Progress Bar Control

  • 项目

Progress bar controls indicate the progress of a lengthy operation such as downloading a file from the Internet. Usually the progress is expressed as a percentage from zero (0) to one hundred (100).

The window class name for a progress bar control is PROGRESS_CLASS, which is defined as "msctls_progress" in Commctrl.h.

Supported Properties and Methods

  • accHitTest
    accLocation
    accNavigate
    accSelect
    get_accChildCount
    The ChildCount property is zero.

  • get_accFocus
    get_accKeyboardShortcut
    The KeyboardShortcut property is the progress bar's access key, which is an underlined character in the text of the label for the progress bar. The returned string contains the access key character appended to the string "Alt+".

  • get_accName
    The Name property is the text from a static text control that labels the progress bar.

  • get_accParent
    The Parent property is a window (ROLE_SYSTEM_WINDOW) that surrounds the control and has the same Name property and window class name as the control.

  • get_accRole
    The Role property is ROLE_SYSTEM_PROGRESSBAR.

  • get_accState
    The State property is a combination of one or more of the following values:

    STATE_SYSTEM_INVISIBLE | STATE_SYSTEM_UNAVAILABLE | STATE_SYSTEM_FOCUSED | STATE_SYSTEM_FOCUSABLE

  • get_accValue
    The Value property is a string from "0%" to "100%" that describes the progress.

Events Generated

EVENT_OBJECT_VALUECHANGE

See Also

IAccessible Interface