequence managed by a cancel control of the dialog. The dialog can include a preview control operable to specify whether effects of interaction with the controls are to be previewed. The first command can be subject to the preview control, while the second command is not subject to the preview control. Distinguishing between the commands can involve performing the second command but not the first command when the preview control specifies the effects of interaction are not to be previewed.
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